We were unable to send Deployment tasks to the Client machine from Task Server.
From the PECTAgent.log we were able to find the following line :
No connection could be made because the target machine actively refused it.
The WWW Service was set to Manual and was not started which caused the Default web site under IIS to not start as well.
We set the www service to automatic and then started it. Once that was done we were able to also start the Default website under IIS and get the Task Server Agent to register to itself. And after that we were also able to push the tasks to the Client machine.
NS 7.1.2 MP1
Site Server with the PXE Services.