A \\server\share -dir was passed to WinFsp as a plain mount point, which
treats it as a directory path on an actual remote server and fails. Turn it
into the VolumePrefix option instead, so the mount registers with the WinFsp
network provider: the UNC path is then reachable from every logon session,
which a drive letter mounted from a service is not, and each user can map
their own drive letter to it.
Chris LuandGitHub
68f0793b6f