Aficio C6055 Operating Instructions Manual page 258

7. Troubleshooting
Error Code
W0406-104
7
W0400-105
256
Cause
5. Kerberos authentication
failed.
1. The UserPrincipleName
(user@domainname.xxx.com)
form is being used for the login
user name.
Solution
1. Kerberos authentication
settings are not correctly
configured.
Make sure the realm name,
KDC (Key Distribution Center)
name and corresponding
domain name are specified
correctly.
2. The KDC and machine timing
do not match.
Authentication will fail if the
difference between the KDC
and machine timing is more
than 5 minutes. Make sure the
timing matches.
3. Kerberos authentication will
fail if the realm name is
specified in lower-case letters.
Make sure the realm name is
specified in capital letters.
4. Kerberos authentication will
fail if automatic retrieval for
KDC fails.
Ask your service representative
to make sure the KDC retrieval
settings are set to "automatic
retrieval".
If automatic retrieval is not
functioning properly, switch to
manual retrieval.
The user group cannot be
obtained if the
UserPrincipleName
(user@domainname.xxx.com)
form is used.
Use "sAMAccountName
(user)" to log in, because this