Canon WFT-E6 Manual page 34

Error Messages
Wi-Fi error. Incorrect encryption method.
Make sure the camera and access point are using the same authentication/encryption
method.
Wireless communication cannot be used while the wireless microphone is attached
Wi-Fi connections cannot be used while an optional WM-V1 Wireless Microphone
is attached to the camera.
Disconnect the WM-V1 from the camera and turn it off.
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