After an upgrade from 2008 R2 to 2012 R2 I had issues with WSUS not running. I have removed roles for WSUS, IIS and the WID, renamed the WID directory in C;\Windows to .old, reboot and reinstall but I still have the same issue. When trying to run the post installation tasks it prompts for the location to store the updates but almost as soon as Run is clicked I receive an error that the microsoft Management Console has stopped working with the following details.

Problem signature:
  Problem Event Name: CLR20r3
  Problem Signature 01: mmc.exe
  Problem Signature 02: 6.3.9600.16384
  Problem Signature 03: 5215ef8f
  Problem Signature 04: System
  Problem Signature 05: 4.0.30319.34003
  Problem Signature 06: 522ec39f
  Problem Signature 07: 3fec
  Problem Signature 08: 3b8
  Problem Signature 09: System.ComponentModel.Win32
  OS Version: 6.3.9600.2.0.0.272.7
  Locale ID: 2057
  Additional Information 1: b376
  Additional Information 2: b376ba95bedbd518328ed0407772d20c
  Additional Information 3: 2cdd
  Additional Information 4: 2cdd6573ca3a99b682060228c5ceb1c2





At the same time two errors are logged in the Application log,

ID1026 .NET Runtime

Application: mmc.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.ComponentModel.Win32Exception
Stack:
   at System.Diagnostics.Process.StartWithCreateProcess(System.Diagnostics.ProcessStartInfo)
   at Microsoft.UpdateServices.UI.SnapIn.Dialogs.PostInstallDialog.RunPostInstall(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()



and Event ID 1000 Application Error

Faulting application name: mmc.exe, version: 6.3.9600.16384, time stamp: 0x5215ef8f
Faulting module name: KERNELBASE.dll, version: 6.3.9600.16408, time stamp: 0x523d557d
Exception code: 0xe0434352
Fault offset: 0x000000000000ab78
Faulting process id: 0x196c
Faulting application start time: 0x01d030500ca78295
Faulting application path: C:\Windows\system32\mmc.exe
Faulting module path: C:\Windows\system32\KERNELBASE.dll
Report Id: 4b72991e-9c43-11e4-80c4-f01fafe08a8b
Faulting package full name: 
Faulting package-relative application ID: 


I've tried running the .NET verification tool on all versions of .NET and all  verify ok. I have also tried uninstalling .Net 3.5 and reinstalling. Unfortunately I can't reinstall .NET4.5 as this is the only DC and I can't have downtime to rebuild from scratch. Any ideas?

Many thanks,
Baz

After an upgrade from 2008 R2 to 2012 R2

You *cannot* upgrade a WSUS server from WS2008R2 to WS2012R2, so could you please clarify what you actually did do?

Otherwise, given the error messages, I'm inclined to think you really did *Upgrade* the WS2008R2 to WS2012R2 server with the WSUS role installed, and if so, then you're basically going to have to reformat and reinstall WS2012R2 from scratch.

This scenario is plainly documented in the WS2012R2/WSUS v6 documentation:

Thanks Laurence. Well that would explain the issue but there was certainly nothing to stop me upgrading nor any warning that it shouldn't be done. Rebuilding was not an option so it's just running in Hyper-V.

Thanks,

Baz