By Lawrence Abrams
Publication Date: 2026-01-13 18:56:00
Microsoft has released the KB5073724 extended security update to fix the Patch Tuesday security updates, including 3 zero-days and a fix for expiring Secure Boot certificates.
If you are running Windows 10 Enterprise LTSC or are enrolled in the ESU program, you can install this update like normal by going into Settings, clicking on Windows Update, and manually performing a ‘Check for Updates.’
Source: BleepingComputer
After installing this update, Windows 10 will be updated to build 19045.6809, and Windows 10 Enterprise LTSC 2021 will be updated to build 19044.6809.
What’s new in Windows 10 KB5073724
Microsoft is no longer releasing new features for Windows 10, and the KB5073724 update contains only security fixes and bug fixes introduced by previous security updates.
With today’s January 2026 Patch Tuesday, Microsoft has fixed 114 vulnerabilities, including three zero day flaws.
KB5073724 fixes an actively exploited…
