Learn about Teams, SharePoint and OneDrive, and what to use when, for team collaboration and file storage.

Learn how to use Feedback Hub to report problems or send suggestions to Microsoft.

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

Find out how to change privacy settings for your camera and microphone in Windows.

了解如何在电脑上重新安装 Windows，以及安装 Windows 后激活的工作原理。

Use wildcard characters as comparison criteria for text filters, and when you're searching and replacing content. This feature enables you to find values that share a simple pattern. These characters can be the asterisk (*), the question mark (?), and the tilde (~).

Find out how to change your Xbox gamertag through a browser, on your Xbox console, or your Windows device.

我的产品密钥不起作用. 如果 Office 产品密钥不起作用，或已停止工作，应与卖家联系，申请退款。 如果产品密钥是独立于软件购买的，则很可能是被盗的产品密钥，或者是以欺骗方式获得随后阻止使用的产品密钥。

Training: Sync files in Microsoft 365 or SharePoint document libraries so they’re always available on your computer even when you’re offline.

Sign in to account.microsoft.com, then select Order History on your Rewards page.