Leginon

Refused socket connection for SERIALEMCCD_PORT¶

If an error of "No connection could be made because the target machine actively refused it" comes up in the above test, it could be one of the two reasons:

1. blocked by firewall
2. blocked by a still active broken attempt

Blocked by Firewall¶

You should add this port to Socket ports used by Leginon to be added to firewall exception port list if leaving the firewall on.

Blocked by a still active broken attempt¶

You can check active tcp port with Windows command

netstat

• In some case, you will find SERIALEMCCD or similar listed in Windows Task Manager Processing list. If so, and that process remains after Digital Micrograph is closed, you can terminate it from Task Manager.
• CurrPorts is a program that can be used to check and close socket tcp connection with gui.