If you are still using Windows 7 or 8.1 in 2024, you have bigger problems than activation (security patches ended years ago).
While Removewat 2.2.9 is technically effective on old, unpatched versions of Windows 7, If you are still using Windows 7 or 8
The Truth About Removewat 2.2.9: Is This Windows Activator a Savior or a Spy? unpatched versions of Windows 7