You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.

Create a system restore point. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Help for Microsoft mobile apps on Android and iOS devices. Find how-to articles and video tutorials for Samsung Galaxy and iPhone. Learn how to link your Microsoft 365 mobile apps, including Outlook, OneNote, and Your Phone.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Your Microsoft account dashboard is where you can manage your personal information and security settings, keep tabs on your subscriptions and order history, and manage your payment and billing options.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Get Microsoft 365 support, help, and learning resources. Organize your life, expand your creativity, and protect what’s important with Microsoft 365

如何開啟 [電腦健康情況檢查] 在 Windows 中，使用工作列上的 [搜尋] 來搜尋 [電腦健康情況檢查]，然後從結果清單中選取。

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