Canon EOS REBEL T7I Wi-Fi (Wireless Communication) Function Instruction Manual page 144

Responding to Error Messages
63: Wireless LAN authentication failed
Are the camera and the access point set to use the same

authentication method?
The camera supports the following authentication methods: [Open

system], [Shared key], and [WPA/WPA2-PSK] (p.109).
Are the camera and the access point set to use the same

password for authentication?
The setting is case-sensitive, so check upper- and lower-case

characters. Make sure that the correct password for authentication
is set on the camera (p.120).
If filtering by MAC address is active, is the MAC address of the

camera used registered at the access point?
Register the MAC address of the camera used to the access point.

The MAC address can be checked on the [View info] screen
(p.135).
64: Cannot connect to wireless LAN terminal
Are the camera and the access point set to use the same

encryption method?
 The camera supports the following encryption methods: WEP,
TKIP, and AES (p.109).
If filtering by MAC address is active, is the MAC address of the

camera used registered at the access point?
Register the MAC address of the camera used to the access point.

The MAC address can be checked on the [View info] screen
(p.135).
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