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 includes the inability to install future updates. This new update is available to remove KB 3004394 from your computer.
For more information about the KB 3004394 update, see the following Microsoft Knowledge Base article:
December 2014 update for Windows Root Certificate Program in Windows
How to obtain this update
This update is available from Windows Update
Microsoft Download Center
The following files are available for download from the Microsoft Download Center.
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
There are no prerequisites for installing this update.
To apply this update, you do not have to make any changes to the registry.
You may have to restart the computer after you apply this update.
Update replacement information
This update does not replace a previously released update.