Windows Server release information

Microsoft has updated its servicing model. The Semi-Annual Channel is a twice-per-year feature update release with 18-month servicing timelines for each release. This page is designed to help you determine the end of support date for the Semi-Annual Channel releases.

The Semi-Annual Channel provides opportunity for customers who are innovating quickly to take advantage of new operating system capabilities at a faster pace, both in applications - particularly those built on containers and microservices. For more information see the Comparison of servicing channels. Customers also have the option to continue using the Long-Term Servicing Channel releases, which continue to be released every 2-3 years. Each Long-Term Servicing Channel release is supported for 5 years of mainstream support and 5 years of extended support.

Windows Server current versions by servicing option

Windows Server release Version OS Build Availability Mainstream support end date Extended support end date
Windows Server, version 1909 (Semi-Annual Channel) (Datacenter Core, Standard Core) 1909 18363.418.191007-0143 11/12/2019 05/11/2021 Review note
Windows Server, version 1903 (Semi-Annual Channel) (Datacenter Core, Standard Core) 1903 18362.30.190401-1528 5/21/2019 12/08/2020 Review note
Windows Server 2019 (Long-Term Servicing Channel) (Datacenter, Essentials, Standard) 1809 17763.107.1010129-1455 11/13/2018 01/09/2024 01/09/2029
Windows Server, version 1809 (Semi-Annual Channel) (Datacenter Core, Standard Core) 1809 17763.107.1010129-1455 11/13/2018 5/12/2020 Review note
Windows Server 2016 (Long-Term Servicing Channel) 1607 14393.0 10/15/2016 01/11/2022 01/11/2027


Windows Server, version 1803 and later are governed by the Modern Lifecycle Policy. See the Windows Lifecycle FAQ and Comparison of servicing channels for details regarding servicing requirements and other important information.