Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

Step 2: In the Sign in to set up Office window, select I don't want to sign in or create an account (it's a small link at the bottom of the window). Step 3: Enter your Office product key, without …

Sometimes when you run the Activation troubleshooter or try to activate, the error code and message will change. If the error code has changed, look up the new code below and follow …

Learn how to redeem a gift card, code, or Office product key and spend your balance at Microsoft Store online, on Windows, or Xbox.

Use your Microsoft account , not your product key, to install and activate Office and individually purchased Microsoft 365 apps, such as Project, Visio, Word, Excel, and Outlook.

Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.

Learn how to activate Windows using an internet connection, automated system, or live support advocate.

Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

Activation codes are often linked to a specific hardware configuration or user account. They verify that you have a valid license to use the software. In summary, a product key is used during …