Cryptdll.dll – Pre Service Pack 2 Revision History for Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

Cryptdll.dll – Pre Service Pack 2 Revision History for Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

09-Oct-2012 – 6.1.7601.22130 – Cryptdll.dll – x86/x64 – http://support.microsoft.com/kb/2768494 – You cannot log on to a Windows 7-based or Windows Server 2008 R2-based client computer after you disable AES encryption for Kerberos authentication

23-May-2011 – 6.1.7601.21732 – Cryptdll.dll – x64 – http://support.microsoft.com/kb/2545833 – Slow performance occurs when many user authentication requests are handled in Windows Server 2008 R2