Windows Server End of Life Dates

Developers have been relying on server-oriented releases of the Windows NT operating system since 1993, when Microsoft first introduced the brand name Windows Server. This operating system has been continuously developed and maintained by Microsoft, with the first release being Windows NT 3, to provide a robust and reliable platform for server operations. The primary purpose of Windows Server is to provide a secure and efficient way to manage and deploy server applications, making it an essential tool for developers who need to ensure the smooth operation of their server infrastructure.

The end-of-life landscape for Windows Server is complex, with a total of 20 versions released to date. Out of these, 16 versions have already reached their end-of-life, leaving 4 active versions that are still supported by Microsoft. The latest stable version of Windows Server is 10.0.14393, and developers should be aware that version 2016 is next in line to expire, with its end-of-life date set for January 12, 2027. The most recent version to reach its end-of-life was 23h2-ac, which expired on October 24, 2025. This highlights the importance of keeping track of the lifecycle of each version to ensure that developers can plan and prepare for upgrades and migrations.

Given that there are currently no known Common Vulnerabilities and Exposures (CVEs) tracked for Windows Server, the security picture appears to be favorable. With zero critical CVEs and no most affected version, developers can have confidence in the security of their Windows Server deployments. Since there are no known vulnerabilities, the Known Exploited Vulnerabilities (KEV) status is not applicable. Nevertheless, developers should still take proactive measures to ensure the security of their server infrastructure, such as regularly reviewing and updating their systems to the latest versions and applying security patches as soon as they become available.