Windows 10 App Essentials 19.09.2, extending support for Version 1903 #addonrelease


Hi all,


Windows 10 App Essentials 19.09.2 is now available. This one builds on 19.09.1 by detecting upcoming Version 1909 on more computers.


Important notice regarding Version 1903 and 1909 support: typically a feature update is supported by this add-on for fifteen months or so. In case of Version 1903, support began in March 2019 and was scheduled to end  in July 2020. However, due to special circumstances regarding Version 1909 (codenamed 19H2), I’m extending support for 1903 until December 2020, at which point Version 1909 will also be retired (support for 1909 from this add-on began in August 2019).


Typically, a feature update for Windows 10 is a brand new Windows release. However, Version 1909 is considered a “service pack” or a minor feature update on top of Version 1903. Although it’ll carry a build number higher than 18362, system components still show 18362 as build number.


Because of this, for 1903 and 1909, a special exception will be granted in regards to support duration from Windows 10 App Essentials add-on, given that both are really the same version of Windows 10 with feature flags on (1909) or off (1903). This exception is applicable to stable releases, not to development releases which will continue to follow traditional support duration policy.



  • August 2019: Version 1909 support began.
  • July 2020: support for Version 1903 will be “removed” from development releases (essentially, all that will change is minimum Windows version flag).
  • Add-on 20.12.x (December 2020: last release to support Version 1903 and 1909.
  • January 2021: support for 1903 and 1909 will be removed from the add-on.




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