Windows Server update services – Troubleshooting

1. Telnet wsus server on port 80 (default) or other as per your environment.
2. Check windows update log in the location c:\windows\windowsupdate.log
3. Check if the group policy is correct , gpedit.msc – Local Computer Policy – Computer Comfiguration – Administrative Templates – Windows Components – Windows update –  a)check “specify intranet microsoft update service location” – It should point to your wsus server and the port number should be correct b) Check if “client-side targeting is enabled” (If enabled, the computer will appear under the group name mentioned in wsus server, if not enabled ignore).
4. Check the proxy settings.
5. Check firewall.
6. Delete the software distribution folder from the location c:\Windows\SoftwareDistribution and run the command wuauclt.exe /detectnow.