Arc Service Interaction Error

I have tried logging in several times and logging out and each time the screen pops up with “Lost Connection to Server.  Reason: Arc Service Interaction Error”.  Running Windows 8.1 and internet is up.  There have been no problems with my firewall/antivirus before now.

 

Any suggestions?

https://forum.star-conflict.com/index.php?/topic/27094-arc-service-interaction-error/