You weren't able to find your username. If the username lookup wasn't successful, try looking for your Microsoft account username within other products or services that you know are associated with that account.

To open the Start menu—which contains all your apps, settings, and files—you can do any of the following: On the center or left end of the taskbar, select the Start icon.

Note: To upgrade to Windows 11, devices should meet the Windows 11 minimum system requirements.Some Windows 10 features aren't available in Windows 11. System requirements to experience some Windows 11 features and apps will exceed the Windows 11 minimum system requirements.Find Windows 11 specs, features, and computer requirements

Locking your Windows device allows you to quickly secure your device while keeping your applications and files open in the background. When you lock your device, anyone trying to access it must enter your password, PIN, or use biometric authentication if you have Windows Hello set up.

Important: If, for example, you cancel a Microsoft 365 Basic, Personal, or Family subscription, your storage allowance will revert to 5GB of cloud storage, which includes your OneDrive and Outlook.com attachments, and 15GB of Outlook.com storage. If you cancel Microsoft 365 Family, all the people you shared your subscription with will also have their storage allowances reduced.

After you update a drop-down list, make sure it works the way you want. For example, check to see how to Change the column width and row height to show your updated entries. If the list of entries for your drop-down list is on another worksheet and you want to prevent users from seeing it or making changes, consider hiding and protecting that worksheet.

Get started with Microsoft Teams (free). Explore your options, find out what’s new, browse help topics, and more.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Windows Hello is a more personal and secure way to sign in to your Windows device. Instead of using a password, with Windows Hello you can sign in using facial recognition, fingerprint, or a PIN.