Select the product you need help with. We'll show you self-help options first. Additional help is available if you need it, including live chat with a Microsoft specialist. Microsoft 365. Office. Windows. Xbox. Surface devices. Copilot.

简介. Microsoft .NET Framework修复工具检测影响 Microsoft .NET Framework 安装或更新的常见问题。. 该工具尝试通过应用已知修补程序或修复受支持的.NET Framework版本的损坏安装来解决这些问题。. 该工具具有易于使用的基于向导的用户界面 (UI) 。. 它还支持命令行使用以及 ...

摘要 本文介绍了适用于 Windows 11 Version 21H2 的 3.5、4.8 和 4.8.1 安全和累积更新。 安全改进 此版本中没有新的安全改进。 此更新是累积更新，包含以前发布的所有安全改进。

At the top corner of the browser, select Settings and more > Settings . To change appearance, select Appearance and make the changes you want to your default theme, zoom, toolbar, and fonts. To change startup behavior, select On startup, and then select what you want Microsoft Edge to display on startup.

Disk cleanup in Windows. To delete temporary files: In the search box on the taskbar, type disk cleanup, and select Disk Cleanup from the list of results. Select the drive you want to clean up, and then select OK. Under Files to delete, select the file types to get rid of. To get a description of the file type, select it.

Select Install apps. Follow the instructions in the browser to download the installer and start your installation. Tip. As your apps are installing you might see the User Account Control prompt pop up and ask Do you want to allow this app to make changes to your device? Select Yes. Close the installer window after it's finished.

选择 "开始 "，然后选择 "Power > 休眠" 。. 按键盘Windows徽标键 + X，然后选择"关闭"或注销 ">休眠" 。. 注意: 如果连接到电脑的设备（例如显示器、打印机或扫描仪）在从睡眠状态或休眠状态唤醒后不能正确工作，你可能需要先断开设备连接并重新连接或重新启动 ...

Windows 11 Windows 10. To open up your webcam or camera, select the Start button, then select All apps, and then select Camera in the list of apps. If you have multiple cameras, you can switch between them by selecting Change Camera at the top right once the Camera app is opened. Open Camera.

Add an app to run automatically at startup in Windows 10. Select the Start button and scroll to find the app you want to run at startup. Right-click the app, select More, and then select Open file location. This opens the location where the shortcut to the app is saved. If there isn't an option for Open file location, it means the app can't run ...

VLOOKUP の使用には一定の制限があります。. VLOOKUP 関数は、左から右への値のみを検索できます。. つまり、検索する値を含む列は、常に戻り値を含む列の左側に配置する必要があります。. スプレッドシートがこのように構築されていない場合は、VLOOKUP を ...