Windows 10 (KB5065429 / KB5065428 / KB5065427 / KB5065430) September 2025 Patch Tuesday out

Microsoft has released September 2025 Patch Tuesday cumulative updates for Windows 10 version 21H2 and version 22H2 under KB5065429. There are also new updates for older Windows 10 versions.

It's the second Tuesday of the month, which means it's Patch Tuesday time again. As such, today, Microsoft is rolling out the monthly security update (also called "B release") for September 2025 on Windows Server 20H2 and Windows 10 for the latest supported versions, 20H2, 21H2, and 22H2.

The new updates are being distributed under KB5065429, bumping up the builds to 19044.6332 and 19045.6332. You can find standalone links to download the new update on the Microsoft Update Catalog at this link.

The major highlight of the release is security patches. Microsoft writes:

[Internal Windows OS] This update contains miscellaneous security improvements to internal Windows OS functionality. No specific issues are documented for this release.

This release has known issues with Noto fonts.

Some of the older Windows 10 versions have also received updates today, which have been listed below with their respective release notes (KB) linked as well as links to download them at Microsoft's Update Catalog:

Version	KB	Build	Download	Support
1809	KB5065428	17763.7792	Update Catalog	Long-Term Servicing Channel (LTSC)
1607	KB5065427	14393.8422	Update Catalog
1507	KB5065430	10240.21128	Update Catalog

It is noteworthy that Windows 10 20H2 and Windows 10 1909 reached the end of servicing. Non-LTSC editions of 21H2 have also reached the end of servicing.