Windows 10 · 21H2 · Release · 2026-09 OOB

Feature update to Windows 10, version 21H2 (19044.7727)

Windows 10 21H2: Servicing ended

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AI summary

This Windows 10 21H2 feature update improves system performance and reliability, strengthens security protections, and resolves bugs affecting core services, hardware, and applications.

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

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In the news

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