SOLVED: Windows Server Update Services WSUS SYNCRONIZATION DETAILS, RESULT: THE ERROR TYPE IS UNKNOWN

There are several solutions to the error below, but in my case the issue was resolved after a simple WSUS > OPTIONS > SERVER CLEANUP.  This was odd because I run the Server Cleanup Wizard with regularity.

SYNCRONIZATION DETAILS > RESULT: THE ERROR TYPE IS UNKNOWN

TypeInitializationException: The type initializer for ‘Microsoft.UpdateServices.ServerSyncWebServices.ServerSync.ServerSyncProxy’ threw an exception. —> System.Net.WebException: Unable to connect to the remote server
at Microsoft.UpdateServices.Internal.ClassFactory.CreateInstance(Type type, Object[] args)
   at Microsoft.UpdateServices.ServerSync.ServerSyncLib.GetWebServiceProxyInternal(UpdateServerConfiguration serverConfig, WebServiceCommunicationHelper webServiceHelper, Boolean useCompressionProxy)
   at Microsoft.UpdateServices.ServerSync.ServerSyncLib.GetWebServiceCompressionProxy(UpdateServerConfiguration serverConfig, WebServiceCommunicationHelper webServiceHelper)
   at Microsoft.UpdateServices.ServerSync.CatalogSyncAgentCore.RetrieveSubscriptionData()
   at Microsoft.UpdateServices.ServerSync.CatalogSyncAgentCore.ExecuteSyncProtocol(Boolean allowRedirect)

In my case I restarted four services:

  1. WSusCertServer
  2. Update Services
  3. Software Protection (which turns back off after a short while)
  4. I then did an IIS RESET (I could have just restarted the WORLD WIDE WEB PUBLISHING SERVICE) but still had the error, so after some digging through blogs,

Note that I found a number of references to patch KB2720211 breaking WSUS sync, but this was not my issue.

Comments

  1. Avatar
    SamarP April 22, 2014 at 7:08 am

    Error : Connection Error
    Detail : An error occurred trying to connect the wsus server. This error can happen for a number of reasons. Check connectivity with the server. Please contact your network administrator if the problem persistes.
    Click reset server node to try to connect to the server again.

    Please help me someone.

    • Ian Matthews
      Ian Matthews May 11, 2014 at 8:15 pm

      This sounds like you are trying to connect to your local server install of WSUS and it is failing. This is not the problem discussed in this thread and I have not see it, sooo I can suggest the obvious things like, restart the service, reboot the server…

  2. Avatar
    Aswani Kumar February 18, 2013 at 7:41 am

    Hi Ian,

    Thanks for the article.

    It has helped me resolve the issue.

    I have restarted the 1. WSusCertServer and 2.Updateservices ONLY.

    regards,
    Aswani Kumar

Questions or Comments?