How to remove a reference to the missing Microsoft Excel addin?
You should likely have to remove it from your Excel COM Add-ins.
Following this:
- Open Excel, go to File >Options>Add-Ins.
- In the Manage box, click COM Add-ins, and then click Go. The COM Add-Ins dialog box appears.
- Then click the COM add-in’s name that you want to delete in the Add-ins available box, and then click Remove.