https://wccftech.com/windows-10-cumulative-update-for-september-2020/

Microsoft has released this month's Windows 10 cumulative updates for several versions of the operating system, including Windows 10 November 2019 Update (version 1909), May 2019 Update (version 1903), and October 2018 Update (version 1809).

Today's Patch Tuesday updates bring a number of improvements and bug fixes to Windows 10. Microsoft had released a preview of these updates at the end of last month, giving it some time to test these Windows 10 cumulative updates. But Patch Tuesday Windows 10 cumulative update also adds security fixes to the mix, making these mandatory, non-optional updates.