Windows 11 · 25H2 · Release · 2026-01 OOB
Windows 11, version 25H2 (26200.7628)
- Release
- KB5078127 — Microsoft's article, opens in a new tab
- amd64
- arm64
Windows 11 25H2: Current mainstream release
AI summary
Windows 11 25H2 (26200.7628) delivers continuous-innovation features, Wi‑Fi 7 enterprise support, refreshed account experiences, and faster Task Manager process sorting for smoother performance. (learn.microsoft.com)
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 Sign-In Failure Confirmed: Fix KB5078127 for Credential Prompt Issues
- Issue Outlook PST Freeze on Windows 11 Fixed by KB5078127 Patch
- Issue Outlook Crashes on Windows 11 After January 2026 Patch: Emergency Fix KB5078127
- Issue Windows 11 KB5078127 Emergency Patch Fixes Cloud File IO and PST Outlook Issues
In the news
- Coverage January 2026 Windows OOB Updates: KB5077744, KB5078132 & KB5078127 Guide
- Issue Windows 11 Sign-In Failure Confirmed: Fix KB5078127 for Credential Prompt Issues
- Fix Windows 11 January 2026 Patch Regressions and KB5078127 Fix
- Fix KB5078127 Emergency Patch Restores Outlook and Cloud File I/O in Windows 11
- Fix Windows 11 January 2026 Patch Chaos: KB5078127 OOB Cloud File IO Fix
- Fix Windows 11 January 2026 Patch Cascade: Cloud File I/O Failures and the KB5078127 Fix
- Issue Outlook PST Freeze on Windows 11 Fixed by KB5078127 Patch
- Issue Outlook Crashes on Windows 11 After January 2026 Patch: Emergency Fix KB5078127
Discussed on the forum
- Thread Robocopy läuft seit Version 25H2 nicht mehr wie gewohnt
- Issue KB5077181 fails on Win11 25H2 (26200.7623) with 0x800f0983; SoftwareDistribution rename triggered boot failure/BitLocker
- Issue [SOLVED] 2026-02 Security Update (KB5077181) (26200.7840) Failing
- Thread livekd no longer working on Windows 11 25H2