We have came across an error this month after patching our environment.
Most of our windows 2008 R2 servers started having the below event flooding the event logs
“Activation context generation failed for “C:Windowssystem32conhost.exe”. Dependent Assembly Microsoft.Windows.SystemCompatible,processorArchitecture=”amd64″,
publicKeyToken=”6595b64144ccf1df”,type=”win32″,version=”6.0.7600.16816″ could not be found. Please use sxstrace.exe for detailed diagnosis.”
It turns out that this error is caused by “Security Update for Windows Server 2008 R2 x64 Edition (KB2507938)” and this can safely be ignored. For more information please see “http://support.microsoft.com/kb/2507938/”.
You can get rid of the alert by upgrading to 2008 R2 SP1.