PAC display runtime stops


I am using Pac display 9.6.
It is working smooth most of the time,but some time my pac runtime dont show my running project.
To start my running project i have to go on pac display configuration and then “save project and load runtime” option to run my project.

Is there any way to rectify this issue??
Or this issue occurs due to computer’s antivirus or firewall??

It could well be the windows defender software.
Check out this post (and a few either side of it) here;

Thanks Beno for the information.