The key follows a specific five-by-five format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX . It acts as a "redemption key" rather than a permanent license. Once entered, the key is permanently linked to your . After this initial setup, you no longer need the physical key; you simply sign in with your email and password to activate Office on any compatible device. Where to Find Your Product Key
There are two types of product keys for Office 365:
To activate Office 365 with your product key:
If your product key doesn't work, try the following:
To ensure that you can continue to use Microsoft Office 365 without any issues, follow these best practices: