The captcha loads and works fine until you click Login.
When clicking Login I receive: CAPTCHA verification failed due to internal error: http
And nothing else. As it's not descriptive I'm at a loss on what to try.
Has anyone seens this happen before?
Probably you can't establish http connection to the outside world from your server. Do you use a hosting provider (webspace, e.g.) or do you have ssh access to your server?
Yup get the same error, after upgrading to 2.28 from my old 2.22 instance. Firewall is blocking nothing
I'm getting the same error: "CAPTCHA verification failed due to internal error: http"
This is on MediaWiki 1.27. As with the poster above, the server can make outbound connections on HTTP and HTTPS. Anyone have any ideas?
This was my resolution to the issue.
The "internal error: http" message means simply that ConfirmEdit failed to execute an http request against the Google servers, which could happen for a number of reasons. The MW and PHP logs don't seem to be helpful in determining why. If you save the following as a PHP script on your web site and browse to it, it will execute an http request, similar to how ConfirmEdit tries to do, and return the result of curl_error() which should give more detailed error information:
<html>
<head>
<title> cURL Test Script </title>
</head>
<body>
<?php
$Url='https://wtfismyip.com/text';
if (!function_exists('curl_init'))
{
print 'cURL not installed';
}
else
{
$ch = curl_init($Url);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
if(curl_exec($ch)) { print 'OK';}
else { print curl_error($ch);}
curl_close($ch);
}
?>
</body>
</html>
In my case, the error was "SSL certificate problem: unable to get local issuer certificate". It turns out this is because a default PHP install (at least on Windows) doesn't have access to any trusted root certificates, so can't validate SSL connections. The fix was to download a set of root certificates provided by the cURL project at https://curl.haxx.se/docs/caextract.html, and add the following to php.ini:
[curl] curl.cainfo = C:\SomeFolder\cacert.pem
Thank you L Andy, you have saved me. I was trying to solve this for 3 days.