Windows Server Core 1803 · Version Status
Windows Server Core 1803 End of Life Date
Windows Server Core 1803 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.
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Windows Server Core 1803 is past end of life. This version no longer receives security patches. 2552 days past EOL — migrate to a supported version immediately.
EOL Date
Nov 12, 2019
2552 days past EOL
Latest Release
10.0.17134
Standard release
Release Date
Apr 30, 2018
Windows Server Core 1803 series
Where these dates come from
End of lifeNov 12, 2019endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees End of active supportNov 12, 2019endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees ReleaseApr 30, 2018endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees Confidence: high = two or more independent sources agree (the vendor's page read by our adapter, a person's check against the vendor, the dataset the date came from); medium = one; low = the vendor page disagrees or our last read is stale.
How we source dates.
Lifecycle detail
Windows Server Core 1803 was released on April 30, 2018 and support ended on November 12, 2019 — 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 releases. It has been past its end-of-life date for 7 years. 4 newer Windows Server Core releases have shipped since.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in 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 Server Core 1803 support options
Some vendors and third parties sell security patches beyond end of life; whether one covers this version varies. Compare your options.
Compare Options →
All Windows Server Core Versions
| 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 1803 end of life mean?
When Windows Server Core 1803 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 1803 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.
Frequently Asked Questions
When does Windows Server Core 1803 reach end of life?
Windows Server Core 1803 reached end of life on November 12, 2019. This version is no longer receiving security patches.
Is Windows Server Core 1803 still supported?
No. Windows Server Core 1803 reached end of life on November 12, 2019 and is no longer receiving security patches.
What should I upgrade to from Windows Server Core 1803?
The recommended upgrade from Windows Server Core 1803 is
Windows Server Core 2025 — the latest actively supported version. Check the
Windows Server Core full timeline for all supported versions.
What are the security risks of running Windows Server Core 1803 past EOL?
Since Windows Server Core 1803 reached end of life, the maintainers no longer issue security patches. Any CVEs disclosed after the EOL date accumulate with no vendor fix. A CVE-based scan does not show this — it is the CVE blind spot; some scanners flag unsupported versions of common products, but coverage varies and none give the date in advance. Organizations running EOL Windows Server Core should migrate immediately or implement compensating controls.