Lexmark CS517 Embedded Web Server--Security: Administrator s Guide - Page 61
KDC and MFP clocks are out of sync
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Troubleshooting 61 KDC and MFP clocks are out of sync This error indicates that the printer clock is more than five minutes out of sync with the domain controller clock. Make sure that the date and time settings on the printer are correct 1 From the Embedded Web Server, click Settings > Security > Set Date and Time. 2 If you have manually configured date and time settings, then adjust the settings if necessary. Make sure that the time zone and daylight saving time settings are correct. Note: If your network uses DHCP, then make sure that NTP settings are not automatically provided by the DHCP server before manually configuring NTP settings. 3 If the printer uses an NTP server, then make sure that those settings are correct and that the NTP server is functioning correctly. 4 Apply the changes. Kerberos configuration file is not uploaded This error occurs when Smart Card Authentication is configured to use the Device Kerberos Setup, but no Kerberos file has been uploaded. Make sure that the Kerberos file has been uploaded 1 From the Embedded Web Server, click Settings > Apps > Apps Management > Smart Card Authentication > Configure. 2 If you are using Simple Kerberos Setup, then clear the Use Device Kerberos Setup check box, and then apply the changes. 3 If you are using a Kerberos configuration file, then do the following: a From the Embedded Web Server, click Settings > Security > Security Setup > Kerberos 5. b Under Import Kerberos File, browse to the krb5.conf file, and then click Submit. Unable to authenticate users Make sure that the Realm specified in the Kerberos settings is in uppercase 1 From the Embedded Web Server, click Settings > Apps > Apps Management > Smart Card Authentication > Configure. 2 For Simple Kerberos Setup, make sure that the Realm is correct and typed in uppercase. 3 If you are using krb5.conf file, then make sure that the Realm entries in the configuration file are in uppercase. Domain controller certificate is not installed Make sure that the correct certificate is installed on the printer For more information, see "Managing certificates and other settings" on page 24.