Hi Shikhar_1416,
Thanks for sharing updates with us and I really appreciate your effort and your precious time doing those tests.
It seems you are able to insert Row/Column via Home Ribbon tab and using the shortcut key. The issue only occur when you right-click on cell. Based on my test in same Excel version( as like yours) I can insert via right-click on cell, see image below for your reference:
![Image](https://learn-attachment.microsoft.com/api/attachments/a7c089e2-1301-4bec-a5cd-af39b75b13e7?platform=QnA"https://support.microsoft.com/en-us/help/929135/how-to-perform-a-clean-boot-in-windows" rel="ugc nofollow">perform a clean boot in Windowsto determine whether a background program is interfering with Office program.
If all suggestions above don’t work, you can try uninstall Office, then reinstall to check if the same problem will occur.
I appreciate your understanding and stay safe!!
Best Regards
Waqas Muhammad