Call to GetCustomUI() for RibbonID "Microsoft.Excel.Workbook"

This error invokes when your installed visual studio Tools of Office try to load Design-Time Adaptor for Excel on runtime.


Its is an known bug in Microsoft office with visual studio tools.


Workaround :


Open developers tab in Microsoft excel


Click on COM -Add-Ins





Uncheck the all "Visual Studio Tools of Office Design-Time Adaptor for Excel" option:









Click OK and Save.


Now close the excel sheet and open again. You will not get error this time.


If it still persists, them please share your issue details on "Arpit_Mohan@outlook.com"