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.

On the Change your password page, enter your current password and then enter your new password. For additional security, select the optional checkbox which prompts you to update your password every 72 days.

Most tools and options in Microsoft Edge are available when you select Settings and more > Settings.

如果我的设备上没有管理员权限，该怎么办？ 若要完全升级到新的 Microsoft Edge，必须使用管理员帐户登录到设备。

Sign in to account.microsoft.com, then select Order History on your Rewards page.

Using Authenticator as a way to sign in. If you have turned on passwordless, two-step, or multi-factor authentication for your account, use the following steps to sign-in:

培训：PowerPoint 演示者视图显示当前幻灯片、下一张幻灯片和演讲者备注，以帮助你在演示和与受众联系时集中注意力。 观看本视频了解如何操作。

Descubre cómo enviar una solicitud para obtener el reembolso de una compra de contenido digital de Xbox.

Most email apps like Outlook are able to automatically configure email server settings. If you need server settings or help finding your server settings, click on one of the links below:

How to use the SUMIFS function in Excel, one of Excel’s math and trig functions, to add arguments that meet multiple criteria.