.Net Patch MS13-004 [KB 2756920] causing problem on SharePoint,Exchange 2010, .Net Web Apps

Yesterday Microsoft released a patch MS13-04[KB 2756920] which is causing extensive issues with Web[.Net] related applications.

Windows 2008 R2 RTM customer are mainly affected by this patch. The following exception is thrown after installing KB2756920 on Win7/Win2k8 R2 RTM when any WCF service is hosted on IIS using HTTPS in which the machine has a QFE that only contains System.ServiceModel.dll (S.SM.dll) and not System.ServiceModel.WasHosting.dll (S.SM.WasHosting.dll).

Server Error in ‘/SecurtyTokenServiceApplication’ Application       
Method not found:        
‘System.String System.ServiceModel.Ativation.iis7helper.extendedprotectiondotlessspnnotenabledthrowhelper(system.object)


Read More @ ASPRANGERS.com

Comments (3)

  1. Hi,

    A workaround was posted on following forum thread for this issue:



    Vivek Mishra -MSFT

  2. SharePoint Admin says:

    You have to install service pack 1 for windows and deinstall the patch, then the patch will no longer be needed.

  3. Rob says:

    Yep, this patch toasted my test Exchnage 2010 server. Luckly our production Exchange server is 2003. (Stuff like this sure makes me want to stay with Exchange 2003 !!!!)

Skip to main content