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Microsoft released its October 2024 Windows security updates on October 8, 2024. The packages differ by Windows version: Windows 11 version 24H2 received KB5044284 (build 26100.2033), while Windows 10 version 22H2 received KB5044273 (build 19045.5011). These are historical release details; availability has since changed for KB5044273.
What was included in Microsoft’s October 2024 Windows release?
Microsoft’s October 8, 2024 security announcement lists Windows 11 versions 24H2, 23H2, 22H2, and 21H2. For those listed versions, it gives a maximum severity of Critical and a greatest impact of Remote code execution. The announcement is available from the Microsoft Security Response Center.
Microsoft describes the monthly Windows security release as cumulative: it includes security fixes for vulnerabilities affecting the products as well as non-security updates. The Windows 11 and Windows 10 examples below identify packages for particular versions; they are not a complete list of every Windows package released that month. Check Microsoft’s October 2024 release information and Windows release health for other editions and servicing channels.
Which October 2024 KB applies to your Windows version?
| Windows version or edition | October 2024 package | Resulting build | Distribution or status |
|---|---|---|---|
| Windows 11 version 24H2, all editions | KB5044284 | 26100.2033 | Initially offered through Windows Update and Windows Update for Business; administrators could also use WSUS, the Microsoft Update Catalog, or deployment tools. Details: Microsoft Support. |
| Windows 10 version 22H2 | KB5044273 | 19045.5011 | Microsoft’s support page now marks the update expired; it says the package was removed from the Catalog and other release channels on March 31, 2026. Details: Microsoft Support. |
| Windows 10 Enterprise LTSC 2021 / Windows 10 IoT Enterprise LTSC 2021 | KB5044273 | 19044.5011 | Covered by the same Microsoft support page; check applicability for the specific servicing channel and device. |
Microsoft’s release information independently maps the Windows 10 version 22H2 October 8, 2024 B release to KB5044273 and build 19045.5011. The package pages and release guide are the authoritative places to confirm whether a particular edition or servicing path applies.
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What is KB5044284, and what did it fix?
KB5044284 is the October 8, 2024 cumulative security update for Windows 11 version 24H2. Microsoft lists OS Build 26100.2033 and says, “This update addresses security issues for your Windows operating system.” Its notes also include improvements from KB5043178, released September 26, 2024.
Remote Desktop Gateway Service issue
One documented fix addresses Remote Desktop Gateway Service becoming unresponsive when a service used RPC over HTTP. The problem could disconnect clients. This is a specific issue Microsoft called out in the KB5044284 notes, not a description of every change in the package.
How were the updates installed?
For a personal Windows 11 PC
Microsoft listed KB5044284 as available through Windows Update. On a device that still applies to a particular update, Windows Update is the ordinary installation route; check the device’s Windows version before looking for a specific KB.
For managed devices or offline images
Microsoft also documented Windows Update for Business, WSUS synchronization, manual packages from the Microsoft Update Catalog, and deployment with DISM or Windows PowerShell. Those are administrator workflows for managed environments or image servicing, rather than steps most home users need to perform.
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Is KB5044273 still available?
No. Although KB5044273 was released on October 8, 2024 for Windows 10 version 22H2 and specified LTSC editions, Microsoft’s support page now says: “As of March 31, 2026, this update is no longer available from the Microsoft Update Catalog or other release channels.” The page recommends updating devices to the latest version of Windows. This later expiration notice should not be confused with the package’s original 2024 release status.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the release information does not establish
The cited Microsoft release materials do not establish an exact total number of Windows vulnerabilities addressed or a verified list of exploited Windows CVEs for this release. The severity and impact labels in Microsoft’s October announcement describe the listed Windows 11 versions; they are not a vulnerability count or confirmation that a particular flaw was exploited.
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