error while trying to install macOS Monterey
Why I cannot install macOS Monterey? When trying the I get this message: "This copy of the Install macOS Monterey application is damaged, and can't be used to install macOS.
MacBook Air 13″, macOS 10.14
Question marked as
It is telling you that there is a Monterey installer already present in the /Applications folder. You should be able to delete it, and then, try updating again. You may also want to update after first booting up your Mac in Safe Mode.
Ref: How to use safe mode on your Mac - Apple Support