Canon EOS 80D - Manual (Page 262)

W-14
Basic Operation and Settings
 When multiple exposures, video snapshot, or time-lapse movie is set,
you cannot select [51: Wireless communication settings].
Interface Cable Connection Cautions
 During a wireless LAN connection, you cannot use the camera by
connecting it to Connect Station, a computer, a GPS receiver, or another
device with a cable. Terminate the connection before connecting a cable.
 When the camera is connected to Connect Station, a computer, a GPS
receiver, or another device with a cable, you cannot select [51:
Wireless communication settings]. Disconnect the cable before
changing any settings.
Cards
 For [z], [l], [o], and [m], the camera cannot be connected
wirelessly if there is no card in the camera. Additionally, for [l], [o],
and [m], the camera cannot be connected wirelessly if there are no
images saved on the card.
Using the Camera During Wireless Connection
 When you want to prioritize the wireless connection, do not operate the
power switch, card slot cover, battery compartment cover, or other parts.
Otherwise, the wireless connection may be terminated.
Using an Eye-Fi Card
 When [Wi-Fi/NFC] is set to [Enable], image transfer using an Eye-Fi
card is disabled.