当在新设备中首次启动 Windows 10 时，设备上已安装的防病毒保护程序即是你的默认安全应用。但是，Windows 安全中心已预安装并可随时使用。

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To learn more, check out the Join a Teams meeting video. Join by link. All you need to join a Teams meeting is a link. Select Join the meeting now in your meeting invite to be taken to a page where you can choose to either join on the web or download the desktop app.. If you already have the Teams app, the meeting will open there automatically.

将文档导出为 PDF 是一种在保留文档格式的同时创建文档的可共享副本的便捷方法。 下面是如何在 Word Online 中执行此操作。

Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.

Portable Document Format (PDF) preserves document formatting and enables file sharing. When the PDF format file is viewed online or printed, it retains the format that you intended. The PDF format is also useful for documents that will be reproduced using commercial printing methods.

For more details about customizing your background, see Change your background for a Teams meeting.. Use video filters. Customize your video feed with the video filters like Soft focus and Adjust brightness. Soft focus creates a smoothing effect for your face over video.Adjust brightness enhances the video quality when lighting is poor. To learn more about video filters, see Apply video ...

Which says IF(D2 is blank, then return "Blank", otherwise return "Not Blank").You could just as easily use your own formula for the "Not Blank" condition as well. In the next example we're using "" instead of ISBLANK.

Training: Sign in to office.com with your Microsoft personal, work, or school account. Watch this video to learn how.

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