Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 488)

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?
g
Move the antenna of the access point to a position clearly visible
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?
g Check the SSID at the access point, then set the same SSID on the
camera.
What to check at the access point

Is the access point turned on?
g
Turn on the power of the access point.

If fi ltering by MAC address is active, is the MAC address of the camera in
use registered at the access point?
g
Register the MAC address of the camera used to the access point.
The MAC address can be checked on the [View info] screen
( = 481).