VICIdial Error: API Authentication Failed — Cause & Fix

Error Summary

Error Message

API Authentication Failed

Severity

Warning

Component

Web

What Causes This Error

A VICIdial API call (from an external CRM, reporting tool, or integration) is failing authentication. Causes include: expired or revoked API credentials, IP address of calling system not whitelisted in VICIdial, API user lacks required permissions, or the API endpoint URL is incorrect.

How to Fix It

  1. 1
    Check API user configuration: Admin > API Users
  2. 2
    Verify the API user is active and has the required permissions
  3. 3
    Check allowed IP for the API user — must match the calling system's IP
  4. 4
    Verify API URL format: https://VICIDIAL_SERVER/vicidial/non_agent_api.php
  5. 5
    Test API call manually with curl: curl 'https://SERVER/vicidial/non_agent_api.php?source=test&user=API_USER&pass=API_PASS&function=version'
  6. 6
    Check Apache logs for 403 or 401 errors: grep 'non_agent_api' /var/log/apache2/access.log
  7. 7
    Reset API password if credentials may have been compromised

How to Prevent It

Document all API integrations with their credentials and IP requirements. Implement API key rotation schedule. Monitor API error rates in Apache logs. Use least-privilege API users for each integration.

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Frequently Asked Questions

What causes the VICIdial "API Authentication Failed" error?
A VICIdial API call (from an external CRM, reporting tool, or integration) is failing authentication. Causes include: expired or revoked API credentials, IP address of calling system not whitelisted in VICIdial, API user lacks required permissions, or the API endpoint URL is incorrect.
How do I fix the VICIdial "API Authentication Failed" error?
Check API user configuration: Admin > API Users Then: Verify the API user is active and has the required permissions Then: Check allowed IP for the API user — must match the calling system's IP Then: Verify API URL format: https://VICIDIAL_SERVER/vicidial/non_agent_api.php Then: Test API call manually with curl: curl 'https://SERVER/vicidial/non_agent_api.php?source=test&user=API_USER&pass=API_PASS&function=version' Then: Check Apache logs for 403 or 401 errors: grep 'non_agent_api' /var/log/apache2/access.log Then: Reset API password if credentials may have been compromised
How can I prevent the "API Authentication Failed" error in VICIdial?
Document all API integrations with their credentials and IP requirements. Implement API key rotation schedule. Monitor API error rates in Apache logs. Use least-privilege API users for each integration.