Have a legitimate copy of Office 2007 and just need to reinstall? Check your Microsoft Account "Order History" if you ever registered it digitally. For everyone else, stay safe—and stay updated.
: You must have a valid 25-character product key. If you still have it installed on an old machine, you can find the Product ID (though not the full key) in the Word Options > Resources Integration with Google Drive office 2007 iso google drive