Samsung CLX-8640ND - Authentication Failed. Please Contact the System Administrator

4.Troubleshooting
►ErrorCode
S6–3128
►Errormessage
802.1xauthenticationfailed.PleaseContacttheSystemAdministrator.
►Symptom
Networkerror.(Aauthenticator(e.g.switch)rejectedauthentication./Thereisnoresponsewhencheckingthe
pingtest.)
►Troubleshootingmethod
1)Changethemachine’s802.1xcredentials.
a)Select“MachineSetup”onthetouchscreen.
b)Select“Security”
c)Select“802.1x”
d)Selecttheproperauthenticationmodeforyournetworkenvironment.
e)Inputvalidcredentials.
2)TheSystemAdministratorshouldcheckifEthernetportandauthenticationserverwereconguredcorrectly.
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