Microsoft rolled out cumulative updates for Windows 10 on last Tuesday but now it seems some users weren't able to install these successfully and were instead stuck with a looping uninstaller.
Windows 11 in the Dev Channel fixes Windows Security app issues, and more
windows 11 insider preview
Build 22621.290 & build 22622.290
Microsoft releases two Windows 11 builds to Insiders in the Beta Channel
windows 11 build 22622.290 screenshots