Windows 10 build 18947 (rs prerelease)

Windows 10 build 18947 is a build of the "20H1" update for Windows 10. It was accidentally released by Microsoft on 2019-07-24 to Windows Insiders on all three rings for both the x86 and x64 architecture. The moderator of the Microsoft Community published instructions of how to rollback from build 18947 on 2019-07-25.