Hello Mohan
I am V. Arya, Independent Advisor, to work with you on this issue.
There is a possibility that an Add-in is creating problems. To test this hypothesis, start Excel in safe mode (How to - https://support.office.com/en-us/article/open-o... )
If you don't face the issue, then one of the add-ins will be the culprit. Now you can start application normally and you can disable all of them (File -- Options -- Add-ins) and enable them one by one and check to catch the culprit add-in.
Next option would be the usual repair to solve any issue with Office installation.
Press Windows key, hold it and press r to open Run window.
Type appwiz.cpl and press enter
This will open Uninstall or change a program window
Click Office in the list of program
Click Change at top
Select Online repair
Restart your computer once Online repair is finished.
Let me know the outcome.