Servicing stack update for Windows 10, version 1903 and 1909: September
https://support.microsoft.com/en-us/topic/servicing-stack-update-for-windows-10-version-1903-and-1909-september-8-2020-a97fb56a-1bb1-e2d8-82af-aa7f47316332
WebServicing stack update for Windows 10, version 1903 and 1909: September 8, 2020 - Microsoft Support. Windows 10, version 1903, all editions Windows 10, version 1909, all editions. Applies to. Summary. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
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