Swarm not distributing and weird error on remote agents Log

Hi All,

we are having some issues with using swarm.

Basically what we are getting is that is distributing on the local machine that is running the lightmass build and it shows this message on the agent of any remote machine continously. It show all the other machines bars completely white (so no jobs on remote machines):

11:32:44: [Connect] Remote agent connection object obtained: STC11
11:32:44: [Connect] Remote agent connection failed: STC11
11:32:49: [Connect] Remote agent connection object obtained: STC11
11:32:49: [Connect] Remote agent connection failed: STC11
11:32:54: [Connect] Remote agent connection object obtained: STC11

So it looks like it tries to connect to the coordinator running on STC11 but any agent fails to do so, because of that message. We tried disabling firewall, sharing the DotNet folder under Engine/Binaries over the network but that doesnt work. We still get the previous log output.

Doesn anyone have an idea of why this is happening?

thanks in advance