Here is a list of the server addresses required for accessing Microsoft Update servers.
This may required for allowing access to these servies through firewall or proxy policies.
- 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
See this article for further information as this list may be updated over time.
Configure the Firewall Between the WSUS Server and the Internet | Microsoft Learn
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