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.

Find out how to stop Windows Security from alerting you about or blocking a trusted file, file type, or process, by adding it to the exclusions list.

This step-by-step article describes how to add, modify, or delete registry subkeys and values by using a Registration Entries (.reg) file.

This article shows you how to reassign certain keys to make it easier to accomplish your daily tasks.

即使已开启其他防火墙，开启 Microsoft Defender 防火墙也很重要。 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：

If you have a list of data you want to group and summarize, you can create an outline of up to eight levels. Each inner level, represented by a higher number in the outline symbols, displays detail data for the preceding outer level, represented by a lower number in the outline symbols.

Refine your search criteria with these helpful examples to find items in Outlook.

After you show the tab, the Developer tab stays visible, unless you clear the check box or have to reinstall a Microsoft 365 program.. The Developer tab is the place to go when you want to do or use the following:. Write macros.

Learn how to insert or register ActiveX controls in your Excel spreadsheet.

When you make your computer a trusted device, you won't need to enter a security code each time you try to access sensitive info, like credit card information associated with your Microsoft account.