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AMA: Hotpatching Windows - client and server

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Wednesday, Dec 11, 2024, 08:30 AM PST
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Interested in learning how to deploy updates faster, with less restarts? Bring your questions to this Ask Microsoft Anything session. Get tips on how to enable hotpatch updates for client devices and servers. Find the confidence you need to enable day-one protection. We’re here to help you integrate hotpatching as part of your overall update management strategy. This session is part of Tech Community Live: Windows edition.

On the panel: Nevine Geissa, David Callaghan, Vishal Bajaj, Surabhi Calla

 

Pearl-Angeles
Updated May 14, 2025

41 Comments

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  • KaranS340's avatar
    KaranS340
    Brass Contributor

    Hi there,

    One question: is this a completely different product, or is it part of Windows Autopatch, which is a feature in Intune? If it's a different product as a whole, then how does it compete with Windows Autopatch (like pro's and con's)?

    Thanks.

    • VishalBajaj's avatar
      VishalBajaj
      Icon for Microsoft rankMicrosoft

      For client there is no additional cost. For Azure Arc connected Windows Server 2025 machines that opt into Hotpatching we are yet to finalize. An announcement will be made once that is finalized. 

    • Heather_Poulsen's avatar
      Heather_Poulsen
      Icon for Community Manager rankCommunity Manager

      The panel would love to know more about how this would help you. What use cases do you need to support? 

      • Michael-CM's avatar
        Michael-CM
        MCT

        We have servers onprem which are managed by configuration manager update management. Management by Azure Update Manager is no option for the next years.

  • Sreekanth_Reddy's avatar
    Sreekanth_Reddy
    Copper Contributor

    1. Today is the first patch Tuesday after Hot patch available, as per the documentation - it says Baseline Patch available only first month of every quarter. Does this mean we should wait for January month to come to test Hot patch functionality?

    2. For Hot patch policy to apply, does the targeted Windows 11 24H2 group should be excluded from regular WUfB update rings? My assumption is PC should not be excluded from WUfB update rings to apply Hot Patch policy - If Yes, today we have received "Pending Reboot" for Dec'2024 security patch from regular WUfB update rings - Can you please explain a little bit?

    • David_Guyer's avatar
      David_Guyer
      Icon for Microsoft rankMicrosoft

      Sreekanth_Reddy 

      1. You are correct that a device first needs to be on the baseline before a hotpatch will be applicable, but since the system will still deploy the full update when not applicable to a device, you can configure the policy now.  As you point out, you'll probably really see these start to apply hotpatches in February.

        2. You don't need to exclude from Update Rings to take advantage of hotpatching.  They will work together.  Your pending reboot is likely since the device is not yet applicable for the hotpatch (from #1 above) so received the full update.

       

      -HTH,

      David

      • Pearl-Angeles's avatar
        Pearl-Angeles
        Icon for Community Manager rankCommunity Manager

        Sreekanth_Reddy - thanks for participating in AMA: Hotpatching Windows - client and server. Along with the response above, the panelists covered your first question around 2:38 and your second question around 17:10.

  • GrantVenner's avatar
    GrantVenner
    Copper Contributor

    Will .NET Framework cumulative updates also be hotpatch-enabled?  If not, it's likely that clients will still require a monthly reboot for these specific update types.

    • David_Guyer's avatar
      David_Guyer
      Icon for Microsoft rankMicrosoft

      Grant,   we can appreciate how it would be great to hotpatch other updates, but I don't know of any plans to do so yet, especially since we are in the early life of hotpatching for Windows.   Even with a .NET Framework reboot, you are still getting the benefit of having the Windows OS security updates in place faster since you don't have to wait for the reboot, which is a big win.

      HTH,

      -David

      • Pearl-Angeles's avatar
        Pearl-Angeles
        Icon for Community Manager rankCommunity Manager

        GrantVenner thanks for participating in AMA: Hotpatching Windows - client and server. Along with David's response, the panelists covered this topic at 13:07.

  • satishDava's avatar
    satishDava
    Copper Contributor

    What are the pre-requisites, is the Intune Auto Patch must be enabled for this or just update ring policies should be fine  

    • Pearl-Angeles's avatar
      Pearl-Angeles
      Icon for Community Manager rankCommunity Manager

      Thanks for participating in the AMA: Hotpatching Windows - client and server. For reference, the panel covered this topic around 4:30

Date and Time
Dec 11, 20248:30 AM - 9:00 AM PST