Learn how to use passkeys, a replacement for your password, to sign into your Microsoft account using your face, fingerprint, or PIN. Passkeys are supported on desktop and mobile browsers and devices, and help protect you against phishing attacks.

Learn how to use Microsoft Authenticator to sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless. Follow the steps to send a notification, approve a request, or enter a code on another device.

Learn how to switch out of S mode in Windows 10 or Windows 11 Home edition to install apps from outside of the Microsoft Store or to upgrade to Windows 11. S mode is designed for security and performance, but it is not available in Windows 11 Pro, Enterprise, or Education editions.

Learn how to cancel an Xbox subscription and check for refund eligibility in different markets. Find out the terms and conditions, troubleshooting tips, and contact information for Microsoft Services Agreement and Store Terms of Sale.

Find out how to fix common issues with signing into your Microsoft account, such as password reset, verification codes, username problems, and more. Use the Sign-in Helper tool to check and solve your account details.

Learn how to view and manage the recent sign-in activity for your Microsoft account on the Recent activity page. Find out how to change your password, update security settings, and contact support if you need help.

Learn how to add, remove, or change an email alias in Outlook.com, which is an additional email address that uses the same inbox, contact list, and account settings as your primary email address. Find out the limitations and benefits of using aliases, and how to send email from a different alias.

Learn how to diagnose and fix errors in your Outlook mail profile that might prevent you from working offline. Follow the steps to use the built-in Repair option in Outlook 2016 or download the Microsoft Support and Recovery Assistant tool.

Learn how to chat with SMS participants in supported countries, link your Android to Teams, and use commands and limits of SMS group chat. Find out how to import, delete, and export your SMS chats on Microsoft Teams (free).

Learn how to register your phone number for SMS sign-in, a phone verification method that allows you to access your organization's services. Find out how to enable, disable, or delete SMS sign-in, and what to do when you have a new or existing number.