Windows 11 26H1 (E) End of Life Date
Windows 11 26H1 (E) end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
Windows 11-26h1-e was released on February 10, 2026 and support is scheduled to end on March 13, 2029 — a planned supported lifespan of 3 years and 1 month, longer than the 2 years and 7 months median for Windows releases. It is not an LTS release; Windows reserves longer patch windows for its LTS versions.
| 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 11 26H1 (E) end of life mean?
When Windows 11 26H1 (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 11 26H1 (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.