Install the S/MIME control. Get a certificate, sometimes referred to as a key or digital ID. The first step to use S/MIME is to obtain a certificate from your IT administrator or helpdesk.

A Desktop Alert is a notification that appears on your desktop when you receive a new email message, a meeting request, or a task request. By default, Desktop Alerts are turned on.

If your account has been hacked, use our sign-in helper tool below to help guide you to the right solutions. The tool will ask for your email address or phone number, and either show appropriate self-help, or offer the chance to talk to an agent.

如果您需要开展复杂的统计或工程分析，则可使用分析工具库以节省步骤和时间。 为每项分析提供数据和参数，此工具将使用适当的统计或工程宏函数来计算并将结果显示在输出表格中。

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Note: Exporting and importing a mailbox using a .pst file isn't supported in new Outlook at this time. To export a mailbox, you need to use the desktop version of Outlook (also known as classic Outlook) following the steps below.Classic Outlook is included with Microsoft 365 subscriptions that include desktop apps such as Microsoft 365 Personal or Family or Microsoft 365 Business Standard, and ...

Note: If you have a current version of Microsoft 365, then you can input the formula in the top-left-cell of the output range, then press ENTER to confirm the formula as a dynamic array formula. Otherwise, the formula must be entered as a legacy array formula by first selecting the output range, input the formula in the top-left-cell of the output range, then press CTRL+SHIFT+ENTER to confirm it.

若要查看或添加现有批注中不支持的格式，请使用" 审阅" 窗格。 如果在默认批注卡中查看和添加这些格式选项对于您的工作流至关重要，请告知我们 ，使用应用内反馈，以便我们可以确定未来对新式批注的改进的优先级。

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Credential Manager lets you view and delete your saved credentials for signing in to websites, connected applications, and networks. To open Credential Manager, type credential manager in the search box on the taskbar and select Credential Manager Control panel.