[BESAdmin-Announcements] BigFix Patch is pleased to announce the support for Microsoft Hotpatch for Windows Server 2025

[Announcements for BES Administrators]

**Description**

Microsoft Hotpatch is a Windows update feature that installs Security
Patches on eligible endpoints without requiring a system reboot, ensuring
higher availability and reduced downtime.

The support of Hotpatch content in BigFix requires a dedicated built-in
utility that is downloaded on the endpoint through the Fixlet.

During the execution of the fixlet, the utility is executed in order to
call the Windows Update APIs to connect to Microsoft Update and install the
applicable hotpatch on machines that require it.

The Hotpatch fixlets will be published in the Patches for Windows Site.

**Customer Benefits**

* Minimized Downtime – Hotpatches apply updates without restarting the
server, reducing service interruptions.

* Seamless Deployment – Delivered through BigFix Fixlets, ensuring easy
rollout across environments.

* Consistent Security – Keeps systems protected with the latest Microsoft
updates while maintaining uptime.

**Supported Environments**

* Windows Server 2025 (Azure-hosted)

* Windows Server 2025 (On-premises, connected via Azure Arc)

***How it works***
1. Deploy the Fixlet published in the “Patches for Windows” External Site.
2. The Fixlet downloads the required utility on the endpoint.
3. The utility connects via the Windows Update API to download the Hotpatch
binary and install it.
4. Targeted machines receive the hotpatch update without a reboot.

**Pre-Requirements**

* Installing Hotpatch content requires entitlement from Microsoft and
enablement of the devices. Check the Microsoft Website on how to do that

* The endpoint must connect to Microsoft Update endpoints (e.g.,* [*
windowsupdate.microsoft.com*](http://windowsupdate.microsoft.com/)) to
download and apply the Hotpatch.

With Regards
Girish B R
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