Select Review activity to check for any unusual sign-in attempts on the Recent activity page.If you see account activity that you're sure wasn't yours, let us know and we can help secure your account—if it's in the Unusual activity section, you can expand the activity and select This wasn't me.If it's in the Recent activity section, you can expand the activity and select Secure your account.

锂电池随着时间的推移而磨损，这可能导致电池只要是新电池就不能保持充电。 始终将电池充电至 100% 可能会导致电池变坏得 ...

HDR content on Windows offers better brightness and color capabilities compared to traditional content (sometimes called standard dynamic range [SDR] content).

Under My Files, pick a file or folder by selecting the circle in the upper corner of the item, and then select a command at the top of the page.

If you want to make a different console your home Xbox: Press the Xbox button on your controller to open the guide.; Select Profile & system > Settings > General > Personalization, and then select My home Xbox.; Do either of the following to change the status of your console: To make this your home Xbox, select Make this my home Xbox.; To remove this console as your home Xbox, select Make this ...

Download and install Skype for Business on your PC. Sign in to and out of Skype for Business. Set up an audio device for Skype for Business. Set up and troubleshoot Skype for Business video

检查 Xbox 服务、游戏和应用是否有任何服务中断。

Active content is additional functionality in a file or program, such as macros, add-ins, or data connections. This article lists types of active content that can be blocked by settings in Trust Center and which, when present in a document, cause display of the Message Bar when you open your file.

Add participants to an existing group chat. You may only add external access participants to existing or ongoing chats that already include at least one external access participant.

了解如何升级Windows 10 家庭版Windows 10 专业版访问更高级的安全性和网络功能。