Canon EOS 90D Advanced User's Manual page 485

21: No address assigned by DHCP server
What to check on the camera
On the camera, IP address is set to [Auto setting]. Is this the correct

setting?
If no DHCP server is used, specify the settings after setting the IP
g
address to [Manual setting] on the camera ( = 462).
What to check on the DHCP server
Is the power of the DHCP server on?

Turn on the DHCP server.
g
Are there enough addresses for assignment by the DHCP server?

Increase the number of addresses assigned by the DHCP server.
g
Remove devices assigned addresses by the DHCP server from the
g
network to reduce the number of addresses in use.
Is the DHCP server working correctly?

Check the DHCP server settings to make sure it is working correctly
g
as a DHCP server.
If applicable, ask your network administrator to ensure the DHCP
g
server is available.
Responding to Error Messages
485