How to resolve HTTP Error 500.24?

After installing Janrain's latest Drupal 7 module in our application, we are getting an error message "Error Connecting Engage. Please verify your internet connection and try again." What is the solution for this?

• Dear Team, Thanks for developing this great product. We have properly configured Janrain and Providers. Now installed Janrain's latest Drupal 7 module in our application. When we tried to save the changes by giving the API key, we are receiving the below error message. Error message Error contacting Engage. Please verify your internet connection and try again On getting in to code further,  we got the below JSON response with an empty "data" facet stdClass Object (     [request] => POST https://rpxnow.com/plugin/lookup_rp HTTP/1.0 Referer: http://localhost/arena User-Agent: Janrain_Engage_Drupal_Module Proxy-Authorization: Basic TVNBVFxDQjExNjEyMjozTmFzdXNUZWNoQGNvbSM= Host: http://rpxnow.com Content-Length: 105 apiKey=374a10dd623986efb91e38ecdb8302cf9578c735&format=json&pluginName=Drupal&pluginVersion=7.x-2.3-beta4     [data] =>     [protocol] => HTTP/1.0     [status_message] => OK     [headers] => Array         (             [content-type] => text/html             [refresh] => 0; URL=https://rpxnow.com/plugin/lookup_rp         )     [code] => 200 ) The empty "data" facet in the above JSON response seems to create this issue. I guess the issue must be with my local web server "Apache" which was installed through XAMPP. Please give me some suggestion resolve this issue. Its very urgent for our project.

• Answer:

  AFAIK - RPX does not work from the localhost. You need to have your site on a web accessible domain for RPX to work.