How to change the external link of an Excel workbook

When you move a workbook having references to an addin to another PC, Excel upset you showing this messagge (not very clear indeed)

Tip:  Ignore it and choose don't update

Now Start the menu Edit\References...  (the next to last item)

This shows you the following window.

Click on the "Change source.." and search for the new directory where you have saved the addin

Select it and give OK.

Immediately all the links will be update and all the functions of your workbook will work again.

Do not forget to save now the workbook !