http://bugs.winehq.org/show_bug.cgi?id=21938
--- Comment #19 from Paul Vriens Paul.Vriens.Wine@gmail.com 2010-03-08 02:52:54 --- The culprit is the test_set_provider_ex() test in advapi32/tests/crypt.c
Looks like the tests always writes MS_DEF_PROV_A back while it ignores the initial value.
Fixing the test won't be such an issue ,but what about fixing all those other boxes out there that have run this test once in their lifetime?
It looks like "Microsoft Strong Cryptographic Provider" is the default as of W2K.