I just spend a day troubleshooting Software updates errors at a customer site and thought I would share my experiences.
The error codes are all found in the report Last scan state by collection
|Error code on client||Solution|
|16398||If you search the web you will get many hits on this error. The solution is to apply this WSUS 3.0 SP1 patch http://www.microsoft.com/downloads/details.aspx?FamilyId=6AA8A49D-170C-4077-8B9B-61F7BF5A1281&displaylang=en
Once the update is applied you can force a scan on the client. Monitor the ScanAgent.log file
|1682||This is a classic error. Check the wuahandler.log file and it will report that the local wsus settings (applied by the Configuration Manager) is overwritten by a higher authority. That higher authority is most likely a group policy.
If you are certain that all WSUS group policies has been removed then verify that the client is actually applying group policies. I had 40-50 machines that for some reason didn’t apply their group policies. Those were joined to a workgroup and rejoined to the domain.
|1683||Reinstall the Windows Update Agent causes error 0X800703E3|
If you are still out of luck try running this from a bat file:
regsvr32 wuapi.dll /s
regsvr32 wuaueng.dll /s
regsvr32 wuaueng1.dll /s
regsvr32 wucltui.dll /s
regsvr32 wups.dll /s
regsvr32 wups2.dll /s
regsvr32 wuweb.dll /s
net stop wuauserv
net stop bits
rmdir /S /Q %windir%\softwaredistribution
net start wuauserv
net start bits
exit /B 0