View previous versions of a file. If your file is stored in OneDrive or SharePoint in Microsoft 365, you can go back to a previous version of file.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

A family group is a set of individuals connected through the Microsoft Family Safety app on their Windows, Xbox, or mobile devices. Establishing a family group is an easy, effective way to encourage healthy online habits and manage busy schedules.

Windows 10 puts notifications and quick actions in Action Center—right on the taskbar—where you can get to them instantly. Select Action Center on the taskbar to open it. (You can also swipe in from the right edge of your screen, or press Windows logo key + A.). Notifications at a glance

向组添加来宾. 当你将来宾（也称为外部用户）添加到组时，即向其授予了访问组中所有信息的权限。 这包括电子邮件、日历、项目备注、项目文件和项目计划。

First time, infrequent senders, or senders marked [External] - While it's not unusual to receive an email or Teams message from someone for the first time, especially if they are outside your organization, this can be a sign of phishing.Slow down and take extra care at these times. When you get an email or a Teams message from somebody you don't recognize, or that Outlook or Teams identifies ...

Note: Offers vary by country.Be sure to redeem your rewards points in the same region you signed up in. Do not use a VPN while trying to redeem points. When redeeming points, use a mobile or landline phone number for authentication and not a VoIP phone number.

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

另请参阅. 如果找不到 Microsoft Store，请参阅 在 Windows 10 中查找 Microsoft Store 时遇到问题的疑难解答。. 如果在启动 Microsoft Store 时遇到问题，请参阅 Microsoft Store 无法启动。. 如果可以启动 Microsoft Store，但只是在查找或安装应用时遇到问题，请参阅 我无法从 Microsoft Store 找到或安装应用。