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Load or unload add-in programs

Microsoft Excel has three types of add-in programs that provide optional commands and features. Excel add-ins are available when you install Excel or Microsoft Office and are available from the Microsoft Office Web site. Developers and solution providers usually design custom Component Object Model (COM) add-ins and automation add-ins.

ShowLoad or unload an Excel add-in program

ShowLoad or unload a COM add-in program

ShowLoad or unload an automation add-in program