The contact application (CNT) does not function in the chrome browser but does function in other browsers.

This can be due to an ad-blocker extension installed locally on the users laptop/pc that blacklists the application.  

This must be deactivated to enter the application from the chrome browser.

This can be relevant for other applications too, that suddenly stop working in chrome but work fine in other browsers.

Check with your IT-department if you do not know how to fix this yourself.