macOS "Verifying Microsoft [Excel/Word/Powerpoint].app" over and over again
Press Command + Space and type terminal and press enter .
Then type these commands :
sudo chmod -R 755 /path/to/app

To find path of your app just simply drag the app to terminal .
Press enter and run this command too .
sudo xattr -dr com.apple.quarantine /path/to/app

Press enter .