some swarm agent can not ping coordinator

swarm coordinator is running :10.20.12.223

swarm agent is running in windows 7 OS, without antivirus software & filewall:
swarm agent1: 10.20.12.223
swarm agent2: 10.20.12.222
swarm agent3: 10.20.12.220

swarm agent configuration:
CacheFolder=d:\ue4temp
AgentGroupName=Agents
AllowedRemoteAgentGroup=Agents
AllowedReomteAgentNames=*
CoordinatorRemotingHost=10.20.12.223

there are two agents in swarm coordinator:
swarm agent1 & swarm agent 2
but swarm agent 3 say: [Ping] Communication with the coordinator failed…

why?

– Thread moved to General Discussion –

@anonymous_user_2c18f218
Please report this issue in the Bug reports section in AnswerHub. You will get more response there.

bingo, i should do that
i have more information to report…