Secondary Site Server SUP unable to Sync with System Center Configuration Manager 2007

To resolve this issue re-register the wsusmsp.dll and the wsyncact.dll files.  To do this follow these steps:


 


1.       Open a CMD window and navigate to c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\.


2.       Run the following command lines in the order listed:


 


·         RegAsm.exe C:\Program Files\Microsoft Configuration Manager\bin\i386\wsyncact.dll /unregister


·         RegAsm.exe C:\Program Files\Microsoft Configuration Manager\bin\i386\wsyncact.dll


·         c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Program Files\Microsoft Configuration Manager\bin\i386\wsusmsp.dll /unregister


·         c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Program Files\Microsoft Configuration Manager\bin\i386\wsusmsp.dll


 


 


The above commands register the Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WSyncAction.WSyncAction  class  and the Microsoft.SystemsManagementServer.WSUS.WSUSServer class successfully.


 


3.       Run regedit.exe and verify that the following registry keys exist:


·         HKEY_CLASSES_ROOT\Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WSyncAction.WSyncAction


 


·         HKEY_CLASSES_ROOT\CLSID\{E5272449-2083-4020-ACEE-18A145F79A75}


 


4.       Wait for the next Sync status to see if the sync is working now.


 


Note Uninstalling and reinstalling the SUP will not resolve this issue.