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 December 2025 on Windows 10 under the Extended Security Updates (ESU) program.
The new updates are being distributed under KB5071546, bumping up the builds to 19045.6691 and 19044.6691. You can find standalone links to download the new update on the Microsoft Update Catalog at this link.
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 |
17763.7792 |
Update Catalog | Long-Term Servicing Channel (LTSC) | |
| 1607 |
14393.8422 |
Update Catalog | ||
| 1507 |
10240.21128 |
Update Catalog |
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