In case you are prompted to enter the license number to activate your Office, while you are reinstalling it on your current computer or other PC devices.ĭon't hurry to buy another activation key, even if you lost your Microsoft Office product key, try the methods below to find it out. Here in this article will show you how to find out your Office product key from your computer after installation.īefore doing a clean install of Windows, or upgrading to Windows 10 from Windows 7/8/8.1, it is a good idea to find out and save your office product key to a safe location. How to find your Office Product Key after installation on computer