Hello Fred_J4,
Thank you for posting in Microsoft Community forum.
Windows Server uses the following URLs and ports to access Microsoft's Windows Update service:
- http://windowsupdate.microsoft.com
- http://*.windowsupdate.microsoft.com
- https://*.windowsupdate.microsoft.com
- http://*.update.microsoft.com
- https://*.update.microsoft.com
- http://*.windowsupdate.com
- http://download.windowsupdate.com
- http://download.microsoft.com
- http://*.download.windowsupdate.com
- http://wustat.windows.com
- http://ntservicepack.microsoft.com
The ports used are typically port 80 and port 443 for HTTP and HTTPS respectively. However, some updates may require additional ports to be open. It's important to ensure that your firewall and proxy settings allow access to these URLs and ports to ensure that Windows Server can access the Windows Update service.
Step 2 - Configure WSUS | Microsoft Learn
I hope the information above is helpful.
If you have any question or concern, please feel free to let us know.
Best Regards,
Haijian Shan