Hi,
1- Maintain host entry in host files---- Start Menu-> Run->Drivers-> etc -> hosts file
fo to bottom of hosts file and add <ip address> of pi server <space> FQDN of PI server
2. If hosts entries are maintained properly then try these versions of java
Java 6 update 20
Java 6 upadate 31
java 6 Update 45
Must work till this . If it doesn't work then it means P4 ports are having some issues.
Check with basis if ports are opened OR is PI sever and PI message server installed at same IP.
If not you might need to maintain another host enttry for PI message server
<ip address of pi server> <space> <FQDN of pi server>
<ip address of Pi message server? <space> <FQDN of pi server>
In the general tab -> Nwtwork settings choose Direct connection or Browser Settings.
Regards,
Vikas