Canon LBP352 User Manual page 496

● A port that is used for Cloud Print may be blocked by a firewall or other protection. Check whether the
5222 port is available with your computer.
● If a proxy server is used on the network, check whether the proxy settings on the machine and the server
are correct. For details, contact your Network Administrator.
Setting a Proxy(P. 274)
IE An unknown error has occurred.
An error with an unidentified cause has occurred during IEEE802.1X authentication.
● Perform a hard reset or restart the machine.
Performing a Hard Reset(P. 451)
IE Cannot analyze the certificate.
Analysis of the certificate received from the authentication server has failed during IEEE802.1X
authentication.
● Check the certificate of the authentication server.
IE Change the password.
The password used for IEEE802.1X authentication has expired.
● Change the password registered in the authentication server, and update the password for IEEE802.1X
authentication.
Configuring IEEE 802.1X Authentication(P. 309)
IE Check auth. settings
The IEEE802.1X authentication method differs between the machine and the authentication server.
● Select the correct IEEE802.1X authentication method.
Configuring IEEE 802.1X Authentication(P. 309)
IE No reply from the destination.
An error has occurred during communication for IEEE802.1X authentication with the authentication
server.
● Check whether the LAN cable is securely connected.
IE Set necessary authentication info.
The information specified for IEEE802.1X authentication is not sufficient.
● Check the IEEE802.1X settings, and specify the settings properly.
Configuring IEEE 802.1X Authentication(P. 309)
IE Set the correct authentication info.
An error has been returned from the authentication server because the certificate to be used for
IEEE802.1X authentication is not specified or it is invalid.
● The certificate to be used for TLS authentication is not specified or it is invalid. Check the certificate, and
specify the valid certificate.
Configuring IEEE 802.1X Authentication(P. 309)
● If the certificate in the machine is valid, check the CA certificate of the authentication server.
Troubleshooting
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