Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

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

Pruebe estas soluciones si no puede iniciar sesión en su cuenta de correo electrónico de Outlook.com, Hotmail, Live o MSN, o si no está seguro de cómo iniciar o cerrar sesión.

If you’re working on a Windows PC and want the apps and content from another device to show on your PC screen, you’ll want to consider mirroring that device‘s screen or projecting it to your PC.

Learn how to create installation media for installing or reinstalling Windows 7, Windows 8.1, or Windows 10.

If you’re having sound or audio problems, the following suggestions might help. The tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn’t.

When you check Outlook Desktop for the Teams Meeting Add-in by going to File > Options > Add-ins, then select Go next to COM Add-ins, the Teams Meeting Add-in is missing.

然后，代理人将对方的邮箱添加到其自己的配置文件。 之后，代理人可以代表其他人发送电子邮件。

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Update Surface devices and Windows. Download the latest drivers and firmware updates to keep your Surface devices performing their best.