它保护你免遭未经授权的访问。. 若要打开或关闭 Microsoft Defender 防火墙，请执行以下操作：. Windows 11 Windows 10. 选择“ 开始 ” ，然后打开“ 设置 ” 。. 在“ 隐私和安全 ” 下面，选择“ Windows 安全 ” >“ 防火墙和网络保护 ”。. 打开 Windows 安全中心设置. 选择 ...

To check for updates, select Start > Settings > Windows Update , then select Check for updates. If updates are available, you can choose to install them. Check for updates. If you run into problems updating your device, including problems with previous major updates, see common fixes at Troubleshoot problems updating Windows.

Here's how to change the size of text, images, and apps in Windows. To change your display in Windows, select Start > Settings > Accessibility > Text size.To make only the text on your screen larger, adjust the slider next to Text size.To make everything larger, including images and apps, select Display , and then choose an option from the drop-down menu next to Scale.

Internet Explorer 11 will remain a supported browser. Internet Explorer 11 is a component of the Windows operating system and follows the Lifecycle Policy for the product on which it is installed. Desktop Mobile. Find Teams on the web at https://teams.microsoft.com. To use Teams, you need a Microsoft 365 account with a Business or Enterprise ...

VLOOKUP 第一个参数是要查找的值。. 此参数可以是单元格引用，也可以是固定值，例如“smith”或 21,000。. 第二个参数是单元格搜索范围 C2-:E7，VLOOKUP 在其中搜索要查找的值。. 第三个参数是单元格范围内包含所查找值的列。. 第四个参数可选。. 输入 True 或 False ...

Open the Microsoft Authenticator app, go to your work or school account, and turn on phone sign-in. When you tap on the account tile, you see a full screen view of the account. If you see Phone sign-in enabled that means you are fully set up to sign in without your password.

Excel contains several functions to help you count the number of cells in a range that are blank or contain certain types of data. Select the cell where you want the result to appear. On the Formulas tab, click More Functions, point to Statistical, and then click one of the following functions: COUNTA: To count cells that are not empty.

立即获取. 如果你想要重新安装 Windows Media Player，请尝试以下操作：. 单击“开始”按钮 ，键入“功能”，然后选择“打开或关闭 Windows 功能”。. 向下滚动并展开“媒体功能”，清除“Windows Media Player”复选框，然后单击“确定”。. 重启设备。. Windows Media Player ...

Enable editing in your document. Word for Microsoft 365 Word 2021 Word 2019 Word 2016 Word 2013. If you receive or open a document and can't make any changes, it might be Open for viewing only in Protected View. Follow these steps to edit: Go to File > Info. Select Protect document. Select Enable Editing. Edit a protected document.

Aanmelden bij Hotmail of Outlook.com. Hotmail is nu Outlook.com. Als je je wilt aanmelden bij Hotmail, heb je de gebruikersnaam en het wachtwoord van je Microsoft-account nodig. Selecteer bij het aanmelden Ja bij de prompt Aangemeld blijven? als je de volgende keer rechtstreeks naar je postvak wilt gaan (niet aanbevolen voor gedeelde computers).