If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

注意: 如果你有多个一次性购买的 Office，并且安装 Office 后在激活时遇到问题，请参阅更改 Office 产品密钥。 如果你遵循软件许可条款中的转移条款，你可以将 Office 移动到另一台计算机，但是必须通过电话将其激活，然后从原来的计算机上卸载 Office。

在开始之前，请确保你的 Windows 10 电脑支持蓝牙。 有关如何检查的详细信息，请参阅修复 Windows 10 中的蓝牙问题。 如果需要帮助添加没有蓝牙功能的设备，请参阅将设备添加到 Windows 10 电脑。 打开蓝牙. 检查你的 Windows 10 电脑是否支持蓝牙后，需要将其打开。

Press the Start button , and then enter store into the search bar.; Choose Microsoft Store from the results to open the app.; Select your account in the top-right corner of the screen, and then select Redeem code or gift cards.; Enter the 25-character code, select Next, and then follow the prompts.

Plug the USB end of the adapter into a USB charging port on your second display. If your display doesn't have a USB charging port, plug the USB end into any standard USB Type-A charger with 5W (5V/1A).

All Xbox digital codes are 25 characters long, include both numbers and letters, and are formatted in five blocks of five characters (xxxxx-xxxxx-xxxxx-xxxxx-xxxxx).

Note: If you start to play a DVD or VCD in the Player Library, the Player automatically switches to Now Playing mode. The Blu-ray Disc format is not supported in Windows Media Player. To play a Blu-ray Disc, you need to use a non-Microsoft program that supports Blu-ray playback and a device capable of reading Blu-ray Discs.

Microsoft サポートにお問い合わせください。一般的な問題の解決策を見つけるか、サポート エージェントからサポートを受けます。 ...

Microsoft 365 is a subscription service that makes sure you always have the most up-to-date modern productivity tools from Microsoft. There are Microsoft 365 plans for home and personal use, as well as for small and midsized businesses, large enterprises, schools, and non-profits.

Note: For info on how to move files to a new PC without needing a storage device, see Move files to a new Windows PC using OneDrive.OneDrive can securely store your files, so they’re backed up and protected in the cloud and accessible from any device—including your new PC.