Joomla native captcha (reCAPTCHA) not working

Issue

Integrated Joomla captcha (reCAPTCHA) does not appear in the front end.

Joomla Registration Form

Resolution

Issue was caused by invalid reCAPTCHA API URL address.

To fix had to make changes to recaptcha.php file located in plugins/captcha/recaptcha

Line 24:

Change: const RECAPTCHA_API_SERVER = "http://api.recaptcha.net";

To: const RECAPTCHA_API_SERVER = "http://www.google.com/recaptcha/api";

Joomla registration with reCAPTCHA

Joomla 2.5.16
12.2013

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