Hi Sandeep,
This issue may occur due to Changes to JRE Security Dialogs. For detailed information refer below articles.
https://www.ptc.com/appserver/cs/view/solution.jsp?n=CS130577
https://www.ptc.com/appserver/cs/view/solution.jsp?n=CS133402
I hope this will answer your query.
Regards,
Mahesh
