Canon EOS-1D X Instruction Manual page 85

11: Connection target not found
Is the pairing software running?
Start the pairing software and follow the instructions to re-establish the
connection (p.44).
12: Connection target not found
Is the target computer on?
Turn on the target computer.
21: No address assigned by DHCP server
What to check on the camera
Is the camera's network setting set to [Auto setting], or its IP
address setting set to [Auto assign]?
If you are not using a DHCP server, set the camera's network setting
to [Manual setting] and IP address setting to [Manual setting] (p.17).
What to check on the DHCP server
Is the DHCP server on?
Turn the DHCP server on.
Are there enough addresses for assignment by the DHCP server?
Increase the number of addresses assigned by the DHCP server.
Remove devices assigned addresses by the DHCP server from the
network to reduce the number of addresses in use.
Handling Error Messages
85