Canon EOS 90D Advanced User's Manual page 488

Responding to Error Messages
61: Selected SSID wireless LAN network not found
Are any obstacles blocking the line of sight between the camera and the

antenna of the access point?
Move the antenna of the access point to a position clearly visible
g
from the point of view of the camera ( = 494).
What to check on the camera
Does the SSID set on the camera match that of the access point?

Check the SSID at the access point, then set the same SSID on the
g
camera.
What to check at the access point
Is the access point turned on?

Turn on the power of the access point.
g
If fi ltering by MAC address is active, is the MAC address of the camera in

use registered at the access point?
Register the MAC address of the camera used to the access point.
g
The MAC address can be checked on the [View info] screen
( = 481).
488