Instruction Manual
“Unable to contact the domain controller for the user’s realm” error message
This system log error indicates that the domain, realm, or domain controller specified in the Kerberos configuration
file is incorrect.
CHECK THE DOMAIN, REALM, AND DOMAIN CONTROLLER IN THE KERBEROS CONFIGURATION FILE
If you used the device Kerberos setup file, then:
1 From the Embedded Web Server, click Settings or Configuration.
2 Click Security > Security Setup > Kerberos 5 > View File.
3 Make sure all domain, realm, and domain controller information is correct.
If you used simple Kerberos setup, then:
1 Access the application configuration settings from the Embedded Web Server.
2 Under the Simple Kerberos Setup heading, make sure the values typed in the Realm, Domain Controller, and
Domain fields are correct. For information about configuring these settings, see
“Using simple Kerberos setup”
on page 13.
3 Click Apply.
“Domain controller and device clocks are different beyond an acceptable range.
Check the device's date and time” error message
This system log error indicates that the printer clock is more than five minutes out of sync with the domain controller
system clock.
CHECK THE DATE AND TIME ON THE PRINTER
1 From the Embedded Web Server, click Settings or Configuration.
2 Click Security > Set Date and Time.
• If you configured date and time settings manually, then verify or correct the settings. Make sure the time
zone and daylight saving time (DST) settings are correct.
• If you configured the printer to use a Network Time Protocol (NTP) server, then verify that the NTP settings
are correct and that the NTP server is functioning correctly.
Note: If your network uses Dynamic Host Configuration Protocol (DHCP), then verify that NTP settings are
not provided by the DHCP server automatically before configuring NTP settings manually.
3 Click Submit.
“Unable to validate certificate from domain controller” error message
This system log error indicates that the required Certificate Authority (CA) certificate or certificates are not installed
on the printer or that you selected the wrong domain controller validation method. Try one or more of the following:
MAKE SURE THE CORRECT CERTIFICATES ARE INSTALLED ON THE PRINTER
See “Installing certificates manually” on page 5.
Troubleshooting 32