Windows Server Semi-Annual Channel

Windows Server Semi-Annual Channel follows the Modern Lifecycle Policy.

This applies to the following editions: Datacenter, Standard

Support dates are shown in the Pacific Time Zone (PT) - Redmond, WA, USA.

Support Dates

Listing Start Date Retirement Date
Windows Server Semi-Annual Channel 2017-10-17T00:00:00.000-08:00 2022-08-09T22:59:59.999-08:00


Version Start Date End Date
Version 20H2 2020-10-20T00:00:00.000-08:00 2022-08-09T22:59:59.999-08:00
Version 2004 2020-05-27T00:00:00.000-08:00 2021-12-14T22:59:59.999-08:00
Version 1909 2019-11-12T00:00:00.000-08:00 2021-05-11T22:59:59.999-08:00
Version 1903 2019-05-21T00:00:00.000-08:00 2020-12-08T22:59:59.999-08:00
Version 1809 2018-10-02T00:00:00.000-08:00 2020-11-10T22:59:59.999-08:00
Version 1803 2018-04-30T00:00:00.000-08:00 2019-11-12T22:59:59.999-08:00
Version 1709 2017-10-17T00:00:00.000-08:00 2019-04-09T22:59:59.999-08:00


Containers released with the Windows Server versions listed above follow the same Lifecycle dates. Navigate to the base image servicing page at Windows container base image servicing lifecycles for more details.


Windows Server, version 1809 was re-released on November 13, 2018. Support dates have been adjusted accordingly.


Beginning in September 2023, Windows Server has two primary release channels available: the Long-Term Servicing Channel (LTSC) and the Annual Channel (AC). The Long-Term Servicing Channel provides a longer-term option focusing on stability, whereas the Annual Channel provides more frequent releases.


  • Datacenter
  • Standard