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 use virus and threat protection options in Windows Security to scan your device for threats and view the results.

Get help for the account you use with Microsoft and learn how to set up, protect and manage your services and subscriptions.

Learn how to find or fix a device in your Microsoft account.

Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.

有关如何更改 Microsoft 帐户上的名称的说明。

How to enable automatic forwarding in new Outlook. At the top of the page, select Settings .

Learn how to open, navigate, and troubleshoot File Explorer in Windows, with answers to common questions and support assistance.

Learn how to redeem a gift card, code, or Office product key and spend your balance at Microsoft Store online, on Windows, or Xbox.

Learn how to concatenate text strings in Excel using the CONCATENATE function. Our step-by-step guide makes it easy to join two or more text strings into one.