This happens if “temporary admin” mode is enabled. Go to Admin Settings → Security → Admin Lock and set to Off .
The default login for this series is typically the machine's print speed (50 ppm for the M3550idn) followed by kyocera m3550idn default password work
Note: For many Kyocera models, the default panel password is the print speed followed by two zeros (e.g., 50 ppm becomes 5000). This happens if “temporary admin” mode is enabled
or simply the speed itself as both the username and password. Command Center RX (Web Interface): (case-sensitive) (case-sensitive) Older or non-RX web interfaces may use as the password. Аргус Мастер Credential Troubleshooting or simply the speed itself as both the username and password
This is where the search for begins. Many users assume the default password will grant instant access, only to find that it doesn't work . Why? Because Kyocera changed its security policies.
Consider updating passwords regularly to maintain security.
Summary