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

Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Some Office 2019, Office 2016, and Office 2013 products come with a product key. If yours did, before installing Microsoft 365 for the first time, sign in with an existing or new Microsoft account and enter your product key at office.com/setup. Redeeming your key is what links your account with Microsoft 365 so you only have to do this once.

Learn how to redeem a Microsoft/Xbox gift card or other code on your mobile device, Windows device, or Xbox console.

Cast to an external display from your Windows PC. You can wirelessly connect your PC to a TV, projector, or other kind of external display that supports Miracast. Turn on your TV, projector, or other display. If you're using a Miracast dongle or adapter, make sure it's plugged in to the display.

Here's some of the things you can do in the PC Health Check app in Windows: If you’re currently running Windows 10, PC Health Check provides a comprehensive eligibility check for your device to ensure it meets the Windows 11 minimum system requirements.

Virtualization lets your Windows device emulate a different operating system, like Android or Linux. Enabling virtualization gives you access to a larger library of apps to use and install on your device. If you upgraded your device from Windows 10 to Windows 11, these steps help you enable virtualization.

Contact Support. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option. Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

系统要求. 手机连接 体验从 Windows 电脑和 手机连接 开始。. 从电脑中，你可以使用预安装在设备上的连接至 Windows 应用或可从 Google Play 或 Samsung Galaxy Store 下载的连接至 Windows 连接到选择 Android、Samsung、HONOR、OPPO、ASUS 和vivo体设备。. 可以通过 Android 设备和电脑 ...

Administrar cuentas de correo electrónico en Outlook.com. Desbloquear mi cuenta de Outlook.com. Exploradores admitidos para Outlook en la Web y Outlook.com. Si inicias sesión con una cuenta profesional o educativa, lee Cómo iniciar sesión en Outlook en la Web.