Windows Server Core End of Life (EOL) Dates & Support Timeline
Complete end-of-life dates, support windows, and security status for all Windows Server Core versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
Windows Server Core 2025 is supported until November 14, 2034, its end-of-support date. Active support for Windows Server Core 2025 ends on October 9, 2029; security fixes continue until that end-of-life date. The next Windows Server Core version to reach end of life is 2016, on January 12, 2027. 12 of 16 tracked Windows Server Core versions are past end of life; the most recent to reach it, 2012-R2, did so on October 10, 2023. The full Windows Server Core lifecycle, with every version's release and end-of-support date, is in the table below.
Running an EOL version? Get matched with support options — free ↓| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 2008-SP2 LTS | 6.0.6003 | Apr 29, 2009 | Jan 14, 2020 | 2445 days past EOL | EOL |
| 2008-R2-SP1 LTS | 6.1.7601 | Feb 22, 2011 | Jan 14, 2020 | 2445 days past EOL | EOL |
| 2012 LTS | 6.2.9200 | Oct 30, 2012 | Oct 10, 2023 | 1080 days past EOL | EOL |
| 2012-R2 LTS | 6.3.9600 | Nov 25, 2013 | Oct 10, 2023 | 1080 days past EOL | EOL |
| 2016 LTS | 10.0.14393 | Oct 15, 2016 | Jan 12, 2027 | 110 days remaining | Warning |
| 1607 | 10.0.14393 | Oct 15, 2016 | Jan 11, 2022 | 1717 days past EOL | EOL |
| 1709 | 10.0.16299 | Oct 17, 2017 | Apr 9, 2019 | 2725 days past EOL | EOL |
| 1803 | 10.0.17134 | Apr 30, 2018 | Nov 12, 2019 | 2508 days past EOL | EOL |
| 2019 LTS | 10.0.17763 | Nov 13, 2018 | Jan 9, 2029 | 838 days remaining | Active |
| 1809 | 10.0.17763 | Nov 13, 2018 | Nov 10, 2020 | 2144 days past EOL | EOL |
| 1903 | 10.0.18362 | May 21, 2019 | Dec 8, 2020 | 2116 days past EOL | EOL |
| 1909 | 10.0.18363 | Nov 12, 2019 | May 11, 2021 | 1962 days past EOL | EOL |
| 2004 | 10.0.19041 | May 27, 2020 | Dec 14, 2021 | 1745 days past EOL | EOL |
| 20H2 | 10.0.19042 | Oct 20, 2020 | Aug 9, 2022 | 1507 days past EOL | EOL |
| 2022 LTS | 10.0.20348 | Aug 18, 2021 | Oct 14, 2031 | 1846 days remaining | Active |
| 2025 LTS | 10.0.26100 | Nov 1, 2024 | Nov 14, 2034 | 2973 days remaining | Active |
Live EOL badge for your README — updates automatically at every build.
[](https://endoflife.ai/windows-server-core)
Windows Server Core release and support pattern
8 of the 16 tracked lines are designated long-term support, which is where the longer windows sit.
Of the 16 release lines tracked, 12 are past end of life and 4 are still within support. The newest line, 2025, was released November 1, 2024. The next scheduled end of life is 2016 on January 12, 2027 — 110 days from this build. The longest-supported line currently published is 2025, to November 14, 2034.
Computed from the tracked release data at every build — the figures above are the dates in the table, restated, not an editorial estimate.
What does Windows Server Core end of life mean for your organization?
When a version of Windows Server Core reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: A CVE-based scan does not show the accumulation of unpatched vulnerabilities in EOL software. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no vendor patch is coming. This is one of the most dangerous gaps in enterprise security posture.
Organizations running EOL Windows Server Core should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
Your options when Windows Server Core reaches end of life
There are four realistic paths. Which one is right depends far more on how long the system needs to keep running than on the version you are on today.
| Option | Best when | Watch out for |
|---|---|---|
| Move to a supported version | The system will outlive the current version's support window and you can schedule the work | Budget for compatibility testing, not just the upgrade itself — that is where the real cost sits |
| Replace the component | The project is unmaintained, or a better-supported alternative exists | The replacement has its own lifecycle and its own end-of-life date — you are changing vendors, not escaping the problem |
| Buy extended support | Migration is genuinely underway but cannot finish before the deadline, or the workload is frozen by certification or a third-party application | A bridge, not a destination — every year purchased is a year the migration still has to happen |
| Document accepted risk | The system is isolated, short-lived, or scheduled for retirement | Only defensible with real compensating controls and a written decision — auditors treat undocumented end-of-life software as a finding |
How to choose, in one question: how many more years does this system need to run? Under a year, extended support (where it exists) is usually cheaper than an emergency migration. One to three years, migrate — support purchased repeatedly costs more than doing the project once, and the project only gets harder as the version ages. Indefinitely, migrate now and plan the next migration before it surprises you.
Worth saying plainly, because vendors selling extended support rarely will: extended support is often the more expensive choice over a multi-year horizon. It is the right answer when a deadline is genuinely unreachable, not as a default. Compare the annual fee against the one-time cost of migrating before committing to either.
Formalizing decisions like this across your estate? Our free EOL policy template is a ready-to-adopt policy with risk tiers, remediation SLAs, and audit mapping — no signup, free to use and share.
Extended Support Options
If you cannot migrate immediately, extended support vendors provide continued security patches for EOL Windows Server Core versions. This is a bridge, not a permanent solution — plan your migration in parallel.
Windows Server Core has 12 versions past end of life — security patches have stopped, but CVE disclosures haven't. Extended support past the official date exists for many products in this position — whether it exists for Windows Server Core is exactly what we check. Tell us where to reach you and we'll reply with matched options and pricing guidance — or an honest "no vendor covers this."