Canon EOS Rebel T6i Instruction Manual page 151

122: Connect to a computer, and correct the settings for
the Web service with EOS software.
Web service setting operation may have failed.

Connect the camera and computer using an interface cable and

reconfigure Web service settings using EOS Utility (p.109).
123: Cannot log in to Web service. Connect to a computer
and correct the settings with EOS software.
Is the camera's registration information or Web service

registered on the camera deleted on CANON iMAGE
GATEWAY?
Connect the camera and computer using an interface cable and

reconfigure Web service settings using EOS Utility (p.109).
124: Invalid SSL certificate. Connect to a computer and
correct the settings with EOS software.
The root certificate has expired or is invalid.

 Connect the camera and computer using an interface cable and
reconfigure Web service settings using EOS Utility (p.109).
125: Check the network settings
Is the network connected?

 Check the connection status of the network.
126: Could not connect to server
CANON iMAGE GATEWAY is under maintenance or load is

concentrated temporarily.
Try connecting to the Web service again later.

Responding to Error Messages
151