Patch intelligence record
Windows 11 25H2 (Build 26200.7627)
Current reports mention update/install failure. This page covers one cumulative update, not the whole 25H2 servicing train; reports about a later update are counted on that update's own page.
Recommendations
- Pause updates if this machine is doing deadline-sensitive or production work.
- Check Microsoft's known-issue and safeguard-hold list for this KB before installing.
- Keep the uninstall path in mind: a cumulative update can be removed from Settings > Windows Update > Update history for a limited window after installation.
Current reports mention update/install failure in windows update.
Too few reports for a firm verdict yet — treat this as early evidence.
- Accepted reports
- 1
- Latest evidence run
- Oct 6, 2026
- Healthy sources
- 2 fresh (success / no reports) · need 2
- Microsoft Q&A (search) Checked — no reports found last checked Oct 6, 2026
- techcommunity windows sitemap Checked — no reports found last checked Oct 6, 2026
Monitoring reflects community-evidence collection health for this exact release — an absence of reports is not a safety guarantee, and this is separate from the AUXSAYS verdict.
Vendor Known Issues — No vendor-known issue data captured for this patch.
AUXSAYS has not captured official issue data for this patch. This does not indicate the vendor has no issues. Not counted as community reports.
Official Patch Notes — vendor release notes captured from the official source
Windows 11 25H2 cumulative update, OS build 26200.7627 (KB5077744). Released 2026-01-17 on the General Availability Channel. Update type 2026-01 OOB. This is the official Microsoft Windows release-health entry (learn.microsoft.com/windows/release-health). Known-issue and safeguard-hold details are published on the per-version Windows release-health status page.
Windows 11 in these notes: .
Windows 11 25H2 cumulative update, OS build 26200.7627 (KB5077744). Released 2026-01-17 on the General Availability Channel. Update type 2026-01 OOB. This is the official Microsoft Windows release-health entry (learn.microsoft.com/windows/release-health). Known-issue and safeguard-hold details are published on the per-version Windows release-health status page.
Technical Details
- Released
- Jan 17, 2026
- File size
- Official source checked
- Sep 22, 2026
- Official notes checked
- Sep 22, 2026
Checksum
Use these hashes to verify downloaded installers match the files published with the official release.
User Reports / Sources (1)
User report sources used for the current read.
- Microsoft Learn Q&A. (2026, January 28). Cannot install KB5074109 nor its superceding KB5077744 - Microsoft Q&A. microsoft learn qna Issue: update/install failure in windows update Workflow: windows update
Official sources
- Microsoft. (2026, January 17). Windows 11 release information.release health
- Microsoft. (2026, January 17). Windows release health.release health
- Microsoft. Download page.download