Kyocera printer message: "Cannot connect to Authentication Server"

Before you try the solution

1. 1. Copy the complete message exactly as shown, including any code, letters, or punctuation the panel puts around it.
2. 2. Find the printer's exact model number. The same-looking code can mean something different on another model family.
3. 3. Let the current print, scan, or update operation stop before touching controls, paper paths, or covers.

Manufacturer-documented solution

If the error is still there

1. 1Return to the screen or job that produced the message and check whether the code has cleared.
2. 2If "Cannot connect to Authentication Server" returns, do not repeat a risky procedure. Record when it appears and check the documentation for the exact model.
3. 3If the documented action does not clear "Cannot connect to Authentication Server", contact Kyocera support or a qualified printer technician with the model number and complete message.

Other Kyocera error codes

• Cannot connect.The Wi-Fi or Wi-Fi Direct connection did not complete. Kyocera's documented action is to check the settings and the signal conditions. This is a wireless-association failure at the machine, distinct from the authentication-server messages that appear when the network is fine but a credential or the machine's clock is wrong.
• 1102"Login Username and/or Password is incorrect" for the scan-to-email/SMB destination credentials — a specific scan-job authentication failure, not a general network connection failure.
• Low temperature. Adjust room temp.The room is too cold for the machine to operate within specification. Kyocera's documented action is to adjust the temperature and the humidity of the room. Worth knowing before a cold-garage or unheated-office machine is diagnosed as faulty.
• Machine failure. Call service.An error has occurred in the machine. Kyocera's documented instruction is to make a note of the error code shown on the message display and contact your service representative. This is the guide's answer for numeric machine faults generally: Kyocera does not publish the meanings of individual C-codes to users, so the code is information for the technician rather than something to act on yourself.
• Paper jammed above Cassette 1.A paper jam has occurred. Kyocera documents that the machine stops and indicates the location of the jam on the screen, and instructs you to leave the machine switched on, select Help on the screen, and follow the on-screen instructions to remove the paper. Leaving it powered on is the part people get wrong — the guided sequence depends on the machine knowing where the sheet stopped.
• Replace MK.The maintenance kit is due. Kyocera documents replacement of the maintenance kit parts as necessary every 100,000 pages of printing, and states that it requires professional servicing — the guide's instruction is to contact your service representative rather than to fit it yourself. Like other page-counter messages this is a scheduled interval, not a detected failure.