016-501WorkCentre 3655i

Xerox WorkCentre 3655i Error 016-501: Auth Fix

The Xerox WorkCentre 3655i error 016-501 is an authentication failure, occurring when the printer cannot authenticate with a network destination like an SMB folder. This often happens after password updates in your corporate domain, causing the printer's saved credentials to become invalid.

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Common causes

  • 1Invalid username or password for SMB scan.
  • 2Expired password on the domain account used.
  • 3Missing read/write permissions on the target folder.
  • 4Recent domain security policy update.

Solutions

Diagnóstico rápido

If you changed your network password recently, the printer is definitely using outdated credentials. Update them in the CentreWare interface.

Solución paso a paso

  1. Log into CentreWare using your printer's IP address.
  2. Navigate to the address book to find the failing scan destination.
  3. Update username and password with your current network credentials.
  4. Test the connection to confirm the server accepts the update.

Prevención y mantenimiento

Use a dedicated service account for scanning that does not have a mandatory password expiry.

Cuándo llamar a un técnico

If the configuration is verified and you still receive an 016-501 error, consult your network admin about domain-level blocks or firewall policies.

Ficha técnica del equipo

Steps to follow

  1. 1

    Validate credentials

    Check username/password in address book settings.

  2. 2

    Verify permissions

    Ensure the user account has access to the destination.

  3. 3

    Test access

    Run the connection test in the printer panel.

Frequently asked questions

It means the target server rejected the provided credentials or the printer lacks necessary access permissions.

Access the CentreWare web interface via browser and update the address book entry.

Yes, common in corporate environments with password rotation policies.

Usually, this is a simple configuration fix you can do via the web portal.