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Hi Hagai,

The Editor Session will try and determine if another session is running by checking if TCP port 51321 is available.

When the first offline session starts, it claims this port, then all subsequent sessions test if the port is available, if not it hides the offline option.

In your case it sounds as if either the port is blocked by a firewall or some other application / process has claimed the port.

2 things to check:

1) Do you have a firewall active which is blocking TCP port 51321 ?
2) Is any other application using TCP 51321? Try typing “netstat” at a command prompt in windows. Go to Start, run, type “cmd” in the box, then at the prompt type “netstat”, copy the results and post them back if you’re not running a firewall.

Hope this helps.