Microsoft ships Windows 10 KB5131096 security update with November Patch Tuesday fixes
Microsoft released KB5131096 for Windows 10 Enterprise LTSC and ESU-enrolled devices, bringing them to build 19045.7846 (and 19044.7846 for LTSC 2021). The update bundles November 2026 Patch Tuesday fixes, which address 1,235 vulnerabilities including an actively exploited Outlook zero-day, plus minor fixes for printing, Remote Desktop and a Cuba daylight-saving-time adjustment.
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Because Windows 10 no longer receives new features, these updates now focus purely on keeping ESU and LTSC systems secure, highlighting how many organizations still rely on legacy Windows 10 deployments. The inclusion of a fix for an actively exploited Outlook flaw underscores the urgency for enrolled users to apply the patch promptly.
- KB5131096 applies only to Windows 10 Enterprise LTSC and ESU-enrolled devices.
- The update fixes 1,235 vulnerabilities, including one actively exploited Outlook zero-day.
- It also resolves printing and Remote Desktop bugs and adjusts Cuba's daylight saving time rules.
Source: bleepingcomputer.com, 2026-11-10
Published there as: “Microsoft releases Windows 10 KB5131096 extended security update”
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