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KB5077179BMonthly security release (Patch Tuesday) · 2026-02 B

Monthly security release (Patch Tuesday) for Windows 11, version 26H1

Support article Update Catalog CVEs in Security CVE list for a ticket

Is it safe to deploy?

Everything in the February 2026 Patch Tuesday cycle
1Windows version
0CVEs fixed · 0 critical
0Exploited or in CISA KEV
0Open known issues affecting it
—Restart required (per MSRC)

Applies to

From Microsoft's release-information tables
Servicing branchOS buildReleaseAvailable
Windows 11, version 26H1 28000.1575 B 2026-02 B 10 Feb 2026

Known issues in this update

Windows release health

No known issues listed

Windows release health lists no issues from this KB or the update it builds on.

Issues this update resolves

No resolved issues listed

Windows release health names no issues fixed by this KB.

Security fixes

0 Microsoft CVEs · most urgent first

No CVE fixes listed

MSRC lists no CVEs for this KB in the collected releases; preview (D) and out-of-band updates often carry no new security fixes.

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