Konica Minolta IEEE 802.1X Error 6
EAP authentication reached the credential stage but the identity, password, certificate, or related credential was rejected.
Error meaning
EAP authentication failed because of identity, password, certificate, or related credentials.
This meaning is tied to the reviewed family/platform and subsystem below; do not reuse the number or wording by itself on a different printer family or protocol.
Applies to
bizhub C287/C227
- bizhub C287
- bizhub C227
Common formatting
These are formatting/lookup aliases for this reviewed condition, not separate error pages.
- 6
- ieee8021x-6
What usually causes it
- The saved 802.1X user name or password is wrong, expired, or no longer permitted.
- A client certificate required by the chosen EAP method is missing, expired, or not associated with the expected identity.
- The RADIUS policy rejects the printer's account, certificate, or device identity even though EAP negotiation starts normally.
What to try
Check the credential type used by this EAP profile
Determine whether the network expects a user name/password, a client certificate, or both. Do not substitute credentials from a different Wi-Fi profile.
Re-enter the identity and password if they are used
Confirm spelling, domain or realm formatting, and whether the account password recently changed or expired.
Check the client certificate when certificate authentication is required
Verify the certificate is present, valid for this device, and not expired before importing or replacing anything.
Use the RADIUS rejection reason
Retry once, then have the network administrator read the server log. The rejection reason is more useful than repeatedly changing printer settings.
After each corrective action
Retry the same operation that produced 6. If it now works, stop there rather than changing unrelated printer, network, supply, or service settings.
If the code returns
If code 6 returns after the known-good credential or certificate is installed, use the RADIUS log to determine whether the server is rejecting identity format, account policy, certificate trust, or another credential check.
When service may be needed
This is an authentication-policy problem unless the printer cannot retain valid credentials. Avoid bypassing 802.1X controls; use network administration or Konica Minolta support for persistent failures.
Continue with guided troubleshooting
If the printer still is not working after the reviewed checks, carry this verified error context into the guided troubleshooter.
Related information
Verified source
Official Konica Minolta product-family user guide. Candidate meanings are paraphrased from protocol-specific code tables; manufacturer prose must not be copied into public pages.