Invalid authenticity token error

When logging into the Symphony Help Centre, a user may experience a Forbidden - Invalid authenticity token error.


This error occurs when the browser does not allow third-party cookies from

Enable third-party cookies in Google Chrome:

  1. Open a Chrome browser and navigate to chrome://settings.
  2. Select Privacy and security tab and access the Third-party cookies section.
  3. In the results, scroll down and select Add next to Sites allowed to use third-party cookies.

  1. Enter [*.] and select .

  1. Exit the Settings page, refresh the browser and confirm the Forbidden - Invalid authenticity token error is no longer displayed. You may need to clear your cache in order for these changes to take effect. See how to clear your cache.

If the error persists, please contact the Symphony Support team at and inform them you are experiencing issues with an invalid authenticity token error.