.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 !!!!)