Merge branch 'develop' into feature/hub

# Conflicts:
#	.idea/runConfigurations/Cryptomator_Linux.xml
#	.idea/runConfigurations/Cryptomator_Linux_Dev.xml
#	.idea/runConfigurations/Cryptomator_Windows.xml
#	.idea/runConfigurations/Cryptomator_Windows_Dev.xml
#	.idea/runConfigurations/Cryptomator_macOS.xml
#	.idea/runConfigurations/Cryptomator_macOS_Dev.xml
#	pom.xml

src/main/java/module-info.java

@@ -56,6 +56,7 @@ module org.cryptomator.desktop {
 	opens org.cryptomator.ui.health to javafx.fxml;
 	opens org.cryptomator.ui.keyloading.hub to javafx.fxml;
 	opens org.cryptomator.ui.keyloading.masterkeyfile to javafx.fxml;
+	opens org.cryptomator.ui.lock to javafx.fxml;
 	opens org.cryptomator.ui.mainwindow to javafx.fxml;
 	opens org.cryptomator.ui.migration to javafx.fxml;
 	opens org.cryptomator.ui.preferences to javafx.fxml;

src/main/java/org/cryptomator/common/Constants.java

@@ -5,6 +5,7 @@ public interface Constants {
 	String MASTERKEY_FILENAME = "masterkey.cryptomator";
 	String MASTERKEY_BACKUP_SUFFIX = ".bkup";
 	String VAULTCONFIG_FILENAME = "vault.cryptomator";
+	String CRYPTOMATOR_FILENAME_EXT = ".cryptomator";
 	byte[] PEPPER = new byte[0];
 
 }

src/main/java/org/cryptomator/common/Environment.java

@@ -37,8 +37,10 @@ public class Environment {
 		LOG.debug("cryptomator.ipcSocketPath: {}", System.getProperty("cryptomator.ipcSocketPath"));
 		LOG.debug("cryptomator.keychainPath: {}", System.getProperty("cryptomator.keychainPath"));
 		LOG.debug("cryptomator.logDir: {}", System.getProperty("cryptomator.logDir"));
+		LOG.debug("cryptomator.pluginDir: {}", System.getProperty("cryptomator.pluginDir"));
 		LOG.debug("cryptomator.mountPointsDir: {}", System.getProperty("cryptomator.mountPointsDir"));
 		LOG.debug("cryptomator.minPwLength: {}", System.getProperty("cryptomator.minPwLength"));
+		LOG.debug("cryptomator.appVersion: {}", System.getProperty("cryptomator.appVersion"));
 		LOG.debug("cryptomator.buildNumber: {}", System.getProperty("cryptomator.buildNumber"));
 		LOG.debug("cryptomator.showTrayIcon: {}", System.getProperty("cryptomator.showTrayIcon"));
 		LOG.debug("fuse.experimental: {}", Boolean.getBoolean("fuse.experimental"));
@@ -68,10 +70,18 @@ public class Environment {
 		return getPath("cryptomator.logDir").map(this::replaceHomeDir);
 	}
 
+	public Optional<Path> getPluginDir() {
+		return getPath("cryptomator.pluginDir").map(this::replaceHomeDir);
+	}
+
 	public Optional<Path> getMountPointsDir() {
 		return getPath("cryptomator.mountPointsDir").map(this::replaceHomeDir);
 	}
 
+	public Optional<String> getAppVersion() {
+		return Optional.ofNullable(System.getProperty("cryptomator.appVersion"));
+	}
+
 	public Optional<String> getBuildNumber() {
 		return Optional.ofNullable(System.getProperty("cryptomator.buildNumber"));
 	}

src/main/java/org/cryptomator/common/ErrorCode.java

@@ -0,0 +1,142 @@
+package org.cryptomator.common;
+
+import com.google.common.base.Preconditions;
+import com.google.common.base.Strings;
+import com.google.common.base.Throwables;
+
+import java.util.Locale;
+import java.util.Objects;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
+
+/**
+ * Holds a throwable and provides a human-readable {@link #toString() three-component string representation}
+ * aiming to allow documentation and lookup of same or similar errors.
+ */
+public class ErrorCode {
+
+	private final static int A_PRIME = 31;
+	private final static int SEED = 0xdeadbeef;
+	public final static String DELIM = ":";
+
+	private final static int LATEST_FRAME = 1;
+	private final static int ALL_FRAMES = Integer.MAX_VALUE;
+
+	private final Throwable throwable;
+	private final Throwable rootCause;
+	private final int rootCauseSpecificFrames;
+
+	private ErrorCode(Throwable throwable, Throwable rootCause, int rootCauseSpecificFrames) {
+		this.throwable = Objects.requireNonNull(throwable);
+		this.rootCause = Objects.requireNonNull(rootCause);
+		this.rootCauseSpecificFrames = rootCauseSpecificFrames;
+	}
+
+	// visible for testing
+	String methodCode() {
+		return format(traceCode(rootCause, LATEST_FRAME));
+	}
+
+	// visible for testing
+	String rootCauseCode() {
+		return format(traceCode(rootCause, rootCauseSpecificFrames));
+	}
+
+	// visible for testing
+	String throwableCode() {
+		return format(traceCode(throwable, ALL_FRAMES));
+	}
+
+	/**
+	 * Produces an error code consisting of three {@value DELIM}-separated components.
+	 * <p>
+	 * A full match of the error code indicates the exact same throwable (to the extent possible
+	 * without hash collisions). A partial match of the first or second component indicates related problems
+	 * with the same root cause.
+	 *
+	 * @return A three-part error code
+	 */
+	@Override
+	public String toString() {
+		return methodCode() + DELIM + rootCauseCode() + DELIM + throwableCode();
+	}
+
+	/**
+	 * Deterministically creates an error code from the stack trace of the given <code>cause</code>.
+	 * <p>
+	 * The code consists of three parts separated by {@value DELIM}:
+	 * <ul>
+	 *     <li>The first part depends on the root cause and the method that threw it</li>
+	 *     <li>The second part depends on the root cause and its stack trace</li>
+	 *     <li>The third part depends on all the cause hierarchy</li>
+	 * </ul>
+	 * <p>
+	 * Parts may be identical if the cause is the root cause or the root cause has just one single item in its stack trace.
+	 *
+	 * @param throwable The exception
+	 * @return A three-part error code
+	 */
+	public static ErrorCode of(Throwable throwable) {
+		var causalChain = Throwables.getCausalChain(throwable);
+		if (causalChain.size() > 1) {
+			var rootCause = causalChain.get(causalChain.size() - 1);
+			var parentOfRootCause = causalChain.get(causalChain.size() - 2);
+			var rootSpecificFrames = countTopmostFrames(rootCause.getStackTrace(), parentOfRootCause.getStackTrace());
+			return new ErrorCode(throwable, rootCause, rootSpecificFrames);
+		} else {
+			return new ErrorCode(throwable, throwable, ALL_FRAMES);
+		}
+	}
+
+	private String format(int value) {
+		// Cut off highest 12 bits (only leave 20 least significant bits) and XOR rest with cutoff
+		value = (value & 0xfffff) ^ (value >>> 20);
+		return Strings.padStart(Integer.toString(value, 32).toUpperCase(Locale.ROOT), 4, '0');
+	}
+
+	private int traceCode(Throwable e, int frameCount) {
+		int result = SEED;
+		if (e.getCause() != null) {
+			result = traceCode(e.getCause(), frameCount);
+		}
+		result = result * A_PRIME + e.getClass().getName().hashCode();
+		var stack = e.getStackTrace();
+		for (int i = 0; i < Math.min(stack.length, frameCount); i++) {
+			result = result * A_PRIME + stack[i].getClassName().hashCode();
+			result = result * A_PRIME + stack[i].getMethodName().hashCode();
+		}
+		return result;
+	}
+
+	/**
+	 * Counts the number of <em>additional</em> frames contained in <code>allFrames</code> but not in <code>bottomFrames</code>.
+	 * <p>
+	 * If <code>allFrames</code> does not end with <code>bottomFrames</code>, it is considered distinct and all its frames are counted.
+	 *
+	 * @param allFrames Some stack frames
+	 * @param bottomFrames Other stack frames, potentially forming the bottom of the stack of <code>allFrames</code>
+	 * @return The number of additional frames in <code>allFrames</code>. In most cases this should be equal to the difference in size.
+	 */
+	// visible for testing
+	static int countTopmostFrames(StackTraceElement[] allFrames, StackTraceElement[] bottomFrames) {
+		if (allFrames.length < bottomFrames.length) {
+			// if frames had been stacked on top of bottomFrames, allFrames would be larger
+			return allFrames.length;
+		} else {
+			return allFrames.length - commonSuffixLength(allFrames, bottomFrames);
+		}
+	}
+
+	// visible for testing
+	static <T> int commonSuffixLength(T[] set, T[] subset) {
+		Preconditions.checkArgument(set.length >= subset.length);
+		// iterate items backwards as long as they are identical
+		var iterator = reverseStream(subset).iterator();
+		return (int) reverseStream(set).takeWhile(item -> iterator.hasNext() && iterator.next().equals(item)).count();
+	}
+
+	private static <T> Stream<T> reverseStream(T[] array) {
+		return IntStream.rangeClosed(1, array.length).mapToObj(i -> array[array.length - i]);
+	}
+
+}

src/main/java/org/cryptomator/common/PluginClassLoader.java

@@ -0,0 +1,66 @@
+package org.cryptomator.common;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.nio.file.FileVisitOption;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.ArrayList;
+import java.util.EnumSet;
+import java.util.List;
+
+@Singleton
+public class PluginClassLoader extends URLClassLoader {
+
+	private static final Logger LOG = LoggerFactory.getLogger(PluginClassLoader.class);
+	private static final String NAME = "PluginClassLoader";
+	private static final String JAR_SUFFIX = ".jar";
+
+	@Inject
+	public PluginClassLoader(Environment env) {
+		super(NAME, env.getPluginDir().map(PluginClassLoader::findJars).orElse(new URL[0]), PluginClassLoader.class.getClassLoader());
+	}
+
+	private static URL[] findJars(Path path) {
+		if (!Files.isDirectory(path)) {
+			return new URL[0];
+		} else {
+			try {
+				var visitor = new JarVisitor();
+				Files.walkFileTree(path, EnumSet.of(FileVisitOption.FOLLOW_LINKS), Integer.MAX_VALUE, visitor);
+				return visitor.urls.toArray(URL[]::new);
+			} catch (IOException e) {
+				LOG.warn("Failed to scan plugin dir " + path, e);
+				return new URL[0];
+			}
+		}
+	}
+
+	private static final class JarVisitor extends SimpleFileVisitor<Path> {
+
+		private final List<URL> urls = new ArrayList<>();
+
+		@Override
+		public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
+			if (attrs.isRegularFile() && file.getFileName().toString().toLowerCase().endsWith(JAR_SUFFIX)) {
+				try {
+					urls.add(file.toUri().toURL());
+				} catch (MalformedURLException e) {
+					LOG.warn("Failed to create URL for jar file {}", file);
+				}
+			}
+			return FileVisitResult.CONTINUE;
+		}
+	}
+
+}

src/main/java/org/cryptomator/common/keychain/KeychainManager.java

@@ -38,6 +38,11 @@ public class KeychainManager implements KeychainAccessProvider {
 		return result;
 	}
 
+	@Override
+	public String displayName() {
+		return getClass().getName();
+	}
+
 	@Override
 	public void storePassphrase(String key, CharSequence passphrase) throws KeychainAccessException {
 		getKeychainOrFail().storePassphrase(key, passphrase);

src/main/java/org/cryptomator/common/keychain/KeychainModule.java

@@ -2,6 +2,7 @@ package org.cryptomator.common.keychain;
 
 import dagger.Module;
 import dagger.Provides;
+import org.cryptomator.common.PluginClassLoader;
 import org.cryptomator.common.settings.Settings;
 import org.cryptomator.integrations.keychain.KeychainAccessProvider;
 
@@ -17,8 +18,8 @@ public class KeychainModule {
 
 	@Provides
 	@Singleton
-	static Set<ServiceLoader.Provider<KeychainAccessProvider>> provideAvailableKeychainAccessProviderFactories() {
-		return ServiceLoader.load(KeychainAccessProvider.class).stream().collect(Collectors.toUnmodifiableSet());
+	static Set<ServiceLoader.Provider<KeychainAccessProvider>> provideAvailableKeychainAccessProviderFactories(PluginClassLoader classLoader) {
+		return ServiceLoader.load(KeychainAccessProvider.class, classLoader).stream().collect(Collectors.toUnmodifiableSet());
 	}
 
 	@Provides

src/main/java/org/cryptomator/common/mountpoint/AvailableDriveLetterChooser.java

@@ -24,6 +24,6 @@ class AvailableDriveLetterChooser implements MountPointChooser {
 
 	@Override
 	public Optional<Path> chooseMountPoint(Volume caller) {
-		return this.windowsDriveLetters.getAvailableDriveLetterPath();
+		return this.windowsDriveLetters.getDesiredAvailableDriveLetterPath();
 	}
 }

src/main/java/org/cryptomator/common/settings/Settings.java

@@ -43,6 +43,8 @@ public class Settings {
 	public static final NodeOrientation DEFAULT_USER_INTERFACE_ORIENTATION = NodeOrientation.LEFT_TO_RIGHT;
 	public static final String DEFAULT_LICENSE_KEY = "";
 	public static final boolean DEFAULT_SHOW_MINIMIZE_BUTTON = false;
+	public static final String DEFAULT_DISPLAY_CONFIGURATION = "";
+
 
 	private final ObservableList<VaultSettings> directories = FXCollections.observableArrayList(VaultSettings::observables);
 	private final BooleanProperty askedForUpdateCheck = new SimpleBooleanProperty(DEFAULT_ASKED_FOR_UPDATE_CHECK);
@@ -59,6 +61,12 @@ public class Settings {
 	private final StringProperty licenseKey = new SimpleStringProperty(DEFAULT_LICENSE_KEY);
 	private final BooleanProperty showMinimizeButton = new SimpleBooleanProperty(DEFAULT_SHOW_MINIMIZE_BUTTON);
 	private final BooleanProperty showTrayIcon;
+	private final IntegerProperty windowXPosition = new SimpleIntegerProperty();
+	private final IntegerProperty windowYPosition = new SimpleIntegerProperty();
+	private final IntegerProperty windowWidth = new SimpleIntegerProperty();
+	private final IntegerProperty windowHeight = new SimpleIntegerProperty();
+	private final ObjectProperty<String> displayConfiguration = new SimpleObjectProperty<>(DEFAULT_DISPLAY_CONFIGURATION);
+
 
 	private Consumer<Settings> saveCmd;
 
@@ -83,6 +91,11 @@ public class Settings {
 		licenseKey.addListener(this::somethingChanged);
 		showMinimizeButton.addListener(this::somethingChanged);
 		showTrayIcon.addListener(this::somethingChanged);
+		windowXPosition.addListener(this::somethingChanged);
+		windowYPosition.addListener(this::somethingChanged);
+		windowWidth.addListener(this::somethingChanged);
+		windowHeight.addListener(this::somethingChanged);
+		displayConfiguration.addListener(this::somethingChanged);
 	}
 
 	void setSaveCmd(Consumer<Settings> saveCmd) {
@@ -141,7 +154,7 @@ public class Settings {
 		return theme;
 	}
 
-	public ObjectProperty<String> keychainProvider() { return keychainProvider; }
+	public ObjectProperty<String> keychainProvider() {return keychainProvider;}
 
 	public ObjectProperty<NodeOrientation> userInterfaceOrientation() {
 		return userInterfaceOrientation;
@@ -158,4 +171,24 @@ public class Settings {
 	public BooleanProperty showTrayIcon() {
 		return showTrayIcon;
 	}
+
+	public IntegerProperty windowXPositionProperty() {
+		return windowXPosition;
+	}
+
+	public IntegerProperty windowYPositionProperty() {
+		return windowYPosition;
+	}
+
+	public IntegerProperty windowWidthProperty() {
+		return windowWidth;
+	}
+
+	public IntegerProperty windowHeightProperty() {
+		return windowHeight;
+	}
+
+	public ObjectProperty<String> displayConfigurationProperty() {
+		return displayConfiguration;
+	}
 }

src/main/java/org/cryptomator/common/settings/SettingsJsonAdapter.java

@@ -52,6 +52,12 @@ public class SettingsJsonAdapter extends TypeAdapter<Settings> {
 		out.name("licenseKey").value(value.licenseKey().get());
 		out.name("showMinimizeButton").value(value.showMinimizeButton().get());
 		out.name("showTrayIcon").value(value.showTrayIcon().get());
+		out.name("windowXPosition").value((value.windowXPositionProperty().get()));
+		out.name("windowYPosition").value((value.windowYPositionProperty().get()));
+		out.name("windowWidth").value((value.windowWidthProperty().get()));
+		out.name("windowHeight").value((value.windowHeightProperty().get()));
+		out.name("displayConfiguration").value((value.displayConfigurationProperty().get()));
+
 		out.endObject();
 	}
 
@@ -86,6 +92,12 @@ public class SettingsJsonAdapter extends TypeAdapter<Settings> {
 				case "licenseKey" -> settings.licenseKey().set(in.nextString());
 				case "showMinimizeButton" -> settings.showMinimizeButton().set(in.nextBoolean());
 				case "showTrayIcon" -> settings.showTrayIcon().set(in.nextBoolean());
+				case "windowXPosition" -> settings.windowXPositionProperty().set(in.nextInt());
+				case "windowYPosition" -> settings.windowYPositionProperty().set(in.nextInt());
+				case "windowWidth" -> settings.windowWidthProperty().set(in.nextInt());
+				case "windowHeight" -> settings.windowHeightProperty().set(in.nextInt());
+				case "displayConfiguration" -> settings.displayConfigurationProperty().set(in.nextString());
+
 				default -> {
 					LOG.warn("Unsupported vault setting found in JSON: " + name);
 					in.skipValue();

src/main/java/org/cryptomator/common/vaults/Vault.java

@@ -17,9 +17,6 @@ import org.cryptomator.cryptofs.CryptoFileSystem;
 import org.cryptomator.cryptofs.CryptoFileSystemProperties;
 import org.cryptomator.cryptofs.CryptoFileSystemProperties.FileSystemFlags;
 import org.cryptomator.cryptofs.CryptoFileSystemProvider;
-import org.cryptomator.cryptofs.VaultConfig;
-import org.cryptomator.cryptofs.VaultConfig.UnverifiedVaultConfig;
-import org.cryptomator.cryptofs.VaultConfigLoadException;
 import org.cryptomator.cryptofs.common.FileSystemCapabilityChecker;
 import org.cryptomator.cryptolib.api.CryptoException;
 import org.cryptomator.cryptolib.api.MasterkeyLoader;
@@ -38,8 +35,6 @@ import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleBooleanProperty;
 import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.EnumSet;
@@ -62,6 +57,7 @@ public class Vault {
 	private final AtomicReference<CryptoFileSystem> cryptoFileSystem;
 	private final VaultState state;
 	private final ObjectProperty<Exception> lastKnownException;
+	private final VaultConfigCache configCache;
 	private final VaultStats stats;
 	private final StringBinding displayName;
 	private final StringBinding displayablePath;
@@ -78,8 +74,9 @@ public class Vault {
 	private volatile Volume volume;
 
 	@Inject
-	Vault(VaultSettings vaultSettings, Provider<Volume> volumeProvider, @DefaultMountFlags StringBinding defaultMountFlags, AtomicReference<CryptoFileSystem> cryptoFileSystem, VaultState state, @Named("lastKnownException") ObjectProperty<Exception> lastKnownException, VaultStats stats) {
+	Vault(VaultSettings vaultSettings, VaultConfigCache configCache, Provider<Volume> volumeProvider, @DefaultMountFlags StringBinding defaultMountFlags, AtomicReference<CryptoFileSystem> cryptoFileSystem, VaultState state, @Named("lastKnownException") ObjectProperty<Exception> lastKnownException, VaultStats stats) {
 		this.vaultSettings = vaultSettings;
+		this.configCache = configCache;
 		this.volumeProvider = volumeProvider;
 		this.defaultMountFlags = defaultMountFlags;
 		this.cryptoFileSystem = cryptoFileSystem;
@@ -107,10 +104,10 @@ public class Vault {
 		Set<FileSystemFlags> flags = EnumSet.noneOf(FileSystemFlags.class);
 		if (vaultSettings.usesReadOnlyMode().get()) {
 			flags.add(FileSystemFlags.READONLY);
-		} else if(vaultSettings.maxCleartextFilenameLength().get() == -1) {
+		} else if (vaultSettings.maxCleartextFilenameLength().get() == -1) {
 			LOG.debug("Determining cleartext filename length limitations...");
 			var checker = new FileSystemCapabilityChecker();
-			int shorteningThreshold = getUnverifiedVaultConfig().allegedShorteningThreshold();
+			int shorteningThreshold = configCache.get().allegedShorteningThreshold();
 			int ciphertextLimit = checker.determineSupportedCiphertextFileNameLength(getPath());
 			if (ciphertextLimit < shorteningThreshold) {
 				int cleartextLimit = checker.determineSupportedCleartextFileNameLength(getPath());
@@ -328,19 +325,6 @@ public class Vault {
 		return stats;
 	}
 
-	/**
-	 * Attempts to read the vault config file and parse it without verifying its integrity.
-	 *
-	 * @return an unverified vault config
-	 * @throws VaultConfigLoadException if the read file cannot be properly parsed
-	 * @throws IOException if reading the file fails
-	 *
-	 */
-	public UnverifiedVaultConfig getUnverifiedVaultConfig() throws IOException {
-		Path configPath = getPath().resolve(org.cryptomator.common.Constants.VAULTCONFIG_FILENAME);
-		String token = Files.readString(configPath, StandardCharsets.US_ASCII);
-		return VaultConfig.decode(token);
-	}
 
 	public Observable[] observables() {
 		return new Observable[]{state};
@@ -375,6 +359,10 @@ public class Vault {
 		}
 	}
 
+	public VaultConfigCache getVaultConfigCache() {
+		return configCache;
+	}
+
 	public void setCustomMountFlags(String mountFlags) {
 		vaultSettings.mountFlags().set(mountFlags);
 	}

src/main/java/org/cryptomator/common/vaults/VaultComponent.java

@@ -25,6 +25,9 @@ public interface VaultComponent {
 		@BindsInstance
 		Builder vaultSettings(VaultSettings vaultSettings);
 
+		@BindsInstance
+		Builder vaultConfigCache(VaultConfigCache configCache);
+
 		@BindsInstance
 		Builder initialVaultState(VaultState.Value vaultState);
 

src/main/java/org/cryptomator/common/vaults/VaultConfigCache.java

@@ -0,0 +1,65 @@
+package org.cryptomator.common.vaults;
+
+import org.cryptomator.common.Constants;
+import org.cryptomator.common.settings.VaultSettings;
+import org.cryptomator.cryptofs.VaultConfig;
+import org.cryptomator.cryptofs.VaultConfigLoadException;
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * Wrapper for lazy loading and on-demand reloading of the vault configuration.
+ */
+public class VaultConfigCache {
+
+	private final VaultSettings settings;
+	private final AtomicReference<VaultConfig.UnverifiedVaultConfig> config;
+
+	VaultConfigCache(VaultSettings settings) {
+		this.settings = settings;
+		this.config = new AtomicReference<>(null);
+	}
+
+	void reloadConfig() throws IOException {
+		try {
+			config.set(readConfigFromStorage(this.settings.path().get()));
+		} catch (IOException e) {
+			config.set(null);
+			throw e;
+		}
+	}
+
+	public VaultConfig.UnverifiedVaultConfig get() throws IOException {
+		if (config.get() == null) {
+			reloadConfig();
+		}
+		return config.get();
+	}
+
+	public VaultConfig.UnverifiedVaultConfig getUnchecked() {
+		try {
+			return get();
+		} catch (IOException e) {
+			throw new UncheckedIOException(e);
+		}
+	}
+
+
+	/**
+	 * Attempts to read the vault config file and parse it without verifying its integrity.
+	 *
+	 * @throws VaultConfigLoadException if the read file cannot be properly parsed
+	 * @throws IOException if reading the file fails
+	 */
+	static VaultConfig.UnverifiedVaultConfig readConfigFromStorage(Path vaultPath) throws IOException {
+		Path configPath = vaultPath.resolve(Constants.VAULTCONFIG_FILENAME);
+		String token = Files.readString(configPath, StandardCharsets.US_ASCII);
+		return VaultConfig.decode(token);
+	}
+
+}

src/main/java/org/cryptomator/common/vaults/VaultListManager.java

@@ -18,7 +18,6 @@ import org.slf4j.LoggerFactory;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
-import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -31,6 +30,7 @@ import java.util.ResourceBundle;
 import static org.cryptomator.common.Constants.MASTERKEY_FILENAME;
 import static org.cryptomator.common.Constants.VAULTCONFIG_FILENAME;
 import static org.cryptomator.common.vaults.VaultState.Value.ERROR;
+import static org.cryptomator.common.vaults.VaultState.Value.LOCKED;
 
 @Singleton
 public class VaultListManager {
@@ -96,6 +96,11 @@ public class VaultListManager {
 		VaultComponent.Builder compBuilder = vaultComponentBuilder.vaultSettings(vaultSettings);
 		try {
 			VaultState.Value vaultState = determineVaultState(vaultSettings.path().get());
+			VaultConfigCache wrapper = new VaultConfigCache(vaultSettings);
+			compBuilder.vaultConfigCache(wrapper); //first set the wrapper in the builder, THEN try to load config
+			if (vaultState == LOCKED) { //for legacy reasons: pre v8 vault do not have a config, but they are in the NEEDS_MIGRATION state
+				wrapper.reloadConfig();
+			}
 			compBuilder.initialVaultState(vaultState);
 		} catch (IOException e) {
 			LOG.warn("Failed to determine vault state for " + vaultSettings.path().get(), e);
@@ -112,6 +117,9 @@ public class VaultListManager {
 			case LOCKED, NEEDS_MIGRATION, MISSING -> {
 				try {
 					var determinedState = determineVaultState(vault.getPath());
+					if (determinedState == LOCKED) {
+						vault.getVaultConfigCache().reloadConfig();
+					}
 					state.set(determinedState);
 					yield determinedState;
 				} catch (IOException e) {
@@ -132,7 +140,9 @@ public class VaultListManager {
 		return switch (CryptoFileSystemProvider.checkDirStructureForVault(pathToVault, VAULTCONFIG_FILENAME, MASTERKEY_FILENAME)) {
 			case VAULT -> VaultState.Value.LOCKED;
 			case UNRELATED -> VaultState.Value.MISSING;
-			case MAYBE_LEGACY -> Migrators.get().needsMigration(pathToVault, VAULTCONFIG_FILENAME, MASTERKEY_FILENAME) ? VaultState.Value.NEEDS_MIGRATION : VaultState.Value.MISSING;
+			case MAYBE_LEGACY -> Migrators.get().needsMigration(pathToVault, VAULTCONFIG_FILENAME, MASTERKEY_FILENAME) ? //
+					VaultState.Value.NEEDS_MIGRATION //
+					: VaultState.Value.MISSING;
 		};
 	}
 

src/main/java/org/cryptomator/common/vaults/WebDavVolume.java

@@ -70,7 +70,7 @@ public class WebDavVolume implements Volume {
 		//on windows, prevent an automatic drive letter selection in the upstream library. Either we choose already a specific one or there is no free.
 		Supplier<String> driveLetterSupplier;
 		if (System.getProperty("os.name").toLowerCase().contains("windows") && vaultSettings.winDriveLetter().isEmpty().get()) {
-			driveLetterSupplier = () -> windowsDriveLetters.getAvailableDriveLetter().orElse(null);
+			driveLetterSupplier = () -> windowsDriveLetters.getDesiredAvailableDriveLetter().orElse(null);
 		} else {
 			driveLetterSupplier = () -> vaultSettings.winDriveLetter().get();
 		}

src/main/java/org/cryptomator/common/vaults/WindowsDriveLetters.java

@@ -22,11 +22,11 @@ import java.util.stream.StreamSupport;
 @Singleton
 public final class WindowsDriveLetters {
 
-	private static final Set<String> C_TO_Z;
+	private static final Set<String> A_TO_Z;
 
 	static {
-		try (IntStream stream = IntStream.rangeClosed('C', 'Z')) {
-			C_TO_Z = stream.mapToObj(i -> String.valueOf((char) i)).collect(ImmutableSet.toImmutableSet());
+		try (IntStream stream = IntStream.rangeClosed('A', 'Z')) {
+			A_TO_Z = stream.mapToObj(i -> String.valueOf((char) i)).collect(ImmutableSet.toImmutableSet());
 		}
 	}
 
@@ -35,7 +35,7 @@ public final class WindowsDriveLetters {
 	}
 
 	public Set<String> getAllDriveLetters() {
-		return C_TO_Z;
+		return A_TO_Z;
 	}
 
 	public Set<String> getOccupiedDriveLetters() {
@@ -59,6 +59,26 @@ public final class WindowsDriveLetters {
 		return getAvailableDriveLetter().map(this::toPath);
 	}
 
+	/**
+	 * Skips A and B and only returns them if all other are occupied.
+	 *
+	 * @return an Optional containing either the letter of a free drive letter or empty, if none is available
+	 */
+	public Optional<String> getDesiredAvailableDriveLetter() {
+		var availableDriveLetters = getAvailableDriveLetters();
+		var optString = availableDriveLetters.stream().filter(s -> !(s.equals("A") || s.equals("B"))).findFirst();
+		return optString.or(() -> availableDriveLetters.stream().findFirst());
+	}
+
+	/**
+	 * Skips A and B and only returns them if all other are occupied.
+	 *
+	 * @return an Optional containing either the path to a free drive letter or empty, if none is available
+	 */
+	public Optional<Path> getDesiredAvailableDriveLetterPath() {
+		return getDesiredAvailableDriveLetter().map(this::toPath);
+	}
+
 	public Path toPath(String driveLetter) {
 		return Path.of(driveLetter + ":\\");
 	}

src/main/java/org/cryptomator/ipc/IpcCommunicator.java

@@ -44,7 +44,9 @@ public interface IpcCommunicator extends Closeable {
 		}
 		// Didn't get any connection yet? I.e. we're the first app instance, so let's launch a server:
 		try {
-			return Server.create(socketPaths.iterator().next());
+			final var socketPath = socketPaths.iterator().next();
+			Files.deleteIfExists(socketPath); // ensure path does not exist before creating it
+			return Server.create(socketPath);
 		} catch (IOException e) {
 			LOG.warn("Failed to create IPC server", e);
 			return new LoopbackCommunicator();

src/main/java/org/cryptomator/ipc/Server.java

@@ -27,6 +27,7 @@ class Server implements IpcCommunicator {
 	}
 
 	public static Server create(Path socketPath) throws IOException {
+		Files.createDirectories(socketPath.getParent());
 		var address = UnixDomainSocketAddress.of(socketPath);
 		var serverSocketChannel = ServerSocketChannel.open(StandardProtocolFamily.UNIX);
 		serverSocketChannel.bind(address);

src/main/java/org/cryptomator/launcher/Cryptomator.java

@@ -38,18 +38,16 @@ public class Cryptomator {
 	private final DebugMode debugMode;
 	private final Environment env;
 	private final Lazy<IpcMessageHandler> ipcMessageHandler;
-	private final Optional<String> applicationVersion;
 	private final CountDownLatch shutdownLatch;
 	private final ShutdownHook shutdownHook;
 	private final Lazy<UiLauncher> uiLauncher;
 
 	@Inject
-	Cryptomator(LoggerConfiguration logConfig, DebugMode debugMode, Environment env, Lazy<IpcMessageHandler> ipcMessageHandler, @Named("applicationVersion") Optional<String> applicationVersion, @Named("shutdownLatch") CountDownLatch shutdownLatch, ShutdownHook shutdownHook, Lazy<UiLauncher> uiLauncher) {
+	Cryptomator(LoggerConfiguration logConfig, DebugMode debugMode, Environment env, Lazy<IpcMessageHandler> ipcMessageHandler, @Named("shutdownLatch") CountDownLatch shutdownLatch, ShutdownHook shutdownHook, Lazy<UiLauncher> uiLauncher) {
 		this.logConfig = logConfig;
 		this.debugMode = debugMode;
 		this.env = env;
 		this.ipcMessageHandler = ipcMessageHandler;
-		this.applicationVersion = applicationVersion;
 		this.shutdownLatch = shutdownLatch;
 		this.shutdownHook = shutdownHook;
 		this.uiLauncher = uiLauncher;
@@ -69,7 +67,7 @@ public class Cryptomator {
 	 */
 	private int run(String[] args) {
 		logConfig.init();
-		LOG.info("Starting Cryptomator {} on {} {} ({})", applicationVersion.orElse("SNAPSHOT"), SystemUtils.OS_NAME, SystemUtils.OS_VERSION, SystemUtils.OS_ARCH);
+		LOG.info("Starting Cryptomator {} on {} {} ({})", env.getAppVersion().orElse("SNAPSHOT"), SystemUtils.OS_NAME, SystemUtils.OS_VERSION, SystemUtils.OS_ARCH);
 		debugMode.initialize();
 
 		/*

src/main/java/org/cryptomator/launcher/CryptomatorModule.java

@@ -18,11 +18,4 @@ class CryptomatorModule {
 		return new CountDownLatch(1);
 	}
 
-	@Provides
-	@Singleton
-	@Named("applicationVersion")
-	static Optional<String> provideApplicationVersion() {
-		return Optional.ofNullable(Cryptomator.class.getPackage().getImplementationVersion());
-	}
-
 }

src/main/java/org/cryptomator/ui/addvaultwizard/ChooseExistingVaultController.java

@@ -56,11 +56,10 @@ public class ChooseExistingVaultController implements FxController {
 
 	@FXML
 	public void initialize() {
-		final String resource = SystemUtils.IS_OS_MAC ? "/img/select-masterkey-mac.png" : "/img/select-masterkey-win.png";
-		try (InputStream in = getClass().getResourceAsStream(resource)) {
-			this.screenshot = new Image(in);
-		} catch (IOException e) {
-			throw new UncheckedIOException(e);
+		if (SystemUtils.IS_OS_MAC) {
+			this.screenshot = new Image(getClass().getResource("/img/select-masterkey-mac.png").toString());
+		} else {
+			this.screenshot = new Image(getClass().getResource("/img/select-masterkey-win.png").toString());
 		}
 	}
 
@@ -73,7 +72,7 @@ public class ChooseExistingVaultController implements FxController {
 	public void chooseFileAndNext() {
 		FileChooser fileChooser = new FileChooser();
 		fileChooser.setTitle(resourceBundle.getString("addvaultwizard.existing.filePickerTitle"));
-		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("Cryptomator Masterkey", "*.cryptomator"));
+		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("Cryptomator Vault", "*.cryptomator"));
 		File masterkeyFile = fileChooser.showOpenDialog(window);
 		if (masterkeyFile != null) {
 			vaultPath.setValue(masterkeyFile.toPath().toAbsolutePath().getParent());

src/main/java/org/cryptomator/ui/addvaultwizard/CreateNewVaultLocationController.java

@@ -29,16 +29,20 @@ import javafx.scene.control.ToggleGroup;
 import javafx.stage.DirectoryChooser;
 import javafx.stage.Stage;
 import java.io.File;
+import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
 import java.util.ResourceBundle;
+import java.util.UUID;
 
 @AddVaultWizardScoped
 public class CreateNewVaultLocationController implements FxController {
 
 	private static final Logger LOG = LoggerFactory.getLogger(CreateNewVaultLocationController.class);
 	private static final Path DEFAULT_CUSTOM_VAULT_PATH = Paths.get(System.getProperty("user.home"));
+	private static final String TEMP_FILE_FORMAT = "cryptomator-%s.tmp";
 
 	private final Stage window;
 	private final Lazy<Scene> chooseNameScene;
@@ -92,7 +96,7 @@ public class CreateNewVaultLocationController implements FxController {
 			statusText.set(resourceBundle.getString("addvaultwizard.new.locationDoesNotExist"));
 			statusGraphic.set(badLocation);
 			return false;
-		} else if (!Files.isWritable(p.getParent())) {
+		} else if (!isActuallyWritable(p.getParent())) {
 			statusText.set(resourceBundle.getString("addvaultwizard.new.locationIsNotWritable"));
 			statusGraphic.set(badLocation);
 			return false;
@@ -107,6 +111,21 @@ public class CreateNewVaultLocationController implements FxController {
 		}
 	}
 
+	private boolean isActuallyWritable(Path p) {
+		Path tmpFile = p.resolve(String.format(TEMP_FILE_FORMAT, UUID.randomUUID()));
+		try (var chan = Files.newByteChannel(tmpFile, StandardOpenOption.CREATE_NEW, StandardOpenOption.WRITE, StandardOpenOption.DELETE_ON_CLOSE)) {
+			return true;
+		} catch (IOException e) {
+			return false;
+		} finally {
+			try {
+				Files.deleteIfExists(tmpFile);
+			} catch (IOException e) {
+				LOG.warn("Unable to delete temporary file {}. Needs to be deleted manually.", tmpFile);
+			}
+		}
+	}
+
 	@FXML
 	public void initialize() {
 		predefinedLocationToggler.selectedToggleProperty().addListener(this::togglePredefinedLocation);

src/main/java/org/cryptomator/ui/addvaultwizard/CreateNewVaultPasswordController.java

@@ -44,8 +44,10 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
 import java.security.SecureRandom;
+import java.util.Comparator;
 import java.util.ResourceBundle;
 import java.util.concurrent.ExecutorService;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import static java.nio.charset.StandardCharsets.US_ASCII;
 import static org.cryptomator.common.Constants.MASTERKEY_FILENAME;
@@ -195,12 +197,28 @@ public class CreateNewVaultPasswordController implements FxController {
 			} catch (CryptoException e) {
 				throw new IOException("Failed initialize vault.", e);
 			}
+		} finally {
+			AtomicBoolean cleanupFailed = new AtomicBoolean(false);
+			Files.walk(path)
+				.sorted(Comparator.reverseOrder())
+				.forEach(p -> {
+					try {
+						Files.deleteIfExists(p);
+					} catch (IOException e) {
+						cleanupFailed.set(false);
+					}
+				});
+			if(cleanupFailed.get()) {
+				LOG.warn("Failed to cleanup after failed vault creation at {}. Leftovers need to be deleted manually.", path);
+			}
 		}
 
 		// 4. write vault-external readme file:
 		String storagePathReadmeFileName = resourceBundle.getString("addvault.new.readme.storageLocation.fileName");
 		try (WritableByteChannel ch = Files.newByteChannel(path.resolve(storagePathReadmeFileName), StandardOpenOption.CREATE_NEW, StandardOpenOption.WRITE)) {
 			ch.write(US_ASCII.encode(readmeGenerator.createVaultStorageLocationReadmeRtf()));
+		} catch (IOException e) {
+			LOG.warn("Unable to create vault storage location readme.", e);
 		}
 
 		LOG.info("Created vault at {}", path);

src/main/java/org/cryptomator/ui/addvaultwizard/LocationPresets.java

@@ -14,7 +14,7 @@ public class LocationPresets {
 	private static final String USER_HOME = System.getProperty("user.home");
 	private static final String[] ICLOUDDRIVE_LOCATIONS = {"~/Library/Mobile Documents/iCloud~com~setolabs~Cryptomator/Documents", "~/iCloudDrive/iCloud~com~setolabs~Cryptomator"};
 	private static final String[] DROPBOX_LOCATIONS = {"~/Dropbox"};
-	private static final String[] GDRIVE_LOCATIONS = {"~/Google Drive"};
+	private static final String[] GDRIVE_LOCATIONS = {"~/Google Drive/My Drive", "~/Google Drive"};
 	private static final String[] ONEDRIVE_LOCATIONS = {"~/OneDrive"};
 	private static final String[] MEGA_LOCATIONS = {"~/MEGA"};
 	private static final String[] PCLOUD_LOCATIONS = {"~/pCloudDrive"};

src/main/java/org/cryptomator/ui/common/ErrorController.java

@@ -1,22 +1,47 @@
 package org.cryptomator.ui.common;
 
+import org.cryptomator.common.ErrorCode;
 import org.cryptomator.common.Nullable;
 
 import javax.inject.Inject;
 import javax.inject.Named;
+import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.beans.property.BooleanProperty;
+import javafx.beans.property.SimpleBooleanProperty;
 import javafx.fxml.FXML;
 import javafx.scene.Scene;
+import javafx.scene.input.Clipboard;
+import javafx.scene.input.ClipboardContent;
 import javafx.stage.Stage;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
 
 public class ErrorController implements FxController {
 
+	private static final String SEARCH_URL_FORMAT = "https://github.com/cryptomator/cryptomator/discussions/categories/errors?discussions_q=category:Errors+%s";
+	private static final String REPORT_URL_FORMAT = "https://github.com/cryptomator/cryptomator/discussions/new?category=Errors&title=Error+%s&body=%s";
+	private static final String SEARCH_ERRORCODE_DELIM = " OR ";
+	private static final String REPORT_BODY_TEMPLATE = """
+			<!-- ✏️ Please describe what happened as accurately as possible. -->
+			<!-- 📋 Please also copy and paste the detail text from the error window. -->
+			""";
+
+	private final Application application;
 	private final String stackTrace;
+	private final ErrorCode errorCode;
 	private final Scene previousScene;
 	private final Stage window;
 
+	private BooleanProperty copiedDetails = new SimpleBooleanProperty();
+
 	@Inject
-	ErrorController(@Named("stackTrace") String stackTrace, @Nullable Scene previousScene, Stage window) {
+	ErrorController(Application application, @Named("stackTrace") String stackTrace, ErrorCode errorCode, @Nullable Scene previousScene, Stage window) {
+		this.application = application;
 		this.stackTrace = stackTrace;
+		this.errorCode = errorCode;
 		this.previousScene = previousScene;
 		this.window = window;
 	}
@@ -33,6 +58,31 @@ public class ErrorController implements FxController {
 		window.close();
 	}
 
+	@FXML
+	public void searchError() {
+		var searchTerm = URLEncoder.encode(getErrorCode().replace(ErrorCode.DELIM, SEARCH_ERRORCODE_DELIM), StandardCharsets.UTF_8);
+		application.getHostServices().showDocument(SEARCH_URL_FORMAT.formatted(searchTerm));
+	}
+
+	@FXML
+	public void reportError() {
+		var title = URLEncoder.encode(getErrorCode(), StandardCharsets.UTF_8);
+		var body = URLEncoder.encode(REPORT_BODY_TEMPLATE, StandardCharsets.UTF_8);
+		application.getHostServices().showDocument(REPORT_URL_FORMAT.formatted(title, body));
+	}
+
+	@FXML
+	public void copyDetails() {
+		ClipboardContent clipboardContent = new ClipboardContent();
+		clipboardContent.putString(getDetailText());
+		Clipboard.getSystemClipboard().setContent(clipboardContent);
+
+		copiedDetails.set(true);
+		CompletableFuture.delayedExecutor(2, TimeUnit.SECONDS, Platform::runLater).execute(() -> {
+			copiedDetails.set(false);
+		});
+	}
+
 	/* Getter/Setter */
 
 	public boolean isPreviousScenePresent() {
@@ -42,4 +92,20 @@ public class ErrorController implements FxController {
 	public String getStackTrace() {
 		return stackTrace;
 	}
+
+	public String getErrorCode() {
+		return errorCode.toString();
+	}
+
+	public String getDetailText() {
+		return "```\nError Code " + getErrorCode() + "\n" + getStackTrace() + "\n```";
+	}
+
+	public BooleanProperty copiedDetailsProperty() {
+		return copiedDetails;
+	}
+
+	public boolean getCopiedDetails() {
+		return copiedDetails.get();
+	}
 }

src/main/java/org/cryptomator/ui/common/ErrorModule.java

@@ -4,6 +4,7 @@ import dagger.Binds;
 import dagger.Module;
 import dagger.Provides;
 import dagger.multibindings.IntoMap;
+import org.cryptomator.common.ErrorCode;
 
 import javax.inject.Named;
 import javax.inject.Provider;
@@ -31,6 +32,11 @@ abstract class ErrorModule {
 		return baos.toString(StandardCharsets.UTF_8);
 	}
 
+	@Provides
+	static ErrorCode provideErrorCode(Throwable cause) {
+		return ErrorCode.of(cause);
+	}
+
 	@Binds
 	@IntoMap
 	@FxControllerKey(ErrorController.class)

src/main/java/org/cryptomator/ui/common/FxmlFile.java

@@ -12,7 +12,6 @@ public enum FxmlFile {
 	ERROR("/fxml/error.fxml"), //
 	FORGET_PASSWORD("/fxml/forget_password.fxml"), //
 	HEALTH_START("/fxml/health_start.fxml"), //
-	HEALTH_START_FAIL("/fxml/health_start_fail.fxml"), //
 	HEALTH_CHECK_LIST("/fxml/health_check_list.fxml"), //
 	HUB_AUTH_FLOW("/fxml/hub_auth_flow.fxml"), //
 	HUB_RECEIVE_KEY("/fxml/hub_receive_key.fxml"), //

src/main/java/org/cryptomator/ui/controls/FontAwesome5Icon.java

@@ -12,6 +12,7 @@ public enum FontAwesome5Icon {
 	CARET_RIGHT("\uF0Da"), //
 	CHECK("\uF00C"), //
 	CLOCK("\uF017"), //
+	CLIPBOARD("\uF328"), //
 	COG("\uF013"), //
 	COGS("\uF085"), //
 	COPY("\uF0C5"), //

src/main/java/org/cryptomator/ui/controls/SecurePasswordField.java

@@ -10,6 +10,7 @@ package org.cryptomator.ui.controls;
 
 import com.google.common.base.Strings;
 
+import javafx.application.Platform;
 import javafx.beans.NamedArg;
 import javafx.beans.Observable;
 import javafx.beans.property.BooleanProperty;
@@ -27,7 +28,6 @@ import javafx.scene.input.KeyCodeCombination;
 import javafx.scene.input.KeyCombination;
 import javafx.scene.input.KeyEvent;
 import javafx.scene.input.TransferMode;
-import java.awt.Toolkit;
 import java.nio.CharBuffer;
 import java.text.Normalizer;
 import java.text.Normalizer.Form;
@@ -123,8 +123,7 @@ public class SecurePasswordField extends TextField {
 	}
 
 	private void updateCapsLocked() {
-		//TODO: fixed in JavaFX 17. AWT code needed until update (see https://bugs.openjdk.java.net/browse/JDK-8259680)
-		capsLocked.set(isFocused() && Toolkit.getDefaultToolkit().getLockingKeyState(java.awt.event.KeyEvent.VK_CAPS_LOCK));
+		capsLocked.set(Platform.isKeyLocked(KeyCode.CAPS).orElse(false));
 	}
 
 	private void updateContainingNonPrintableChars() {

src/main/java/org/cryptomator/ui/fxapp/UpdateChecker.java

@@ -1,5 +1,6 @@
 package org.cryptomator.ui.fxapp;
 
+import org.cryptomator.common.Environment;
 import org.cryptomator.common.settings.Settings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -31,9 +32,9 @@ public class UpdateChecker {
 	private final ScheduledService<String> updateCheckerService;
 
 	@Inject
-	UpdateChecker(Settings settings, @Named("applicationVersion") Optional<String> applicationVersion, @Named("latestVersion") StringProperty latestVersionProperty, @Named("SemVer") Comparator<String> semVerComparator, ScheduledService<String> updateCheckerService) {
+	UpdateChecker(Settings settings, Environment env, @Named("latestVersion") StringProperty latestVersionProperty, @Named("SemVer") Comparator<String> semVerComparator, ScheduledService<String> updateCheckerService) {
 		this.settings = settings;
-		this.applicationVersion = applicationVersion;
+		this.applicationVersion = env.getAppVersion();
 		this.latestVersionProperty = latestVersionProperty;
 		this.semVerComparator = semVerComparator;
 		this.updateCheckerService = updateCheckerService;

src/main/java/org/cryptomator/ui/fxapp/UpdateCheckerModule.java

@@ -3,6 +3,7 @@ package org.cryptomator.ui.fxapp;
 import dagger.Module;
 import dagger.Provides;
 import org.apache.commons.lang3.SystemUtils;
+import org.cryptomator.common.Environment;
 import org.cryptomator.common.settings.Settings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -51,9 +52,9 @@ public abstract class UpdateCheckerModule {
 
 	@Provides
 	@FxApplicationScoped
-	static HttpRequest provideCheckForUpdatesRequest(@Named("applicationVersion") Optional<String> applicationVersion) {
+	static HttpRequest provideCheckForUpdatesRequest(Environment env) {
 		String userAgent = String.format("Cryptomator VersionChecker/%s %s %s (%s)", //
-				applicationVersion.orElse("SNAPSHOT"), //
+				env.getAppVersion().orElse("SNAPSHOT"), //
 				SystemUtils.OS_NAME, //
 				SystemUtils.OS_VERSION, //
 				SystemUtils.OS_ARCH); //

src/main/java/org/cryptomator/ui/health/CheckListCellController.java

@@ -1,16 +1,14 @@
 package org.cryptomator.ui.health;
 
 import com.tobiasdiez.easybind.EasyBind;
-import com.tobiasdiez.easybind.Subscription;
 import org.cryptomator.ui.common.FxController;
 
 import javax.inject.Inject;
 import javafx.beans.binding.Binding;
+import javafx.beans.binding.Bindings;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.scene.control.CheckBox;
-import java.util.ArrayList;
-import java.util.List;
 
 public class CheckListCellController implements FxController {
 
@@ -18,26 +16,26 @@ public class CheckListCellController implements FxController {
 	private final ObjectProperty<Check> check;
 	private final Binding<String> checkName;
 	private final Binding<Boolean> checkRunnable;
-	private final List<Subscription> subscriptions;
 
 	/* FXML */
-	public CheckBox forRunSelectedCheckBox;
+	public CheckBox checkbox;
 
 	@Inject
 	public CheckListCellController() {
 		check = new SimpleObjectProperty<>();
 		checkRunnable = EasyBind.wrapNullable(check).mapObservable(Check::stateProperty).map(Check.CheckState.RUNNABLE::equals).orElse(false);
 		checkName = EasyBind.wrapNullable(check).map(Check::getName).orElse("");
-		subscriptions = new ArrayList<>();
 	}
 
 	public void initialize() {
-		subscriptions.add(EasyBind.subscribe(check, c -> {
-			forRunSelectedCheckBox.selectedProperty().unbind();
-			if (c != null) {
-				forRunSelectedCheckBox.selectedProperty().bindBidirectional(c.chosenForExecutionProperty());
+		check.addListener((observable, oldVal, newVal) -> {
+			if (oldVal != null) {
+				Bindings.unbindBidirectional(checkbox.selectedProperty(), oldVal.chosenForExecutionProperty());
 			}
-		}));
+			if (newVal != null) {
+				Bindings.bindBidirectional(checkbox.selectedProperty(), newVal.chosenForExecutionProperty());
+			}
+		});
 	}
 
 	public ObjectProperty<Check> checkProperty() {

src/main/java/org/cryptomator/ui/health/HealthCheckComponent.java

@@ -16,26 +16,15 @@ import javafx.stage.Stage;
 @Subcomponent(modules = {HealthCheckModule.class})
 public interface HealthCheckComponent {
 
-	LoadUnverifiedConfigResult loadConfig();
-
 	@HealthCheckWindow
 	Stage window();
 
 	@FxmlScene(FxmlFile.HEALTH_START)
 	Lazy<Scene> startScene();
 
-	@FxmlScene(FxmlFile.HEALTH_START_FAIL)
-	Lazy<Scene> failScene();
-
 	default Stage showHealthCheckWindow() {
 		Stage stage = window();
-		// TODO reevaluate config loading, as soon as we have the new generic error screen
-		var unverifiedConf = loadConfig();
-		if (unverifiedConf.config() != null) {
-			stage.setScene(startScene().get());
-		} else {
-			stage.setScene(failScene().get());
-		}
+		stage.setScene(startScene().get());
 		stage.show();
 		return stage;
 	}
@@ -52,5 +41,4 @@ public interface HealthCheckComponent {
 		HealthCheckComponent build();
 	}
 
-	record LoadUnverifiedConfigResult(VaultConfig.UnverifiedVaultConfig config, Throwable error) {}
 }

src/main/java/org/cryptomator/ui/health/HealthCheckModule.java

@@ -27,7 +27,6 @@ import javafx.scene.Scene;
 import javafx.stage.Modality;
 import javafx.stage.Stage;
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
@@ -37,18 +36,6 @@ import java.util.concurrent.atomic.AtomicReference;
 @Module(subcomponents = {KeyLoadingComponent.class})
 abstract class HealthCheckModule {
 
-	// TODO reevaluate config loading, as soon as we have the new generic error screen
-	@Provides
-	@HealthCheckScoped
-	static HealthCheckComponent.LoadUnverifiedConfigResult provideLoadConfigResult(@HealthCheckWindow Vault vault) {
-		try {
-			return new HealthCheckComponent.LoadUnverifiedConfigResult(vault.getUnverifiedVaultConfig(), null);
-		} catch (IOException e) {
-			return new HealthCheckComponent.LoadUnverifiedConfigResult(null, e);
-		}
-	}
-
-
 	@Provides
 	@HealthCheckScoped
 	static AtomicReference<Masterkey> provideMasterkeyRef() {
@@ -129,13 +116,6 @@ abstract class HealthCheckModule {
 		return fxmlLoaders.createScene(FxmlFile.HEALTH_START);
 	}
 
-	@Provides
-	@FxmlScene(FxmlFile.HEALTH_START_FAIL)
-	@HealthCheckScoped
-	static Scene provideHealthStartFailScene(@HealthCheckWindow FxmlLoaderFactory fxmlLoaders) {
-		return fxmlLoaders.createScene(FxmlFile.HEALTH_START_FAIL);
-	}
-
 	@Provides
 	@FxmlScene(FxmlFile.HEALTH_CHECK_LIST)
 	@HealthCheckScoped
@@ -148,11 +128,6 @@ abstract class HealthCheckModule {
 	@FxControllerKey(StartController.class)
 	abstract FxController bindStartController(StartController controller);
 
-	@Binds
-	@IntoMap
-	@FxControllerKey(StartFailController.class)
-	abstract FxController bindStartFailController(StartFailController controller);
-
 	@Binds
 	@IntoMap
 	@FxControllerKey(CheckListController.class)

src/main/java/org/cryptomator/ui/health/StartController.java

@@ -1,7 +1,8 @@
 package org.cryptomator.ui.health;
 
-import com.google.common.base.Preconditions;
 import dagger.Lazy;
+import org.cryptomator.common.vaults.Vault;
+import org.cryptomator.common.vaults.VaultConfigCache;
 import org.cryptomator.cryptofs.VaultConfig;
 import org.cryptomator.cryptofs.VaultConfigLoadException;
 import org.cryptomator.cryptofs.VaultKeyInvalidException;
@@ -18,8 +19,6 @@ import org.slf4j.LoggerFactory;
 import javax.inject.Inject;
 import javax.inject.Named;
 import javafx.application.Platform;
-import javafx.beans.property.ObjectProperty;
-import javafx.beans.property.SimpleObjectProperty;
 import javafx.fxml.FXML;
 import javafx.scene.Scene;
 import javafx.stage.Stage;
@@ -35,7 +34,7 @@ public class StartController implements FxController {
 
 	private final Stage window;
 	private final Stage unlockWindow;
-	private final ObjectProperty<VaultConfig.UnverifiedVaultConfig> unverifiedVaultConfig;
+	private final VaultConfigCache vaultConfig;
 	private final KeyLoadingStrategy keyLoadingStrategy;
 	private final ExecutorService executor;
 	private final AtomicReference<Masterkey> masterkeyRef;
@@ -44,11 +43,10 @@ public class StartController implements FxController {
 	private final Lazy<ErrorComponent.Builder> errorComponent;
 
 	@Inject
-	public StartController(@HealthCheckWindow Stage window, HealthCheckComponent.LoadUnverifiedConfigResult configLoadResult, @HealthCheckWindow KeyLoadingStrategy keyLoadingStrategy, ExecutorService executor, AtomicReference<Masterkey> masterkeyRef, AtomicReference<VaultConfig> vaultConfigRef, @FxmlScene(FxmlFile.HEALTH_CHECK_LIST) Lazy<Scene> checkScene, Lazy<ErrorComponent.Builder> errorComponent, @Named("unlockWindow") Stage unlockWindow) {
-		Preconditions.checkNotNull(configLoadResult.config());
+	public StartController(@HealthCheckWindow Stage window, @HealthCheckWindow Vault vault, @HealthCheckWindow KeyLoadingStrategy keyLoadingStrategy, ExecutorService executor, AtomicReference<Masterkey> masterkeyRef, AtomicReference<VaultConfig> vaultConfigRef, @FxmlScene(FxmlFile.HEALTH_CHECK_LIST) Lazy<Scene> checkScene, Lazy<ErrorComponent.Builder> errorComponent, @Named("unlockWindow") Stage unlockWindow) {
 		this.window = window;
 		this.unlockWindow = unlockWindow;
-		this.unverifiedVaultConfig = new SimpleObjectProperty<>(configLoadResult.config());
+		this.vaultConfig = vault.getVaultConfigCache();
 		this.keyLoadingStrategy = keyLoadingStrategy;
 		this.executor = executor;
 		this.masterkeyRef = masterkeyRef;
@@ -71,7 +69,6 @@ public class StartController implements FxController {
 
 	private void loadKey() {
 		assert !Platform.isFxApplicationThread();
-		assert unverifiedVaultConfig.get() != null;
 		try {
 			keyLoadingStrategy.use(this::verifyVaultConfig);
 		} catch (VaultConfigLoadException | UnlockCancelledException e) {
@@ -80,7 +77,7 @@ public class StartController implements FxController {
 	}
 
 	private void verifyVaultConfig(KeyLoadingStrategy keyLoadingStrategy) throws VaultConfigLoadException {
-		var unverifiedCfg = unverifiedVaultConfig.get();
+		var unverifiedCfg = vaultConfig.getUnchecked();
 		try (var masterkey = keyLoadingStrategy.loadKey(unverifiedCfg.getKeyId())) {
 			var verifiedCfg = unverifiedCfg.verify(masterkey.getEncoded(), unverifiedCfg.allegedVaultVersion());
 			vaultConfigRef.set(verifiedCfg);

src/main/java/org/cryptomator/ui/health/StartFailController.java

@@ -1,79 +0,0 @@
-package org.cryptomator.ui.health;
-
-import com.google.common.base.Preconditions;
-import org.cryptomator.cryptofs.VaultConfigLoadException;
-import org.cryptomator.ui.common.FxController;
-import org.cryptomator.ui.controls.FontAwesome5Icon;
-
-import javax.inject.Inject;
-import javafx.beans.property.ObjectProperty;
-import javafx.beans.property.SimpleObjectProperty;
-import javafx.beans.value.ObservableValue;
-import javafx.fxml.FXML;
-import javafx.scene.control.TitledPane;
-import javafx.stage.Stage;
-import java.io.ByteArrayOutputStream;
-import java.io.PrintStream;
-import java.nio.charset.StandardCharsets;
-
-// TODO reevaluate config loading, as soon as we have the new generic error screen
-@HealthCheckScoped
-public class StartFailController implements FxController {
-
-	private final Stage window;
-	private final ObjectProperty<Throwable> loadError;
-	private final ObjectProperty<FontAwesome5Icon> moreInfoIcon;
-
-	/* FXML */
-	public TitledPane moreInfoPane;
-
-	@Inject
-	public StartFailController(@HealthCheckWindow Stage window, HealthCheckComponent.LoadUnverifiedConfigResult configLoadResult) {
-		Preconditions.checkNotNull(configLoadResult.error());
-		this.window = window;
-		this.loadError = new SimpleObjectProperty<>(configLoadResult.error());
-		this.moreInfoIcon = new SimpleObjectProperty<>(FontAwesome5Icon.CARET_RIGHT);
-	}
-
-	public void initialize() {
-		moreInfoPane.expandedProperty().addListener(this::setMoreInfoIcon);
-	}
-
-	private void setMoreInfoIcon(ObservableValue<? extends Boolean> observable, boolean wasExpanded, boolean willExpand) {
-		moreInfoIcon.set(willExpand ? FontAwesome5Icon.CARET_DOWN : FontAwesome5Icon.CARET_RIGHT);
-	}
-
-	@FXML
-	public void close() {
-		window.close();
-	}
-
-	/* Getter & Setter */
-
-	public ObjectProperty<FontAwesome5Icon> moreInfoIconProperty() {
-		return moreInfoIcon;
-	}
-
-	public FontAwesome5Icon getMoreInfoIcon() {
-		return moreInfoIcon.getValue();
-	}
-
-	public String getStackTrace() {
-		ByteArrayOutputStream baos = new ByteArrayOutputStream();
-		loadError.get().printStackTrace(new PrintStream(baos));
-		return baos.toString(StandardCharsets.UTF_8);
-	}
-
-	public String getLocalizedErrorMessage() {
-		return loadError.get().getLocalizedMessage();
-	}
-
-	public boolean isParseException() {
-		return loadError.get() instanceof VaultConfigLoadException;
-	}
-
-	public boolean isIoException() {
-		return !isParseException();
-	}
-
-}

src/main/java/org/cryptomator/ui/keyloading/KeyLoadingModule.java

@@ -3,7 +3,6 @@ package org.cryptomator.ui.keyloading;
 import dagger.Module;
 import dagger.Provides;
 import org.cryptomator.common.vaults.Vault;
-import org.cryptomator.cryptofs.VaultConfig.UnverifiedVaultConfig;
 import org.cryptomator.ui.common.DefaultSceneFactory;
 import org.cryptomator.ui.common.FxController;
 import org.cryptomator.ui.common.FxmlLoaderFactory;
@@ -12,9 +11,7 @@ import org.cryptomator.ui.keyloading.masterkeyfile.MasterkeyFileLoadingModule;
 
 import javax.inject.Provider;
 import java.io.IOException;
-import java.net.URI;
 import java.util.Map;
-import java.util.Optional;
 import java.util.ResourceBundle;
 
 @Module(includes = {MasterkeyFileLoadingModule.class, HubKeyLoadingModule.class})
@@ -32,7 +29,7 @@ abstract class KeyLoadingModule {
 	@KeyLoadingScoped
 	static KeyLoadingStrategy provideKeyLoaderProvider(@KeyLoading Vault vault, Map<String, Provider<KeyLoadingStrategy>> strategies) {
 		try {
-			String scheme = vault.getUnverifiedVaultConfig().getKeyId().getScheme();
+			String scheme = vault.getVaultConfigCache().get().getKeyId().getScheme();
 			var fallback = KeyLoadingStrategy.failed(new IllegalArgumentException("Unsupported key id " + scheme));
 			return strategies.getOrDefault(scheme, () -> fallback).get();
 		} catch (IOException e) {

src/main/java/org/cryptomator/ui/keyloading/KeyLoadingStrategy.java

@@ -77,6 +77,7 @@ public interface KeyLoadingStrategy extends MasterkeyLoader {
 		boolean success = false;
 		try {
 			user.use(this);
+			success = true;
 		} catch (MasterkeyLoadingFailedException e) {
 			if (recoverFromException(e)) {
 				LOG.info("Unlock attempt threw {}. Reattempting...", e.getClass().getSimpleName());

src/main/java/org/cryptomator/ui/keyloading/hub/HubKeyLoadingModule.java

@@ -40,7 +40,7 @@ public abstract class HubKeyLoadingModule {
 	@KeyLoadingScoped
 	static HubConfig provideHubConfig(@KeyLoading Vault vault) {
 		try {
-			return vault.getUnverifiedVaultConfig().getHeader("hub", HubConfig.class);
+			return vault.getVaultConfigCache().get().getHeader("hub", HubConfig.class);
 		} catch (IOException e) {
 			throw new UncheckedIOException(e);
 		}

src/main/java/org/cryptomator/ui/keyloading/hub/ReceiveKeyController.java

@@ -150,7 +150,7 @@ public class ReceiveKeyController implements FxController {
 
 	private static URI getVaultBaseUri(Vault vault) {
 		try {
-			var kid = vault.getUnverifiedVaultConfig().getKeyId();
+			var kid = vault.getVaultConfigCache().get().getKeyId();
 			assert kid.getScheme().startsWith(SCHEME_PREFIX);
 			var hubUriScheme = kid.getScheme().substring(SCHEME_PREFIX.length());
 			return new URI(hubUriScheme, kid.getSchemeSpecificPart(), kid.getFragment());

src/main/java/org/cryptomator/ui/launcher/AppLaunchEventHandler.java

@@ -11,12 +11,11 @@ import javax.inject.Named;
 import javax.inject.Singleton;
 import javafx.application.Platform;
 import java.io.IOException;
-import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ExecutorService;
 
-import static org.cryptomator.common.Constants.MASTERKEY_FILENAME;
+import static org.cryptomator.common.Constants.CRYPTOMATOR_FILENAME_EXT;
 
 @Singleton
 class AppLaunchEventHandler {
@@ -69,7 +68,7 @@ class AppLaunchEventHandler {
 		assert Platform.isFxApplicationThread();
 		try {
 			final Vault v;
-			if (potentialVaultPath.getFileName().toString().equals(MASTERKEY_FILENAME)) {
+			if (potentialVaultPath.getFileName().toString().endsWith(CRYPTOMATOR_FILENAME_EXT)) {
 				v = vaultListManager.add(potentialVaultPath.getParent());
 			} else {
 				v = vaultListManager.add(potentialVaultPath);

src/main/java/org/cryptomator/ui/launcher/UiLauncherModule.java

@@ -2,6 +2,7 @@ package org.cryptomator.ui.launcher;
 
 import dagger.Module;
 import dagger.Provides;
+import org.cryptomator.common.PluginClassLoader;
 import org.cryptomator.integrations.autostart.AutoStartProvider;
 import org.cryptomator.integrations.tray.TrayIntegrationProvider;
 import org.cryptomator.integrations.uiappearance.UiAppearanceProvider;
@@ -33,21 +34,21 @@ public abstract class UiLauncherModule {
 
 	@Provides
 	@Singleton
-	static Optional<UiAppearanceProvider> provideAppearanceProvider() {
-		return ServiceLoader.load(UiAppearanceProvider.class).findFirst();
+	static Optional<UiAppearanceProvider> provideAppearanceProvider(PluginClassLoader classLoader) {
+		return ServiceLoader.load(UiAppearanceProvider.class, classLoader).findFirst();
 	}
 
 	@Provides
 	@Singleton
-	static Optional<AutoStartProvider> provideAutostartProvider() {
-		return ServiceLoader.load(AutoStartProvider.class).findFirst();
+	static Optional<AutoStartProvider> provideAutostartProvider(PluginClassLoader classLoader) {
+		return ServiceLoader.load(AutoStartProvider.class, classLoader).findFirst();
 	}
 
 
 	@Provides
 	@Singleton
-	static Optional<TrayIntegrationProvider> provideTrayIntegrationProvider() {
-		return ServiceLoader.load(TrayIntegrationProvider.class).findFirst();
+	static Optional<TrayIntegrationProvider> provideTrayIntegrationProvider(PluginClassLoader classLoader) {
+		return ServiceLoader.load(TrayIntegrationProvider.class, classLoader).findFirst();
 	}
 
 	@Provides

src/main/java/org/cryptomator/ui/mainwindow/MainWindowController.java

@@ -23,12 +23,11 @@ import javafx.scene.layout.StackPane;
 import javafx.stage.Stage;
 import java.io.File;
 import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.util.Set;
 import java.util.stream.Collectors;
 
+import static org.cryptomator.common.Constants.CRYPTOMATOR_FILENAME_EXT;
 import static org.cryptomator.common.Constants.MASTERKEY_FILENAME;
 import static org.cryptomator.common.Constants.VAULTCONFIG_FILENAME;
 
@@ -55,7 +54,7 @@ public class MainWindowController implements FxController {
 
 	@FXML
 	public void initialize() {
-		LOG.debug("init MainWindowController");
+		LOG.trace("init MainWindowController");
 		root.setOnDragEntered(this::handleDragEvent);
 		root.setOnDragOver(this::handleDragEvent);
 		root.setOnDragDropped(this::handleDragEvent);
@@ -96,6 +95,9 @@ public class MainWindowController implements FxController {
 
 	private boolean containsVault(Path path) {
 		try {
+			if (path.getFileName().toString().endsWith(CRYPTOMATOR_FILENAME_EXT)) {
+				path = path.getParent();
+			}
 			return CryptoFileSystemProvider.checkDirStructureForVault(path, VAULTCONFIG_FILENAME, MASTERKEY_FILENAME) != DirStructure.UNRELATED;
 		} catch (IOException e) {
 			return false;
@@ -104,7 +106,7 @@ public class MainWindowController implements FxController {
 
 	private void addVault(Path pathToVault) {
 		try {
-			if (pathToVault.getFileName().toString().equals(VAULTCONFIG_FILENAME)) {
+			if (pathToVault.getFileName().toString().endsWith(CRYPTOMATOR_FILENAME_EXT)) {
 				vaultListManager.add(pathToVault.getParent());
 			} else {
 				vaultListManager.add(pathToVault);

src/main/java/org/cryptomator/ui/mainwindow/MainWindowModule.java

@@ -6,29 +6,32 @@ import dagger.Provides;
 import dagger.multibindings.IntoMap;
 import org.cryptomator.common.vaults.Vault;
 import org.cryptomator.ui.addvaultwizard.AddVaultWizardComponent;
-import org.cryptomator.ui.common.FxmlLoaderFactory;
+import org.cryptomator.ui.common.ErrorComponent;
 import org.cryptomator.ui.common.FxController;
 import org.cryptomator.ui.common.FxControllerKey;
 import org.cryptomator.ui.common.FxmlFile;
+import org.cryptomator.ui.common.FxmlLoaderFactory;
 import org.cryptomator.ui.common.FxmlScene;
 import org.cryptomator.ui.common.StageFactory;
 import org.cryptomator.ui.health.HealthCheckComponent;
 import org.cryptomator.ui.migration.MigrationComponent;
 import org.cryptomator.ui.removevault.RemoveVaultComponent;
-import org.cryptomator.ui.vaultoptions.VaultOptionsComponent;
 import org.cryptomator.ui.stats.VaultStatisticsComponent;
+import org.cryptomator.ui.vaultoptions.VaultOptionsComponent;
 import org.cryptomator.ui.wrongfilealert.WrongFileAlertComponent;
 
+import javax.inject.Named;
 import javax.inject.Provider;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.scene.Scene;
+import javafx.stage.Modality;
 import javafx.stage.Stage;
 import javafx.stage.StageStyle;
 import java.util.Map;
 import java.util.ResourceBundle;
 
-@Module(subcomponents = {AddVaultWizardComponent.class, HealthCheckComponent.class, MigrationComponent.class, RemoveVaultComponent.class, VaultOptionsComponent.class, VaultStatisticsComponent.class, WrongFileAlertComponent.class})
+@Module(subcomponents = {AddVaultWizardComponent.class, HealthCheckComponent.class, MigrationComponent.class, RemoveVaultComponent.class, VaultOptionsComponent.class, VaultStatisticsComponent.class, WrongFileAlertComponent.class, ErrorComponent.class})
 abstract class MainWindowModule {
 
 	@Provides
@@ -49,15 +52,23 @@ abstract class MainWindowModule {
 	@MainWindowScoped
 	static Stage provideStage(StageFactory factory) {
 		Stage stage = factory.create(StageStyle.UNDECORATED);
-		// TODO: min/max values chosen arbitrarily. We might wanna take a look at the user's resolution...
 		stage.setMinWidth(650);
 		stage.setMinHeight(440);
-		stage.setMaxWidth(1000);
-		stage.setMaxHeight(700);
 		stage.setTitle("Cryptomator");
 		return stage;
 	}
 
+	@Provides
+	@MainWindowScoped
+	@Named("errorWindow")
+	static Stage provideErrorStage(@MainWindow Stage window, StageFactory factory, ResourceBundle resourceBundle) {
+		Stage stage = factory.create(StageStyle.DECORATED);
+		stage.setTitle(resourceBundle.getString("main.vaultDetail.error.windowTitle"));
+		stage.initModality(Modality.APPLICATION_MODAL);
+		stage.initOwner(window);
+		return stage;
+	}
+
 	@Provides
 	@FxmlScene(FxmlFile.MAIN_WINDOW)
 	@MainWindowScoped

src/main/java/org/cryptomator/ui/mainwindow/MainWindowTitleController.java

@@ -16,6 +16,7 @@ import javafx.beans.binding.Bindings;
 import javafx.beans.binding.BooleanBinding;
 import javafx.beans.property.ReadOnlyBooleanProperty;
 import javafx.fxml.FXML;
+import javafx.scene.input.MouseButton;
 import javafx.scene.layout.HBox;
 import javafx.stage.Stage;
 
@@ -53,22 +54,43 @@ public class MainWindowTitleController implements FxController {
 
 	@FXML
 	public void initialize() {
-		LOG.debug("init MainWindowTitleController");
+		LOG.trace("init MainWindowTitleController");
 		updateChecker.automaticallyCheckForUpdatesIfEnabled();
 		titleBar.setOnMousePressed(event -> {
 			xOffset = event.getSceneX();
 			yOffset = event.getSceneY();
+
+		});
+		titleBar.setOnMouseClicked(event -> {
+			if (event.getButton().equals(MouseButton.PRIMARY) && event.getClickCount() == 2) {
+				window.setFullScreen(!window.isFullScreen());
+			}
 		});
 		titleBar.setOnMouseDragged(event -> {
+			if (window.isFullScreen()) return;
 			window.setX(event.getScreenX() - xOffset);
 			window.setY(event.getScreenY() - yOffset);
 		});
+		titleBar.setOnDragDetected(mouseDragEvent -> {
+			titleBar.startFullDrag();
+		});
+		titleBar.setOnMouseDragReleased(mouseDragEvent -> {
+			saveWindowSettings();
+		});
+
 		window.setOnCloseRequest(event -> {
 			close();
 			event.consume();
 		});
 	}
 
+	private void saveWindowSettings() {
+		settings.windowYPositionProperty().setValue(window.getY());
+		settings.windowXPositionProperty().setValue(window.getX());
+		settings.windowWidthProperty().setValue(window.getWidth());
+		settings.windowHeightProperty().setValue(window.getHeight());
+	}
+
 	@FXML
 	public void close() {
 		if (trayMenuInitialized) {

src/main/java/org/cryptomator/ui/mainwindow/ResizeController.java

@@ -1,41 +1,100 @@
 package org.cryptomator.ui.mainwindow;
 
+import org.cryptomator.common.settings.Settings;
 import org.cryptomator.ui.common.FxController;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.inject.Inject;
+import javafx.beans.binding.Bindings;
+import javafx.beans.binding.BooleanBinding;
+import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
+import javafx.geometry.Rectangle2D;
 import javafx.scene.input.MouseEvent;
 import javafx.scene.layout.Region;
+import javafx.stage.Screen;
 import javafx.stage.Stage;
 
 @MainWindow
 public class ResizeController implements FxController {
 
+	private static final Logger LOG = LoggerFactory.getLogger(ResizeController.class);
+
 	private final Stage window;
 
 	public Region tlResizer;
 	public Region trResizer;
 	public Region blResizer;
 	public Region brResizer;
+	public Region tResizer;
+	public Region rResizer;
+	public Region bResizer;
+	public Region lResizer;
+	public Region lDefaultRegion;
+	public Region tDefaultRegion;
+	public Region rDefaultRegion;
+	public Region bDefaultRegion;
 
 	private double origX, origY, origW, origH;
 
+	private final Settings settings;
+
+	private final BooleanBinding showResizingArrows;
+
 	@Inject
-	ResizeController(@MainWindow Stage window) {
+	ResizeController(@MainWindow Stage window, Settings settings) {
 		this.window = window;
-		// TODO inject settings and save current position and size
+		this.settings = settings;
+		this.showResizingArrows = Bindings.createBooleanBinding(this::isShowResizingArrows, window.fullScreenProperty());
 	}
 
 	@FXML
 	public void initialize() {
-		tlResizer.setOnMousePressed(this::startResize);
-		trResizer.setOnMousePressed(this::startResize);
-		blResizer.setOnMousePressed(this::startResize);
-		brResizer.setOnMousePressed(this::startResize);
-		tlResizer.setOnMouseDragged(this::resizeTopLeft);
-		trResizer.setOnMouseDragged(this::resizeTopRight);
-		blResizer.setOnMouseDragged(this::resizeBottomLeft);
-		brResizer.setOnMouseDragged(this::resizeBottomRight);
+		LOG.trace("init ResizeController");
+
+		if (neverTouched()) {
+			settings.displayConfigurationProperty().setValue(getMonitorSizes());
+			return;
+		} else {
+			if (didDisplayConfigurationChange()) {
+				//If the position is illegal, then the window appears on the main screen in the middle of the window.
+				Rectangle2D primaryScreenBounds = Screen.getPrimary().getBounds();
+				window.setX((primaryScreenBounds.getWidth() - window.getMinWidth()) / 2);
+				window.setY((primaryScreenBounds.getHeight() - window.getMinHeight()) / 2);
+				window.setWidth(window.getMinWidth());
+				window.setHeight(window.getMinHeight());
+			} else {
+				window.setHeight(settings.windowHeightProperty().get() > window.getMinHeight() ? settings.windowHeightProperty().get() : window.getMinHeight());
+				window.setWidth(settings.windowWidthProperty().get() > window.getMinWidth() ? settings.windowWidthProperty().get() : window.getMinWidth());
+				window.setX(settings.windowXPositionProperty().get());
+				window.setY(settings.windowYPositionProperty().get());
+			}
+		}
+		savePositionalSettings();
+	}
+
+	private boolean neverTouched() {
+		return (settings.windowHeightProperty().get() == 0) && (settings.windowWidthProperty().get() == 0) && (settings.windowXPositionProperty().get() == 0) && (settings.windowYPositionProperty().get() == 0);
+	}
+
+	private boolean didDisplayConfigurationChange() {
+		String currentDisplayConfiguration = getMonitorSizes();
+		String settingsDisplayConfiguration = settings.displayConfigurationProperty().get();
+		boolean configurationHasChanged = !settingsDisplayConfiguration.equals(currentDisplayConfiguration);
+		if (configurationHasChanged) settings.displayConfigurationProperty().setValue(currentDisplayConfiguration);
+		return configurationHasChanged;
+	}
+
+	private String getMonitorSizes() {
+		ObservableList<Screen> screens = Screen.getScreens();
+		StringBuilder sb = new StringBuilder();
+		for (int i = 0; i < screens.size(); i++) {
+			Rectangle2D screenBounds = screens.get(i).getBounds();
+			if (!sb.isEmpty()) sb.append(" ");
+			sb.append("displayId: " + i + ", " + screenBounds.getWidth() + "x" + screenBounds.getHeight() + ";");
+		}
+		return sb.toString();
 	}
 
 	private void startResize(MouseEvent evt) {
@@ -45,27 +104,33 @@ public class ResizeController implements FxController {
 		origH = window.getHeight();
 	}
 
+	@FXML
 	private void resizeTopLeft(MouseEvent evt) {
 		resizeTop(evt);
 		resizeLeft(evt);
 	}
 
+	@FXML
 	private void resizeTopRight(MouseEvent evt) {
 		resizeTop(evt);
 		resizeRight(evt);
 	}
 
+	@FXML
 	private void resizeBottomLeft(MouseEvent evt) {
 		resizeBottom(evt);
 		resizeLeft(evt);
 	}
 
+	@FXML
 	private void resizeBottomRight(MouseEvent evt) {
 		resizeBottom(evt);
 		resizeRight(evt);
 	}
 
+	@FXML
 	private void resizeTop(MouseEvent evt) {
+		startResize(evt);
 		double newY = evt.getScreenY();
 		double dy = newY - origY;
 		double newH = origH - dy;
@@ -75,7 +140,9 @@ public class ResizeController implements FxController {
 		}
 	}
 
+	@FXML
 	private void resizeLeft(MouseEvent evt) {
+		startResize(evt);
 		double newX = evt.getScreenX();
 		double dx = newX - origX;
 		double newW = origW - dx;
@@ -85,6 +152,7 @@ public class ResizeController implements FxController {
 		}
 	}
 
+	@FXML
 	private void resizeBottom(MouseEvent evt) {
 		double newH = evt.getSceneY();
 		if (newH < window.getMaxHeight() && newH > window.getMinHeight()) {
@@ -92,6 +160,7 @@ public class ResizeController implements FxController {
 		}
 	}
 
+	@FXML
 	private void resizeRight(MouseEvent evt) {
 		double newW = evt.getSceneX();
 		if (newW < window.getMaxWidth() && newW > window.getMinWidth()) {
@@ -99,4 +168,21 @@ public class ResizeController implements FxController {
 		}
 	}
 
-}
+	@FXML
+	public void savePositionalSettings() {
+		settings.windowHeightProperty().setValue(window.getHeight());
+		settings.windowWidthProperty().setValue(window.getWidth());
+		settings.windowYPositionProperty().setValue(window.getY());
+		settings.windowXPositionProperty().setValue(window.getX());
+	}
+
+	public BooleanBinding showResizingArrowsProperty() {
+		return showResizingArrows;
+	}
+
+	public boolean isShowResizingArrows() {
+		//If in fullscreen resizing is not be possible;
+		return !window.isFullScreen();
+	}
+
+}

src/main/java/org/cryptomator/ui/mainwindow/VaultDetailUnknownErrorController.java

@@ -2,45 +2,46 @@ package org.cryptomator.ui.mainwindow;
 
 import com.tobiasdiez.easybind.EasyBind;
 import org.cryptomator.common.vaults.Vault;
+import org.cryptomator.common.vaults.VaultListManager;
+import org.cryptomator.ui.common.ErrorComponent;
 import org.cryptomator.ui.common.FxController;
+import org.cryptomator.ui.removevault.RemoveVaultComponent;
 
 import javax.inject.Inject;
+import javax.inject.Named;
 import javafx.beans.binding.Binding;
 import javafx.beans.property.ObjectProperty;
-import java.io.ByteArrayOutputStream;
-import java.io.PrintStream;
-import java.nio.charset.StandardCharsets;
+import javafx.fxml.FXML;
+import javafx.stage.Stage;
 
 @MainWindowScoped
 public class VaultDetailUnknownErrorController implements FxController {
 
-	private final Binding<String> stackTrace;
+	private final ObjectProperty<Vault> vault;
+	private final ErrorComponent.Builder errorComponentBuilder;
+	private final Stage errorWindow;
+	private final RemoveVaultComponent.Builder removeVault;
 
 	@Inject
-	public VaultDetailUnknownErrorController(ObjectProperty<Vault> vault) {
-		this.stackTrace = EasyBind.select(vault) //
-				.selectObject(Vault::lastKnownExceptionProperty) //
-				.map(this::provideStackTrace);
+	public VaultDetailUnknownErrorController(ObjectProperty<Vault> vault, ErrorComponent.Builder errorComponentBuilder, @Named("errorWindow") Stage errorWindow, RemoveVaultComponent.Builder removeVault) {
+		this.vault = vault;
+		this.errorComponentBuilder = errorComponentBuilder;
+		this.errorWindow = errorWindow;
+		this.removeVault = removeVault;
 	}
 
-	private String provideStackTrace(Throwable cause) {
-		// TODO deduplicate ErrorModule.java
-		if (cause != null) {
-			ByteArrayOutputStream baos = new ByteArrayOutputStream();
-			cause.printStackTrace(new PrintStream(baos));
-			return baos.toString(StandardCharsets.UTF_8);
-		} else {
-			return "";
-		}
+	@FXML
+	public void showError() {
+		errorComponentBuilder.window(errorWindow).cause(vault.get().getLastKnownException()).build().showErrorScene();
 	}
 
-	/* Getter/Setter */
-
-	public Binding<String> stackTraceProperty() {
-		return stackTrace;
+	@FXML
+	public void reload() {
+		VaultListManager.redetermineVaultState(vault.get());
 	}
 
-	public String getStackTrace() {
-		return stackTrace.getValue();
+	@FXML
+	void didClickRemoveVault() {
+		removeVault.vault(vault.get()).build().showRemoveVault();
 	}
 }

src/main/java/org/cryptomator/ui/preferences/PreferencesModule.java

@@ -42,7 +42,6 @@ abstract class PreferencesModule {
 	static Stage provideStage(StageFactory factory, ResourceBundle resourceBundle) {
 		Stage stage = factory.create();
 		stage.setTitle(resourceBundle.getString("preferences.title"));
-		stage.setResizable(false);
 		return stage;
 	}
 

src/main/java/org/cryptomator/ui/traymenu/TrayIconController.java

@@ -2,9 +2,6 @@ package org.cryptomator.ui.traymenu;
 
 import com.google.common.base.Preconditions;
 import org.apache.commons.lang3.SystemUtils;
-import org.cryptomator.integrations.uiappearance.Theme;
-import org.cryptomator.integrations.uiappearance.UiAppearanceException;
-import org.cryptomator.integrations.uiappearance.UiAppearanceProvider;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -12,38 +9,25 @@ import javax.inject.Inject;
 import java.awt.AWTException;
 import java.awt.SystemTray;
 import java.awt.TrayIcon;
-import java.util.Optional;
 
 @TrayMenuScoped
 public class TrayIconController {
 
 	private static final Logger LOG = LoggerFactory.getLogger(TrayIconController.class);
 
-	private final TrayImageFactory imageFactory;
-	private final Optional<UiAppearanceProvider> appearanceProvider;
 	private final TrayMenuController trayMenuController;
 	private final TrayIcon trayIcon;
 	private volatile boolean initialized;
 
 	@Inject
-	TrayIconController(TrayImageFactory imageFactory, TrayMenuController trayMenuController, Optional<UiAppearanceProvider> appearanceProvider) {
+	TrayIconController(TrayImageFactory imageFactory, TrayMenuController trayMenuController) {
 		this.trayMenuController = trayMenuController;
-		this.imageFactory = imageFactory;
-		this.appearanceProvider = appearanceProvider;
 		this.trayIcon = new TrayIcon(imageFactory.loadImage(), "Cryptomator", trayMenuController.getMenu());
 	}
 
 	public synchronized void initializeTrayIcon() throws IllegalStateException {
 		Preconditions.checkState(!initialized);
 
-		appearanceProvider.ifPresent(appearanceProvider -> {
-			try {
-				appearanceProvider.addListener(this::systemInterfaceThemeChanged);
-			} catch (UiAppearanceException e) {
-				LOG.error("Failed to enable automatic tray icon theme switching.");
-			}
-		});
-
 		trayIcon.setImageAutoSize(true);
 		if (SystemUtils.IS_OS_WINDOWS) {
 			trayIcon.addActionListener(trayMenuController::showMainWindow);
@@ -61,10 +45,6 @@ public class TrayIconController {
 		this.initialized = true;
 	}
 
-	private void systemInterfaceThemeChanged(Theme theme) {
-		trayIcon.setImage(imageFactory.loadImage()); // TODO refactor "theme" is re-queried in loadImage()
-	}
-
 	public boolean isInitialized() {
 		return initialized;
 	}

src/main/java/org/cryptomator/ui/traymenu/TrayImageFactory.java

@@ -25,11 +25,7 @@ class TrayImageFactory {
 	}
 
 	private String getMacResourceName() {
-		var theme = appearanceProvider.map(UiAppearanceProvider::getSystemTheme).orElse(Theme.LIGHT);
-		return switch (theme) {
-			case DARK -> "/img/tray_icon_mac_white.png";
-			case LIGHT -> "/img/tray_icon_mac_black.png";
-		};
+		return "/img/tray_icon_mac.png";
 	}
 
 	private String getWinOrLinuxResourceName() {

src/main/java/org/cryptomator/ui/vaultoptions/MountOptionsController.java

@@ -27,6 +27,7 @@ import javafx.stage.DirectoryChooser;
 import javafx.stage.Stage;
 import javafx.util.StringConverter;
 import java.io.File;
+import java.nio.file.InvalidPathException;
 import java.nio.file.Path;
 import java.util.ResourceBundle;
 import java.util.Set;
@@ -94,7 +95,9 @@ public class MountOptionsController implements FxController {
 		driveLetterSelection.setConverter(new WinDriveLetterLabelConverter(windowsDriveLetters, resourceBundle));
 		driveLetterSelection.setValue(vault.getVaultSettings().winDriveLetter().get());
 
-		if (vault.getVaultSettings().useCustomMountPath().get() && !getRestrictToStableFuseOnWindows() /* to prevent invalid states */) {
+		if (vault.getVaultSettings().useCustomMountPath().get()
+				&& vault.getVaultSettings().getCustomMountPath().isPresent()
+				&& !getRestrictToStableFuseOnWindows() /* to prevent invalid states */) {
 			mountPoint.selectToggle(mountPointCustomDir);
 		} else if (!Strings.isNullOrEmpty(vault.getVaultSettings().winDriveLetter().get())) {
 			mountPoint.selectToggle(mountPointWinDriveLetter);
@@ -125,25 +128,30 @@ public class MountOptionsController implements FxController {
 	}
 
 	@FXML
-	private void chooseCustomMountPoint() {
+	public void chooseCustomMountPoint() {
+		chooseCustomMountPointOrReset(mountPointCustomDir);
+	}
+
+	private void chooseCustomMountPointOrReset(Toggle previousMountToggle) {
 		DirectoryChooser directoryChooser = new DirectoryChooser();
 		directoryChooser.setTitle(resourceBundle.getString("vaultOptions.mount.mountPoint.directoryPickerTitle"));
 		try {
-			directoryChooser.setInitialDirectory(Path.of(System.getProperty("user.home")).toFile());
-		} catch (Exception e) {
-			//NO-OP
+			var initialDir = vault.getVaultSettings().getCustomMountPath().orElse(System.getProperty("user.home"));
+			directoryChooser.setInitialDirectory(Path.of(initialDir).toFile());
+		} catch (InvalidPathException e) {
+			// no-op
 		}
 		File file = directoryChooser.showDialog(window);
 		if (file != null) {
 			vault.getVaultSettings().customMountPath().set(file.getAbsolutePath());
 		} else {
-			vault.getVaultSettings().customMountPath().set(null);
+			mountPoint.selectToggle(previousMountToggle);
 		}
 	}
 
-	private void toggleMountPoint(@SuppressWarnings("unused") ObservableValue<? extends Toggle> observable, @SuppressWarnings("unused") Toggle oldValue, Toggle newValue) {
+	private void toggleMountPoint(@SuppressWarnings("unused") ObservableValue<? extends Toggle> observable, Toggle oldValue, Toggle newValue) {
 		if (mountPointCustomDir.equals(newValue) && Strings.isNullOrEmpty(vault.getVaultSettings().customMountPath().get())) {
-			chooseCustomMountPoint();
+			chooseCustomMountPointOrReset(oldValue);
 		}
 	}
 

src/main/java/org/cryptomator/ui/vaultoptions/SelectedVaultOptionsTab.java

@@ -21,8 +21,4 @@ public enum SelectedVaultOptionsTab {
 	 */
 	KEY,
 
-	/**
-	 * Show Auto-Lock tab
-	 */
-	AUTOLOCK,
 }

src/main/java/org/cryptomator/ui/vaultoptions/VaultOptionsController.java

@@ -23,7 +23,6 @@ public class VaultOptionsController implements FxController {
 	public Tab generalTab;
 	public Tab mountTab;
 	public Tab keyTab;
-	public Tab autoLockTab;
 
 	@Inject
 	VaultOptionsController(@VaultOptionsWindow Stage window, ObjectProperty<SelectedVaultOptionsTab> selectedTabProperty) {
@@ -48,7 +47,6 @@ public class VaultOptionsController implements FxController {
 			case ANY, GENERAL -> generalTab;
 			case MOUNT -> mountTab;
 			case KEY -> keyTab;
-			case AUTOLOCK ->  autoLockTab;
 		};
 	}