A user was complaining about Kleopatra crashing on Windows while being opened. This happened when he used an account on Windows whose name contains Greek letters. After he tried to start Kleopatra with an account whose name contained Latin characters the problem was gone.
System: Windows 10 Pro 64 bit
Maybe the person will enable logging and see what the cause may be. Then I will add this information in this issue.
I tried to reproduce this as we had similar problems in the past, but for me this works with full unicode characters.
But the log from the forum is interesting. It crashes when the Uiserver socket of kleopatra should be created. I just recently had a similar support case.
So I'll rename this issue because just having a special character in the account name does not do the trick but might be a hint that it could be related to some locale settings or so.