Windows 10 21H2 (E) · Version Status
Windows 10 21H2 (E) End of Life Date
Windows 10 21H2 (E) end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Windows 10 21H2 (E) reaches end of life on January 12, 2027. Plan your migration now — 156 days remaining.
📅 Get reminded before Windows 10 21H2 (E) reaches EOL on January 12, 2027 — alerts 90, 30 & 7 days out.
EOL Date
Jan 12, 2027
156 days remaining
Latest Release
10.0.19044
LTS release
Release Date
Nov 16, 2021
Windows 10 21H2 (E) series
Lifecycle detail
Windows 10-21h2-e-lts was released on November 16, 2021 and support is scheduled to end on January 12, 2027 — a planned supported lifespan of 5 years and 2 months, shorter than the 10 years and 2 months median for Windows LTS releases. It is a long-term support (LTS) release, so it carries a longer patch window than the interim releases around it.
Attack Surface
30/30 Critical tier
CISA KEV Exposure
20/20 Named in CISA KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Windows 10 21H2 (E) support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| XP SP3 |
5.1.2600 |
Apr 8, 2014 |
EOL |
| Vista SP2 |
6.0.6200 |
Apr 11, 2017 |
EOL |
| 7 SP1 |
6.1.7601 |
Jan 14, 2020 |
EOL |
| 8 |
6.2.9200 |
Jan 12, 2016 |
EOL |
| 8.1 |
6.3.9600 |
Jan 10, 2023 |
EOL |
| 10 1507 IOT |
10.0.10240 |
Nov 10, 2020 |
EOL |
| 10 1507 |
10.0.10240 |
May 9, 2017 |
EOL |
| 10 1507 (E) LTS |
10.0.10240 |
Oct 14, 2025 |
EOL |
What does Windows 10 21H2 (E) end of life mean?
When Windows 10 21H2 (E) reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Windows 10 21H2 (E) past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Windows 11 26H1 (E) or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Windows 10 21H2 (E) reach end of life?
Windows 10 21H2 (E) reached end of life on January 12, 2027. That is 156 days remaining.
Is Windows 10 21H2 (E) still supported?
Windows 10 21H2 (E) is still supported but approaching end of life on January 12, 2027. Begin planning your migration now.
What should I upgrade to from Windows 10 21H2 (E)?
The recommended upgrade from Windows 10 21H2 (E) is
Windows 11 26H1 (E) — the latest actively supported version. Check the
Windows full timeline for all supported versions.
What are the security risks of running Windows 10 21H2 (E) past EOL?
When Windows 10 21H2 (E) reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Windows should migrate immediately or implement compensating controls.