排查Windows 媒体播放器错误 - Microsoft 支持
如果遇到特定文件类型的错误，则可能是编解码器缺失或过时。 若要解决此问题，请执行以下操作： 检查文件属性： 确保电脑上有正确的编解码器来播放媒体文件。 若要检查文件格式和编解码器信息，请右键单击媒体文件，选择“属性”，然后转到“详细信息”选项卡。
Office Help & Training
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OneDrive release notes - Microsoft Support
Updated Files On-Demand settings on Windows.We are updating the OneDrive sync app advanced settings for Files On-Demand for users who have the feature enabled.
Applies To:
OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint in Microsoft 365, Microsoft 365 admin, OneDrive (work or school), OneDrive (work or school) operated by 21Vianet, OneDrive for Mac, OneDrive for Windows, SharePoint admin center, SharePoint in Microsoft 365 Small Business, SharePoint operated by 21Vianet
Xbox Status | Xbox Support
Check the Xbox services, games, and apps for any service outages.
Returning items you bought from Microsoft for exchange or refund
Digital goods like apps, games, add-on content, subscriptions, movies, TV shows, and books aren't returnable unless the offer for applicable law states that you're eligible for a refund.
Applies To:
Microsoft account dashboard
Protect yourself from phishing - Microsoft Support
Mismatched email domains- If the email claims to be from a reputable company, like Microsoft or your bank, but the email is being sent from another email domain like Gmail.com, or microsoftsupport.ru it's probably a scam.Also be watchful for very subtle misspellings of the legitimate domain name. Like micros0ft.com where the second "o" has been replaced by a 0, or rnicrosoft.com, where the "m ...
GroupMe help & learning
Where your best groups chat. GroupMe is the easy way to connect with all the groups in your life, big and small. With apps on iOS, Android, and Web, GroupMe keeps you connected with the people most important to you.
Office Help & Training
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管理应用中应用的后台Windows - Microsoft 支持
在该应用的设置页上，更改"允许 此应用在后台运行"的设置。下面是每个选项的摘要： 始终为 。始终允许应用在后台运行（接收信息、发送通知和保持最新状态，即使你未主动使用它）。
Microsoft Support
Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.