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

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

If you think your Microsoft account has been hacked, find out how to secure your account and check for unauthorized activity.

You see the following error code and message when you launch a game or an app on your XBOX console:

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

A popular tactic of criminals is the "fake order" scam. The way it works is that you get a message, usually in email or text, that appears to be a routine confirmation for an order. Of course, you never ordered whatever product or service it's confirming. The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

Support for Windows 10 has ended on October 14, 2025. Learn more about your options for Windows 10.

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

Answers to questions on finding, getting, and applying product keys.

iOS Android To install Authenticator on your iOS device Scan the QR code or download and install Authenticator from the Apple app store.