如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

When your camera isn't working in Windows 11, it might be missing drivers after a recent update. It's also possible that your antivirus program is blocking the camera, your privacy settings don't allow camera access for some apps, or there's a problem with the app you want to use.

The type of support Microsoft provides for consumers depends on the product you're calling about and if you have a product for home or for business use. It can also depend on if you want help for an issue with a service like OneDrive or Outlook.com, or help with Windows, but you don't have an existing Microsoft 365 subscription.

Find out how to install Windows 11 on your device, whether you need to use Windows Update, Cloud download, or Local reinstall. Get tips and troubleshooting help from Microsoft Support.

Learn how to find and change settings in Windows. Find your Windows settings in a snap! Select the Start button, then select Settings .From there, browse the categories or use search to find what you're looking for.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

Learn how to use drag and drop to transfer content between your Android device and PC.

If you changed your hardware in order to upgrade to Windows 11 and the system is not recognizing the change in a timely manner, this article explains how to initiate the assessment manually.

[設定] の [Windows Update] ページにアクセスするための推奨オプションなど、Windows 11 をインストールする方法をご覧ください。

Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.