Avoid Windows 11 Regedit

 Only one of my PCs qualify for Windows 11

. . . And MS is not pushing 11 on you anyway

. . . . . But just in case.

1. Select Start.
2. Type regedit.exe.
3. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
   1. If keys do not exist, create them by right-clicking on the previous key and selecting New > Key from the context menu.
4. Right-click on WindowsUpdate and select New > Dword (32-bit) Value.
   1. Name it TargetReleaseVersion.
   2. Double-click on the new Dword and set it to 1.
5. Right-click on WindowsUpdate and select New > String Value.
   1. Name it TargetReleaseVersionInfo.
   2. Double-click on the new String and set it to 21H1. (or 21H2 if you like)
6. Restart the PC.