Hi Venkatesh Y Rao,
I go through the post carefully, as for remove corrupted data models in the workbook, I would suggest you check methods from the marked answer from the thread: "PowerPivot is unable to load the Data Model" in Excel 2016 and Windows 10
- close the xlsx in question
- open the xlsx with favorite zip tool (i used 7zip)
- delete the "/xl/model" folder
- open xlsx with Excel again and respond to prompts that Excel needs to make repairs to the file
- and that was it
Best Regards,
Clark