The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

These steps are the same whether you're adding your first iCloud email account or additional iCloud accounts to Outlook. Select a tab option below for the version of Outlook you're using.

如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Discusses the release of the Malicious Software Removal Tool (MSRT) to help remove specific prevalent malicious software from Windows-based computers.

Summary. Windows includes a tool called Microsoft System Information (Msinfo32.exe). This tool gathers information about your computer and displays a comprehensive view of your hardware, system components, and software environment, which you can use to diagnose computer issues.

In Windows 11 22H2, the default app used to host console windows has been changed to Windows Terminal. After the October 2022 update, Command Prompt, Windows PowerShell, and other console apps will appear inside an instance of Windows Terminal.

Microsoft 365、POP、IMAP、または Microsoft Exchange ベースのメール アカウントを利用できるように Outlook を設定する方法について説明します。

Lists all Excel functions by their category, such as Logical functions or Text functions.

Learn how to use digital signatures, digital IDs, and signature lines in Microsoft 365 files, such as Word, Excel, and PowerPoint.