Windows 11 · 25H2 · Release · Security update (Patch Tuesday)
Windows 11, version 25H2 (26200.7840)
- Release
- KB5077181 — Microsoft's article, opens in a new tab
- amd64
- arm64
Windows 11 25H2: Current mainstream release
AI summary
Windows 11, version 25H2 (26200.7840) delivers an enablement-style feature update focused on smoother Copilot+ experiences, meaningful UI refinements, and efficiency gains for faster, more responsive daily performance.
Generated from the package's release notes and forum coverage. Verify against Microsoft's release-health page before acting on it.
Known issues — reported on the forum
- Issue Windows 11 C Drive Access Denied Bug Tied to Samsung OEM Apps (KB5077181)
- Issue Windows 11 February 2026 Update KB5077181: Install Failures and Boot Issues
- Issue Windows 11 February 2026 KB5077181 Fix: GPU Black Screen dxgmms2.sys Crash
- Issue KB5077181 February 2026 Windows 11 Gaming Issues and Rollback Guide
In the news
- Issue Windows 11 C Drive Access Denied Bug Tied to Samsung OEM Apps (KB5077181)
- Coverage Windows 11 KB5077181 C: Access Denied on Galaxy Book: What IT needs to know
- Coverage Windows 11 C Drive Access Denied after KB5077181 on Samsung Galaxy Books
- Issue Windows 11 February 2026 Update KB5077181: Install Failures and Boot Issues
- Coverage Windows 11 KB5077181 Fallout: Update Failures and Trust
- Coverage KB5077181 Windows 11 February 2026 Update: Real World Regressions and Workarounds
- Issue Windows 11 February 2026 KB5077181 Fix: GPU Black Screen dxgmms2.sys Crash
- Fix Windows 11 Preview Adds One-Click Speed Test and WebP Wallpapers; KB5077181 Addresses NVIDIA Fix
Discussed on the forum
- Issue [SOLVED] 2026-02 Security Update (KB5077181) (26200.7840) Failing
- Issue KB5077181 fails on Win11 25H2 (26200.7623) with 0x800f0983; SoftwareDistribution rename triggered boot failure/BitLocker
- Thread KB5077181 échec de l'installation Windows update
- Thread livekd no longer working on Windows 11 25H2