JohnHroch

Charles, how did you managed uninstall this particular update. I tried almost everything on WS2008R2SP1, wusa.exe, msiexec etc. Did the WUAgents on client machines downgraded as well?

I started a thread regarding this issue directly on Microsoft Social Technet forums. Hopefully, this gets resolved till next Patch Tuesday in August.

Hi Wilby, here is an interesting blog post from July 14, 2014 with all the considerations and how-tos for upgrading the WU agent on client computers... http://blogs.technet.com/b/configmgrteam/archive/2014/07/14/how-to-install-the-windows-update-agent-on-client-computers.aspx Cheers, J.

Hi Wilby, as we have similar environment I would not recommend installing KB2938066 just yet. I installed the update on my SCCM/WSUS machine (fully patched WS2012 R2) and the clients were not checking in for the updates. As you mentioned, the clients need to be updated in different way unless managed by WSUS directly. Most of all, I ran into some issues in our second (an much larger environment), where the WSUS server (WS2008 R2 SP1 with WSUS 3.0 SP2) stopped self-updating and other server clients (mostly WS2008 R2 SP1) have troubles checking in after installing KB2938066. Unfortunatelly, these changes cannot be rolled back. Here is part ot the WindowsUpdate.log in case you have some advice for me... Agent ************* Agent ** START ** Agent: Finding updates [CallerId = AutomaticUpdates] Agent ********* Agent * Online = Yes; Ignore download priority = No Agent * Criteria = "IsInstalled=0 and DeploymentAction='Installation' or IsPresent=1 and DeploymentAction='Uninstallation' or IsInstalled=1 and DeploymentAction='Installation' and RebootRequired=1 or IsInstalled=0 and DeploymentAction='Uninstallation' and RebootRequired=1" Agent * ServiceID = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7} Managed Agent * Search Scope = {Machine} Setup Checking for agent SelfUpdate Setup Client version: Core: 7.6.7600.320 Aux: 7.6.7600.320 Misc Validating signature for C:\Windows\SoftwareDistribution\SelfUpdate\wuident.cab with dwProvFlags 0x00000080: Misc Microsoft signed: NA Misc Validating signature for C:\Windows\SoftwareDistribution\SelfUpdate\TMPC435.tmp with dwProvFlags 0x00000080: Misc FATAL: Error: 0xc000000d when verifying trust for C:\Windows\SoftwareDistribution\SelfUpdate\TMPC435.tmp Misc WARNING: Digital Signatures on file C:\Windows\SoftwareDistribution\SelfUpdate\TMPC435.tmp are not trusted: Error 0xc000000d Setup FATAL: Ident cab verification failed with error 0XC000000D Setup WARNING: SelfUpdate check failed to download package information, error = 0xC000000D Setup FATAL: SelfUpdate check failed, err = 0xC000000D Agent * WARNING: Skipping scan, self-update check returned 0xC000000D Agent * WARNING: Exit code = 0xC000000D Agent ********* Agent ** END ** Agent: Finding updates [CallerId = AutomaticUpdates] Agent ************* Agent WARNING: WU client failed Searching for update with error 0xc000000d AU >>## RESUMED ## AU: Search for updates [CallId = {9CD5DB56-3B59-4481-90D0-FD1E34D65233}] AU # WARNING: Search callback failed, result = 0xC000000D AU # WARNING: Failed to find updates with error code C000000D AU ######### AU ## END ## AU: Search for updates [CallId = {9CD5DB56-3B59-4481-90D0-FD1E34D65233}] AU #############