Use Microsoft Teams (work or school) for a Microsoft work or school account or a guest account in Windows 11. Also, find out which version of Teams you’re using.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

When you back up your files, apps, and settings in the cloud using your Microsoft account, you get 5 GB of free cloud storage and other benefits that protect your files with the latest security and make everyday tasks easier.

Download the latest Windows update from the Windows Update page in Settings for your device when it becomes available.

Internet Explorer 11 支持已于 2022 年 6 月 15 日结束。 如果访问的任何网站需要Internet Explorer 11，则可以在Microsoft Edge中使用Internet Explorer模式打开它。

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

Learn how to reset or change your Microsoft account password. Get help with a forgotten Microsoft account password.

Do you need some help installing Quick Assist? For the best experience, download and install the new version of the Quick Assist app from Microsoft Store. If you have problems installing Quick Assist, here are some steps to try to get it installed and working properly.

Learn different ways to locate your BitLocker recovery key in Windows, and learn about how BitLocker might have been activated on your system.

使用 vlookup、hlookup 和其他函数（如 index 和 match）根据您输入的值搜索和查找数据。 本文将让您快速回顾 vlookup，然后链接到更多内容。