By doing this, you do not need to maintain the product key anywhere. This is a simpler and safer way to activate a copy of Office. Instead, all you need to do is log in with the same Microsoft account you used when you purchased the license. If you have already purchased a license or just reinstalled Office on a new computer, you don't need any product keys. Option 1: Sign in to Activate Office with a Microsoft Account Option 4: Activate Office without Product Key.Option 3: Activate Office with Product Key.Option 2: Activate Office over the Internet.Follow the correct instructions according to your situation. This article shares several ways to activate Office on a Windows PC. We assume that you have an unlicensed copy of Microsoft Office installed on your computer.
You can activate Microsoft Office with a product key or a associated Microsoft account. When you start an Office app that's not activated, you'll be prompted to sign in to Office. How to Activate Microsoft Office for Free
