Follow these steps to uninstall the Excel 365 on Mac / Excel Online add-in:

  • Go to Insert menu and click My Add-ins button (on the newer versions of Excel click on the Add-ins button on the right of the ribbon and then click on More Add-ins bottom right button)

Newer versions of Excel

Newer versions of Excel

  • Select My Add-ins tab
  • Click the three dots top right menu next to the Artemis Sheets add-in
  • Click Remove from the menu
  • Click Remove in the displayed dialog