Hi @Uddeshya 
 
Welcome to Freshworks Community :)
 
I am afraid we cannot hide the close button in the widget popup with the help of either CSS or JavaScript. However, we are curious to know about the use case. So we can help you further.
 
Here’s to you
Vidya D

Learn something new today, get recognized for your contributions, stay on top of product updates and build meaningful connections in our Freshdesk community. Fresh ideas, quality service :)