Enabling SHA2 Certificate Support on Windows Server 2003

Solution 1:

The Crypt32.dll 5.131.3790.5235 version fixes the issue (after a reboot). It is available at http://support2.microsoft.com/kb/2868626

The previously installed version was 5.131.3790.5014 version and it did not fix the issue. According to this post (https://mendel129.wordpress.com/tag/crypt32-dll/), there are two variants of the 5014 version: one from Windows Update (KB2661254, does not work) and another as a QFE (KB968730).

Solution 2:

This problem is solved by installing KB3072630, which is installed automatically if you have Windows Update enabled. The version number of Crypt32.dll is 5.131.3790.5668 after the update.

KB938397 and KB968730 are deprecated and replaced by the update above.