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  • Apps for Excel
  • Load the Analysis ToolPak

    The Analysis ToolPak is an Excel add-in program for in-depth data analysis that is available when you install Office or Excel. To use it in Excel, however, you need to load it first.

  • Load the Solver Add-in

    To use Solver, an Excel add-in program, you must first load it. Solver finds the optimal value for one cell based on values in other cells.

  • Why is my add-in crashing?

    See what to do when you get a Data Execution Protection (DEP) message about an add-in you use.

  • Add or remove add-ins

    Add-ins provide optional commands and features for Excel. You must first install and (in some cases) activate these add-ins so that you can use them.