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

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

However, if a product key is required, it can usually be found in the confirmation email you received after purchasing Windows, or in the box Windows came in. Microsoft doesn't keep a …

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can …

Learn how to find your product key for Office 2010 or locate a lost Microsoft Office 2010 product key.

Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead.

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

Locate the Microsoft 365 one-time purchase or individual Microsoft 365 app, and then select Install Microsoft 365 to view your product key (this doesn't actually install Microsoft 365).

You can find the product key in one of the following locations: Sticker on the CD case or other packaging. Certificate of Authenticity. Confirmation email message received from an online …

Get your product key. If you used a product key to get to Windows 11, then you’ll need that key again after the hardware change. To find out how to locate your key, see Find your Windows …