Windows 11 26H1 (Build 28000.1643)

ProductWindows 11 Version26H1 Release dateFeb 24, 2026 File size

Evidence summary: Not enough reports 0 confirmed patch-specific community reports

Accepted reports: 0
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 26H1 cumulative update, OS build 28000.1643 (KB5077239). Released 2026-02-24 on the General Availability Channel. Update type 2026-02 D. 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: .

Technical Details

Released: Feb 24, 2026
File size
Official source checked: Oct 6, 2026
Official notes checked: Oct 6, 2026

Checksum

Use these hashes to verify downloaded installers match the files published with the official release.

User Reports / Sources (0)

No user report sources have been counted for this record yet.

Official sources

Microsoft. (2026, February 24). Windows 11 release information.release health
Microsoft. (2026, February 24). Windows release health.release health
Microsoft. Download page.download