Cast to a display from a 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.

In early 2024, National Public Data, an online background check and fraud prevention service, experienced a significant data breach. This breach allegedly exposed up to 2.9 billion records with highly sensitive personal data of up to 170M people in the US, UK, and Canada (Bloomberg Law).

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.

If you've received a message that's encrypted, learn how to View and reply to encrypted messages in Outlook. Encrypt a message with Microsoft 365 Message Encryption. New Outlook supports Microsoft 365 Message Encryption as long as your email server has an Office 365 Enterprise E3 license.

For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn. For Microsoft 365 Germany go to portal.office.de. This completes the download of Microsoft 365 to your device. To complete the installation, follow the prompts in the "Install Microsoft 365" section below.

Help for admins of small businesses. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Check the Xbox services, games, and apps for any service outages.

Chat or receive a call back from a technical support expert: If you have a Microsoft 365 Basic, Microsoft 365 Personal, or Microsoft 365 Family subscription, get questions answered from anywhere via chat or request to receive a call back from one of our technical support experts.

If you're looking for product keys for Office, apps, games, and more, see Find your Microsoft downloads and product keys. Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

首先尝试执行以下操作来帮助你解决连接问题或缩小该问题的范围。. 检查以太网电缆和连接。. 确保以太网电缆已安全地插入路由器和 Windows 11 电脑的以太网端口。. 在路由器上，确保以太网电缆已插入正确的以太网端口，而 不是 用于连接调制解调器和路由器 ...