Windows Server Core 2004 End of Life Date
Windows Server Core 2004 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
Windows Server Core 2004 was released on May 27, 2020 and support ended on December 14, 2021 — a supported lifespan of 1 year and 7 months, shorter than the 8 years and 11 months median for Windows Server Core releases. It was not an LTS release; Windows Server Core reserves longer patch windows for its LTS versions. It has been without security patches for 4 years and 9 months. 1 newer Windows Server Core release has shipped since.
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →| Version | Latest | EOL Date | Status |
|---|---|---|---|
| 2008-SP2 LTS | 6.0.6003 | Jan 14, 2020 | EOL |
| 2008-R2-SP1 LTS | 6.1.7601 | Jan 14, 2020 | EOL |
| 2012 LTS | 6.2.9200 | Oct 10, 2023 | EOL |
| 2012-R2 LTS | 6.3.9600 | Oct 10, 2023 | EOL |
| 2016 LTS | 10.0.14393 | Jan 12, 2027 | Warning |
| 1607 | 10.0.14393 | Jan 11, 2022 | EOL |
| 1709 | 10.0.16299 | Apr 9, 2019 | EOL |
| 1803 | 10.0.17134 | Nov 12, 2019 | EOL |
What does Windows Server Core 2004 end of life mean?
When Windows Server Core 2004 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: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Windows Server Core 2004 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Windows Server Core 2025 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.