Canon imageRUNNER 2545i System Settings Manual page 285

<IEEE802.1X Error Set the correct certificate information.> or
<IEEE802.1X error. Set the correct Cert. info.> is displayed.
Cause
Remedy
<IEEE802.1X Error Change the password.> or
<IEEE802.1X error. Change the password.> is displayed.
Cause
Remedy
<IEEE802.1X Error Check authentication settings.> or
<IEEE802.1X error. Check authentication settings.> is displayed.
Cause
Remedy
8
<IEEE802.1X Error The Certificate has expired.> or
<IEEE802.1X error. The Certificate has expired.> is displayed.
Cause
Remedy
<IEEE802.1X Error The Certificate is incorrect.> or
<IEEE802.1X error. The Cert. is incorrect.> is displayed.
Cause
Remedy
8-4
Identifying and Isolating Problems
The correct client authentication information (the key pair and certificate, user
name and password, and the CA certificate) is not set.
Check for incorrect settings in the authentication method and authentication
information (the key pair and certificate, user name and password, and the CA
certificate). (See "IEEE802.1X Authentication Settings," on p. 2-9.)
The password has expired.
Set a new password. (See "Selecting the IEEE802.1X Authentication Method,"
on p. 2-10.)
The specified authentication method of the machine does not match the
authentication method of the RADIUS server.
Make sure that the correct authentication method is specified on the machine. If
the information set on the machine is inconsistent with that of the RADIUS
server, specify the correct authentication method. (See "Selecting the
IEEE802.1X Authentication Method," on p. 2-10.)
The server certificate sent from the RADIUS server has expired.
Check the expiration date of the server certificate on the RADIUS server.
An error occurred when verifying the server certificate sent from the RADIUS
server using the CA certificate.
Check for any errors in the server certificate on the RADIUS server, as well as
the CA certificate registered on the machine. (See "Checking/Deleting a CA
Certificate," on p. 3-31.)