A common mistake is creating users in the admin interface but neglecting to properly assign phone IDs and passwords. If you have created users, remote users, and campaigns in the VICIdial admin but receive "Login incorrect" errors when accessing http://your-server/agc/vicidial.php , the issue is almost always related to missing or mismatched phone credentials.

Before agents can log in to vicidial.php , you must have a working VICIdial installation with Asterisk properly configured. The web server (Apache or Nginx) must have PHP version 7.x or 8.x (depending on your VICIdial build) with MySQL or MariaDB connectivity to the VICIdial database. Recent VICIdial development updates in 2025 and 2026 have focused heavily on PHP8 compatibility, with numerous patches applied to keep the AGC stable on modern PHP versions.

The AGC feature in Vicidial, powered by vicidial.php, offers several benefits:

Always verify that phone login_user and login_pass exactly match what you created in the database, and confirm that each agent is assigned to at least one campaign.

JavaScript execution failure or a blocked network port.

Because agc/vicidial.php is a powerful file that interacts with the database and the Asterisk server, it is a prime target for security audits.

Verifying user credentials and campaign availability.