If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Notes: If you know your password, but just want to change it, go to account.microsoft.com Security tab, and select Change my password. If you know your username and password but they have stopped working, read My username and password have stopped working.

首先尝试以下操作. 首先尝试执行以下操作来帮助你解决连接问题或缩小该问题的范围。 运行获取帮助以排查和修复常见的连接问题。右击任务栏右侧的网络图标，然后选择“诊断网络问题”或打开“获取网络和 Internet 帮助”

Microsoft Edge is the browser recommended by Microsoft. Support for Internet Explorer ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can reload it with Internet Explorer mode in Microsoft Edge.

Track and print results. When you create and send an email with voting buttons to others, you may want to track and print the results. You can either quickly copy the voting results into a blank Word document or a new email, or copy them into Excel so you can work with the data later.

Open directly from the Search bar. If the Bing Chat icon is displaying in your Search bar on the taskbar, simply select it and Bing Chat will open in Microsoft Edge.. Open in Search Home. Here's how: Select the Search icon or the Search bar on your taskbar.

弹出窗口阻止程序无法阻止哪些弹窗？ 如果在启用此功能并且尝试了上面列出的解决方案后，网页中仍然显示了弹出窗口，则它们可能是网站广告，以弹出窗口的样子呈现。

If you can't find a file on your computer or you accidently modified or deleted a file, you can restore it from a backup (if you're using Windows backup) or you can try to restore it from a previous version.Previous versions are copies of files and folders that Windows automatically saves as part of a restore point.

Tip: If you installed the Microsoft 365 apps as part of a suite, such as Office Home and Student or Microsoft 365, search for the suite name.For stand-alone apps search by the app name, such as Project or Visio. In most cases you can't uninstall an individual app if it's included in your Microsoft 365 suite.

加载项为 Microsoft Excel 提供可选的命令和功能。 默认情况下，加载项在 Excel 中不立即可用，因此在某些情况下，必须首先安装和 激活这些加载项，以便您可以使用它们。 某些加载项内置于 Excel 中，例如规划求解和分析工具库。 其他一些加载项可从下载中心获取，必须先下载并安装。