http://bugs.winehq.org/show_bug.cgi?id=20653
--- Comment #14 from Juan Lang juan_lang@yahoo.com 2009-11-15 19:08:40 --- (In reply to comment #13)
What do we do with it Juan?
I don't know. I'm certain the patch caused the regression, and I'm equally certain that it's needed, by other apps, so reverting it isn't really an option.
You could try to see what the app is sending to the server, to try to guess what the server doesn't like about the data. That'd probably require hacking schan_EncryptMessage in dlls/secur32/schannel.c to output the buffers it's given.