Hi ​@hrdilshan 

Could you check the content of the tech docs linked below?

https://docs.ifs.com/techdocs/24r1/030_administration/050_data_management/050_data_migration/061_excel_add_in/#uninstalling

Option -01 

Uninstalling¶

Please follow Microsoft documentation for details on uninstalling Data Migration Excel Add-In web app. Following describes uninstalling Excel Add-In for Sideloaded app.

• For Office web client go to internet options and clear all cookies related to excel, clear browsing cache and refresh web client.
• For Office desktop clients clear all contents in folder C:\Users\<username>\AppData\Local\Microsoft\Office\16.0\Wef and restart MS Excel.

Option -02

Remove the URL and clcik Ok , it will remove all the Excel addings