Can not open Vault: WebDAV/Dokany/FUSE Problem

How did you installed Dokany? Via the exe or the msi installer?

To see if it is only Cryptomator, try the following manual:

If the above test fail and you own a github account, you can open a ticket at the Dokany issue tracker:

And for a speedy access of your vault files, consider using WinFSP: How to use it