Comodo does not work for SHA-1 and SHA-2 at the moment (all my tests
failed). It has nothing to do with a Windows update.

http://timestamp.comodoca.com
http://timestamp.comodoca.com/authenticode

Workaround (for SHA-1 and SHA-2):

http://timestamp.verisign.com/scripts/timstamp.dll
http://timestamp.globalsign.com/?signature=sha2

Friedrich