Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

We’re making some changes to Windows and Microsoft 365 that will impact Cortana users. Cortana voice assistance in Windows as a standalone app was retired in the spring of 2023.

Find out what model of Surface you're using. There are several ways to find out which Surface device model you have. Look in the Surface app

If you can't remember your account name, use these steps to try to get back into your Microsoft account.

In new Outlook you can grant anyone within your organization editor or delegate access to your calendar. What's the difference between edit permissions and delegate permissions?

PowerPoint Viewer, a free download from Microsoft.com, enables viewing of PowerPoint presentations on computers that do not have PowerPoint installed.

To access your Xbox profile and other Microsoft services, you need to know the email address and password you used to set up your Microsoft account.

How to create, edit, and run Excel macros to automate data entry and tasks.

Find out how to manage your Xbox subscriptions to request a refund or cancel a recurring payment.

Need help with an Xbox console, an Xbox game, or Xbox network? Find out how to get in touch with us.