Windows update ports.

WindowsGeek 21 Reputation points
2021-02-23T07:29:31.067+00:00

Hello,
I want my Windows can't connect to the Internet, but receive updates. Which ports must be open?

Thank you.

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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3 answers

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  1. Sunny Qi 10,916 Reputation points Microsoft Vendor
    2021-02-23T08:27:59.5+00:00

    Hi,

    Thanks for posting in Q&A platform.

    Windows update uses port 80 for HTTP and port 443 for HTTPS.

    Please check the documents as below:

    If there is a corporate firewall between WSUS and the Internet, you might have to configure that firewall to ensure WSUS can obtain updates. To obtain updates from Microsoft Update, the WSUS server uses port 443 for HTTPS protocol. Although most of corporate firewalls allow this type of traffic, there are some companies that restrict Internet access from the servers due the company's security policies. If your company restricts access, you need to obtain authorization to allow Internet access from WSUS to the following list of URLs:

    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

    https://download.microsoft.com

    http://*.download.windowsupdate.com

    http://wustat.windows.com

    http://ntservicepack.microsoft.com

    http://go.microsoft.com

    http://dl.delivery.mp.microsoft.com

    https://dl.delivery.mp.microsoft.com

    For more details, please refer to the following official article:

    https://learn.microsoft.com/en-us/windows-server/administration/windows-server-update-services/deploy/2-configure-wsus

    Best Regards,
    Sunny

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  2. JorgR 1 Reputation point
    2022-07-17T13:37:38.897+00:00

    This is for Windows Server only. What are the URLs for Win 10 Pro Clients ?

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  3. John Paitaki 6 Reputation points
    2022-08-18T07:50:19.803+00:00

    Windows Update requires TCP port 80, 443, and 49152-65535.

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