What should I do if the connection between wsus and Microsoft server fails?

WSUS cannot connect to Microsoft servers for a variety of reasons, including: network connection issues, incorrect proxy settings, ports not open, date and time out of sync, and database corruption. The solutions are: verify network connection, check proxy settings, check ports, synchronize date and time, repair database, reinstall WSUS, or contact Microsoft Support.

What should I do if WSUS fails to connect to Microsoft server

Question: Why does my WSUS Server can't connect to Microsoft server?

Answer: There are many reasons for WSUS connection failure. Here are a few common solutions:

1. Verify Internet Connection

• Make sure the WSUS server is connected to the Internet.
• Check whether your firewall or proxy settings allow the WSUS server to access the Microsoft Update website.

2. Check proxy settings

• If you are using a proxy server, make sure WSUS is properly configured to use it.
• Navigate to Options > Updates > Proxy Server on the WSUS Management Console.

3. Verify WSUS ports

• WSUS uses ports 80 and 443 for communication.
• Make sure these ports are open in the firewall.

4. Check the date and time

• The date and time of the WSUS server must be synchronized with the Microsoft server.
• Run the "w32tm /resync" command on the server to synchronize the time.

5. Repair the WSUS database

• Corrupted WSUS database may cause connection issues.
• Run the "wsusutil reset" command to repair the database.

6. Reinstall WSUS

• If all else fails, you may need to reinstall WSUS.
• Reinstalling will clear all WSUS data, so be sure to back up your settings before continuing.

7. Contact Microsoft Support

• If you still cannot resolve the WSUS connection issue, please contact Microsoft Support.
• They can help you diagnose the problem and provide a solution.

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