Windows Hello. Windows Hello lets you sign in to your devices, apps, online services, and networks using your face, iris, fingerprint, or a PIN. Even if your Windows device can use Windows Hello biometrics, you don’t have to. If it’s the right choice for you, you can rest assured that the info that identifies your face, iris, or fingerprint ...

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.

If you can't sign in to your Outlook.com, Hotmail, Live, or MSN email account, or you're not sure how to sign in or sign out, here are some solutions.

请按照以下步骤重置你的 Microsoft 帐户密码。. 当你尝试登录帐户时，或者当你在 Windows 10 上启动或安装游戏时，可看到以下错误代码：. 0x800704CF. 这意味着存在暂时性的网络问题。.

To redeem a Microsoft gift card, Xbox download code or token, select Redeem code below, sign in, and enter or paste the code or token value. Redeem Code. Tip: If you bought the wrong code, please contact the retailer.

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

If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key.

如果你仍无法进行购买，请使用该页面右侧的“联系我们”按钮获取帮助。. “此方式无效。. 请与你的银行联系，以获取详细信息”. 如果你在尝试为购买付款时看到付款方式错误，请尝试使用其他付款方式。. 下面说明了如何更新支付选项：. 登录到要更新的 ...

PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC. How to open PC Health Check. In Windows, use Search on the taskbar to ...

If you run into problems trying to connect to a Bluetooth device, here are some troubleshooting steps to try. Note: For general info about how to connect a Bluetooth device to your PC, see Pair a Bluetooth device in Windows.