Hi Please do help me for this, I am not able to custemize infopath form on click ribbon Customize button I am Getting the below issue:
I am also able to reproduce this issue.
The issue will come when we click on the Customize in Infopath link from the list ribbon.
Solution:
Open the form in another way by below navigation,
Go List Settings Page -> Click on the Form Settings link -> select Customize the current form using Microsoft InfoPath -> Click on the OK button.
Notes:
Now the form got opened, without any issues:
If still, you face the issue, you may check below:
Make sure you are not clicking on the list while it is in a datasheet view mode - if so, change, it to normal view mode and open it.
If still does not work.
Some of the columns schema might have unbounded with the list like recently any columns data type has been changed, so in this case, try to revert the data type to the previous one.