若要将其关闭，请将设置切换为“关闭”。 关闭 Microsoft Defender 防火墙可能会使设备（以及网络，如果有）更容易受到未经授权的访问。

Erfahren Sie, wie Sie einen Windows-Product Key für die Aktivierung finden und wann Sie stattdessen eine digitale Lizenz verwenden.

A workbook is a file that contains one or more worksheets to help you organize data. You can create a new workbook from a blank workbook or a template. By default, a new workbook contains three worksheets, but you can change the number of worksheets that you want a new workbook to contain. You can also add and remove worksheets as needed.

To add a picture, in the box you want to add it to, click the picture icon , select the picture you want to display in the chart, and then click Insert.

To be able to send bulk email via mail merge, you must already have installed a MAPI-compatible email program such as Outlook or Gmail. The following process assumes that you already have the message you intend to send created and open in Microsoft Word.

At any time, you can change the time zone in Outlook so that it matches your current geographic location. Changing the time zone in Outlook is the same as changing it in the Windows Control Panel, and the change is reflected in the time displays in all other Microsoft Windows-based programs.

List view. A unique feature of the Tasks app how it displays tasks and information associated with them in rows and columns. This is called List view, and allows you to change many tasks at once, which wasn't as possible in either To Do or Planner before.

Windows 设备可能会在不同时间获得新功能，因为 Microsoft 通过多种服务技术提供非安全更新、修补程序、改进和增强功能，包括受控功能推出 (CFR)。 如果你需要重启设备来完成更新，Windows 会通知你，你可以选择最适合你完成更新的时间。

Important: Workbook links are considered potentially unsafe and must be enabled when you open a formula workbook.When you open a formula workbook, click Enable Content in the Message Bar to allow the workbook links to function. If you don't, Excel keeps the most recent values and disables refreshing the links with values from the data workbook.

Las cuentas de Microsoft son para uso personal y para acceder a servicios como Outlook.com, Xbox o Skype. Las cuentas profesionales y educativas de Microsoft son para organizaciones que usan Microsoft 365 para empresas.. Elige tu tipo de cuenta u obtén más información sobre las diferencias.