Microsoft’s November patches were applied to my Win 10 Pro system over night. Today, attempting to send signed mail with Enigmail stalls. Kleopatra Version 3.0.0-gpg4win-3.0.0 stalls with “loading certificate cache.”
I have not attempted very much debugging because I must teach a class on cryptography (!) shortly. I wonder whether anyone else has seen this problem and whether there is a fix for it?
This appears to be a false alarm, for which I apologize. The Windows update failed and left a bunch of things broken. I still do not have it completely fixed, but GPG4Win appears OK.
Hi Bob,
thanks for your feedback and for using Gpg4win!
There certainly is the possibility that updates for windows, outlook
or other related components may break Gpg4win once in a while,
so it is fine that you’ve asked.
And it is good to know that it is not the case this time. 
Best Regards,
Bernhard