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。

Going passwordless refers to removing your password and using a passwordless method to sign in instead. Passwordless solutions such as Windows Hello, the Microsoft Authenticator app, SMS or Email codes, and physical security keys provide a more secure and convenient sign-in method. While passwords can be guessed, stolen, or phished, only you can provide fingerprint authentication, or provide ...

If you selected the Share button, people will receive an email message inviting them to open the file. They can select the link to open the workbook. A web browser will open, and the workbook will open in Excel for the web. If they want to use the Excel desktop app to co-author, they can select Edit in Desktop App.However, they'll need a version of the Excel app that supports co-authoring.

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On the Home tab, in the Number group, click the arrow next to the General box, and then click More Number Formats.

File Explorer in Windows 11 helps you get the files you need quickly and easily. To check it out in Windows 11, select it on the taskbar or the Start menu, or press the Windows logo key + E on your keyboard.. How to use File Explorer:

Learn how to download, customize, and troubleshoot Windows Media Player 12 with helpful guides and tips.

Get help with Outlook for Windows, the Outlook app, Outlook.com, and more. Find training videos, how-to articles, and Outlook support content

Adjust size and color. To adjust the size of text, apps, and other items, select the Start button, then select Settings > Accessibility > Text size.Use the slider next to Text size to make just the text on your screen larger.To scale up everything on your screen, select the Start button, then select Settings > System > Display, and change the Scale drop-down menu under Scale & Layout to a ...

How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!