Canon EOS 750D Instruction Manual page 147

65: Wireless LAN connection lost
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
from the point of view of the camera (p.154).
The wireless LAN connection was lost, for some reason, and
the connection cannot be restored.
The following are possible reasons: excessive access to the
access point from other device, a microwave oven or similar
appliance in use nearby (interfering with IEEE 802.11b/g/n (2.4
GHz band)), or influence of rain or high humidity (p.154).
66: Incorrect wireless LAN encryption key
Are the camera and the access point set to use the same
encryption key for authentication?
The setting is case-sensitive, so check upper- and lower-case
characters. Make sure that the correct encryption key for
authentication is entered on the camera and the access point
(p.80, 119).
67: Incorrect wireless LAN encryption method
Are the camera and the access point using the same
encryption method?
The camera supports the following encryption methods: WEP,
TKIP, and AES (p.79, 118).
If filtering by MAC address is effective, is the MAC address of
the camera used registered at the access point?
Register the MAC address of the camera used at the access point.
The MAC address can be checked on the [General sett.] screen
(p.138).
Responding to Error Messages
147