LINQPad.ExecutionModel.ProcessBlockedException
I have the below attached issue, I have looked at the logs through event viewer , added rules through firewall and group policy but no avail on the matter and checked through anitvirus for exclusions for the application and regardless still with the same error. 
Comments
Which anti-virus software are you running? Are you connected to a domain with group policy?
We are using Checkpoint endpoint as an antivirues and yes we are
This issue wasn't present in previous version of the program with the same policies and antivirus
It could be that the previous version was whitelisted by the antivirus software or group policy. You will need to find out what's responsible in order to update the whitelist. Maybe your network administrator can help.