Get more information about managing your Xbox subscriptions, issues with billing, and more.

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

Learn about errors 90-80153A00, 90-80153903, 90-80153904, and 90-80153908 and what you need to do if you see one of them while trying to download an update.

从屏幕右边缘滑入，然后点击“搜索”。 如果你使用的是鼠标，请指向屏幕右下角，然后单击“搜索”。在 “搜索 ”框中键入“命令提示符”，右键单击“ 命令提示符”，然后单击“ 以管理员身份运行”。如果系统提示你输入管理员密码或进行确认，则键入密码或单击“允许”。

Windows 11, version 23H2 ; July 25, 2024—KB5040527 (OS Builds 22621.3958 and 22631.3958) Preview; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)

The Windows 10 free upgrade offer ended on July 29, 2016. To upgrade to Windows 10, you will need to have a compatible PC and purchase a full version of the software.We recommend that you don’t install Windows 10 on an older device, as some Windows 7 devices are not compatible with Windows 10 or could experience reduced feature availability.

Smart App Control adds significant protection from new and emerging threats by blocking apps that are malicious or untrusted. Smart App Control also helps to block potentially unwanted apps, which are apps that may cause your device to run slowly, display unexpected ads, offer extra software you didn't want, or do other things you don't expect.

Sometimes you need to find a file someone has shared with you. Files can be shared using the sharing dialog, attaching a file or sharable link in email, sending a link in Teams, or other experiences.

Upload captions and transcripts Upload your own WebVTT captions and transcript file by selecting Video settings in the upper right of the web player.Expand the Transcripts and captions section if closed, then select Upload.In the dialog that appears, select the language of the file you’re uploading.

仅当具有 Microsoft 365 订阅时，此功能才可用。 如果你是 Microsoft 365 订阅者，请确保拥有最新版本的 Office。 要以副本或 PDF 形式发送演示文稿，请选择“共享”。