Canon EOS 5D Mark IV Instruction Manual page 152

Responding to Error Messages
23: Device with same IP address exists on selected
network
What to check on the camera
Is another device on the camera network using the same IP

address as the camera?
Change the camera's IP address to avoid using the same address

as another device on the network. Otherwise, change the IP
address of the device that has a duplicate address.
If the camera's IP address is set to [Manual setting] in network

environments using a DHCP server, change the setting to [Auto
setting] (p.72).
24: No response from proxy server
What to check on the camera
The camera's proxy server setting is set to [Enable]. Is this the

correct setting?
If no proxy server is used, set the proxy server setting to [Disable]

(p.77).
Do the camera's [Address setting] and [Port No.] settings

match those of the proxy server?
 Configure the camera's proxy server address and port number to
match those of the proxy server (p.77).
Are the camera's proxy server settings correctly entered on

the DNS server?
Make sure the proxy server's [Address] is correctly entered on the

DNS server.
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