Since VSD version 3.2.0 we had several reports connected to not accessible socket files on windows.
Variants are a) "my passphrase for symmetric encryption stopped working" and b) "Kleopatra window does not come up"
In both kind of cases the problem could be solved by deleting the socket files at %LOCALAPPDATA%.
We suspect that Kleopatra was started by an admin after the update with his rights but as the target user and then not shut down fully but only closed.