Trouble shooting semccd socket connection¶

If an error of "No connection could be made because the target machine actively refused it" comes up in the above test.
If not blocked by firewall, the SERIALEM_CCD_PORT specified in environment variable may be locked by a remaining previous 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.