MS13-004: Description of the security update for the .NET Framework 3.5.1 on Windows 7 and Windows Server 2008 R2: January 8, 2013

Known issues with this security update

• After you install this security update on a system that is running Windows Communication Foundation (WCF), you may receive an error message that resembles the following:
  
  
  
  
  
  System.ServiceModel.Ativation.iis7helper.extendedprotectiondotlessspnnotenabledthrowhelper(system.object)
  
  
  
  For more information about how to resolve this issue, click the following article number to view the article in the Microsoft Knowledge Base:
  
  2801728 WCF services hosted on IIS on Windows 7 or on Windows Server 2008 R2 may receive an exception error message after you install an update for .NET Framework 3.5 SP1 for WCF
  

Download information

This update is available for download from the Microsoft Download Center:

Command-line switches for this update

For information about the various command-line switches that are supported by this update, click the following article number to view the article in the Microsoft Knowledge Base:

Restart information

This update does not require a system restart after you apply it unless files that are being updated are locked or being used.

Update replacement information

This update does not replace any previously released update.

Update removal information

Note We do not recommend that you remove any security update.

To remove this update, use the Programs and Features item in Control Panel.

File information

The English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.