The user account name on a Windows device shows the name of the signed-in Microsoft account or work/school account. To change which user is signed in, select the Start button on the taskbar. Then select the account name icon or picture to see a list of users you can switch to.

Learn how to manage your Microsoft devices. Add, remove, register, or rename a device on your Microsoft account.

Learn about what effect closing a Microsoft account might have on your other apps and services.

Compose a message now, but schedule it to be sent later.

Learn how to reinstall Windows on your PC and how activation works after it's installed.

This article is for Outlook.com. If you're using Outlook for Windows, see Fixes or workarounds for recent issues in Outlook for Windows.. If you're having problems accessing Outlook.com, you can see the status of Microsoft Office Online Services at the Service Health portal.. If you're having problems sending or receiving email, read how to Fix Outlook.com email sync issues.

Learn how to change your Windows desktop background (wallpaper) and accent color using personalization settings.

Use OneDrive as a cloud backup to share your files and folders with others. Learn how to control permissions, allow editing, or set expiration dates.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn about getting started with the new Microsoft Defender on your personal devices including Windows, Mac, Android, and iOS.