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

How do I activate Office with a new product key? How do I activate Microsoft 365 or Office? Draft a first-time Office activation guide.

If your XBOX Wireless Controller didn't include AA batteries, register your controller and start a service order to get batteries.

Disc to digital licensing on XBOX is a new way to make many of your disc-based games easier to access wherever you play. When you use an eligible XBOX One or XBOX Series X game disc, Microsoft may grant a digital license associated with that disc. This allows you to access supported digital versions of the game without keeping the disc inserted while playing.

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 download and install Office, or you can renew your Microsoft 365 subscription. Having problems with your product key?

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

See how to install Project 2013 and 2016 and Project Pro for Office 365.

Review the warranty terms, check your warranty status, and learn about the protection plans for your Microsoft device or accessory.

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Learn how to set up your user account for multifactor authentication with Microsoft 365.