The only times I have seen that error is 1 if the firewall is turned on, which in your case it is therefore not allowing it to communicate properly because of the security giving you the error. and 2, if an IT policy is set. I do not know of a workaround for these except turning off the firewall. Have you checked the permission for the programs to make sure they are set to ALLOW in both instances?
"When you do the common things in life in an uncommon way, you will command the attention of the world."
-George Washington Carver