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。

Make sure your email account is supported. You can add accounts from Microsoft 365, Exchange Online, Exchange Server (2007 SP2, 2010, 2013), Outlook.com (including Hotmail, Live, and MSN), Gmail, iCloud and Yahoo!

How to find and remove duplicates in Excel. Filter for unique values in large or small datasets to clean up your worksheets and workbooks.

On the Home tab, in the Paragraph group, click the arrow next to Bulleted List, and then click Define New Bullet.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Training: As you select and move objects in PowerPoint, guides appear to help you align objects and space them evenly. You can also use the helpful Align options, Guides, and Gridlines to align objects to give your presentation a professional look. Watch this video to learn how.

Issues that are fixed in this update. The following issues are fixed for .NET Framework 4.7.2. SQL Server (SQL) Fixes an issue in which the .NET Framework API SqlConnection.ConnectionString property is used to set a null or empty connection string. In this situation, a Null Reference Exception (NRE) occurs when you use the API together with .NET Framework 4.7.2.

Ctrl+click the application you selected and click Move to Trash.

Hide or display zero values in Excel worksheets by using an option in the Advanced tab, or by using a number format, using a conditional format, a function, and by hiding zeros in PivotTable reports.

Whiteboard makes it easy to collaborate in the hybrid workplace or classroom. Brainstorm, plan, and share with others on a digital canvas, all in real time!