Tips: While signing in, select Yes at the "Stay signed in?" prompt if you want to go straight to your mailbox next time (not recommended for shared computers). Alternatively, check the "Don't show this again" box and select No to be prompted for your password each time.. If you can't sign in, or have forgotten your username or password, use our sign-in troubleshooter.

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.

Tip: If you encounter a problem on your Windows device, pressing the Windows logo key + F takes a screenshot, then opens the Feedback Hub app and automatically uploads the screenshot to the Feedback tab. Follow the on-screen instructions to detail the problem you've encountered.

If your screen only has a Mini DisplayPort, you can set up the following connections—connect a USB-C to HDMI adapter to an HDMI cable then to an HDMI to Mini DisplayPort and then to your external screen. Keep in mind that the more adapters used, the more degraded the signal may get.

Buy stuff from Microsoft Store online (from your mobile device, on Xbox One, in the Microsoft Store app on your Windows 10/11 or Windows 8.1 device, or via the web).

Learn about channels in Microsoft Teams. Standard channels are available to all team members in Teams. Most channels are standard channels. If you need a smaller, specific audience for a particular subject, you can use a private channel. Shared channels are for collaborating with people inside and outside your team or organization.

Get help with your questions about Microsoft Teams from our how-to articles, tutorials, and support content.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

使用 Microsoft Forms ，可以在 Microsoft Teams 秒内创建即时实时轮询。 在 Teams 频道中发布投票，或在聊天窗格中快速收集反馈。

频道是在 Teams 中协作的最佳位置，我们引入了一些更改，使你和你的团队成员更容易协同工作。 新的频道体验提供了一种有条理的透明方式来共享内容和进行引人入胜的对话。