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The customization cannot be installed because another version is currently installed...."

Anthony edited this page Jun 26, 2017 · 9 revisions
  1. It means you have built the addin in debug on your machine and it is also installed from the deploy location.

  2. Open “COM Add-ins” form by either

Going to the Developer ribbon and click on the “COM Add-ins” button

Or Open Excel File | Options and under “Add-Ins” select “COM Add-ins” and click “Go…”

  1. Select “Excel Addin Script Help” and click the button “Remove”
  1. Then you’ll need to uninstall and reinstall the Addin from "Programs and Features"
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