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Thomas TylerAug 22, 2025
What to do if Ricoh AFICIO MP C305SP All in One Printer displays 'Authentication has failed'?
- SShawn CarneyAug 22, 2025
If your Ricoh All in One Printer displays "Authentication has failed.", it means the entered Login User Name or Login Password is not correct. For details about the correct Login User Name and Login Password, see Security Guide .