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 - and in the software-defined hybrid datacenter. For more information see the Windows Server Semi-Annual Channel overview. 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 2019 (Long-Term Servicing Channel)(Datacenter, Essentials, Multipoint Premium Server, 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 5/11/2020 Review note
Windows Server, version 1803 (Semi-Annual Channel) (Datacenter, Standard) 1803 17134.1.180410-1804 04/30/2018 11/12/2019 Review note
Windows Server, version 1709 (Semi-Annual Channel) 1709 16299.15 10/17/2017 04/09/2019 N/A
Windows Server 2016 (Long-Term Servicing Channel) 1607 14393.0 10/15/2016 01/11/2022 01/11/2027


Windows Server, version 1803, and Windows Server, version 1809, are governed by the Modern Lifecycle Policy. See the Windows Lifecycle FAQ and Windows Server Semi-Annual Channel overview for details regarding servicing requirements and other important information.