Windows 7 and Windows Server 2008 users MUST SEE! KB 3024777

The KB 3004394 update that was dated December 10, 2014 can cause additional problems on computers that are running Windows 7 Service Pack 1 (SP1) and Windows Server 2008 R2 SP1. This (KB 3024777) includes the inability to install future updates. This new update is available to remove KB 3004394 from your computer.

http://support.microsoft.com/kb/3024777