A product key is a unique 25-character code that is used to activate Microsoft Office 2007. It is important to have your product key handy in case you need to reinstall Office or transfer it to a new computer. There are a few different ways to check your Office 2007 product key.
One way to check your product key is to look for the Certificate of Authenticity (COA) sticker that came with your copy of Office. The COA sticker is usually located on the back of the computer case or on the inside of the laptop battery compartment. The product key is printed on the COA sticker.