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I was trying to post an answer, but then it asked for Captcha to check whether I am human. The Captcha loader is shown, but the Captcha is not loaded and I couldn't post the answer.

When I checked the ajax call using the Developer Toolkit, it showed the request http://api.recaptcha.net/js/recaptcha_ajax.js?_=1383826516487 returned a 404 error.

Please check the recaptcha is working before showing the captcha.

Edit 1 :

When clicking on the submit in the question page a request is given to the url - http://stackoverflow.com/questions/19834440/answer/submit

The response is as follows

{
    "success": false,
    "captchaHtml": "\r\n\r\n<h1>Human Verification</h1>\r\n\r\n<form>\r\n    \r\n    <div style=\"float:left; width: 460px; margin-right: 10px; min-height: 230px;\">\r\n            <a href=\"http://www.youtube.com/watch?v=mvrva8NoMLM&amp;fmt=18\" target=\"_blank\">\r\n                <img src=\"//cdn.sstatic.net/stackoverflow/img/captcha-conchords-robots.jpg\" alt=\"The Humans Are Dead by the Flight of the Conchords\" style=\"width: 100%; margin-bottom: 10px;\" />\r\n            </a>\r\n\r\n        \r\n        <div id=\"recaptcha\" style=\"min-height: 100px;\">\r\n            <img src=\"/content/img/progress-dots.gif\" title=\"loading...\" alt=\"loading...\" />\r\n        </div>\r\n\r\n        <input type=\"hidden\" name=\"s\" value=\"39cede1a-5a47-46e7-9194-74c65861c615\" />\r\n        <br />\r\n        <input id=\"btn-captcha\" style=\"font-weight: bold;\" type=\"submit\" name=\"post\" value=\"&nbsp;I&#39;m a Human Being&nbsp;\" disabled=\"disabled\" />\r\n        <br />\r\n        <div class=\"form-error\"></div>\r\n    </div>\r\n    <div style=\"float: left; width: 350px;\">\r\n        <div class=\"module\">\r\n    <h4>Are you a human being?</h4>\r\n    <p>We apologize for the confusion, but we can&#39;t <i>quite</i> tell if you&#39;re a person or a script.</p>\r\n    <p>Please don&#39;t take this personally.</p>\r\n    <p>Bots and scripts can be remarkably lifelike these days!</p>\r\n    <p>Enter the <a href='http://en.wikipedia.org/wiki/Captcha' target='_blank'>CAPTCHA</a> displayed below, and we&#39;ll be out of your way.</p>\r\n</div>\r\n    </div>\r\n    <br class=\"cbt\" />\r\n</form>"
}
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  • Where did you get that error exactly? Can you post the exact URL? Stack Overflow's Captcha page is fine and is using valid JS file Commented Nov 7, 2013 at 12:24
  • Trying to answer the question - stackoverflow.com/questions/19834440/…
    – Jithin
    Commented Nov 7, 2013 at 12:33
  • Well, can't reproduce. Hope a dev will have a look soon and solve the mystery. Commented Nov 7, 2013 at 12:37
  • 2
    What browser? What OS?
    – Oded
    Commented Nov 7, 2013 at 12:41
  • The URL: api.recaptcha.net/js/recaptcha_ajax.js is currently returning a 404. Additionally api.recaptcha.net/js/recaptcha_ajax.js has an invalid certificate, which will break lots of sites no doubt.
    – Craig
    Commented Nov 7, 2013 at 12:44
  • Is it not meant to be google.com/recaptcha/api/js/recaptcha_ajax.js? Commented Nov 7, 2013 at 12:45
  • @Oded I had this kind of issue at MSO about 4 hours ago, with FF 24 / Windows 7
    – gnat
    Commented Nov 7, 2013 at 12:46
  • @Oded Google Chrome - Version 29.0.1547.65 Ubuntu - Release 12.04 (precise) 64-bit - Kernel Linux 3.2.0-52-generic
    – Jithin
    Commented Nov 7, 2013 at 12:53
  • Very strange - what do you see when visiting stackoverflow.com/captcha ?
    – Oded
    Commented Nov 7, 2013 at 12:56
  • 1
    @Oded - I can see the captcha there.
    – Jithin
    Commented Nov 7, 2013 at 12:57
  • Good. Now, what page was it where you were not seeing it? On the question page itself?
    – Oded
    Commented Nov 7, 2013 at 12:58
  • And I can see the request in that page goes to google.com/recaptcha/api/js/… which works fine.
    – Jithin
    Commented Nov 7, 2013 at 12:58
  • @Oded : Yes on the question page. I refreshed the question page and tried to post the answer again and the same error, Captcha is not loading.
    – Jithin
    Commented Nov 7, 2013 at 13:00
  • Can you try emptying your browser cache? I suspect you have a stale copy of recaptcha's resources (we don't specify this url) Commented Nov 7, 2013 at 13:01
  • Alternatively - if you look in the source, you should find a url like http://www.google.com/recaptcha/api/challenge?k={some stuff here}. If you browser to that url, it returns some json that includes the server; for me that is 'http://www.google.com/recaptcha/api/' - what is it for you? Commented Nov 7, 2013 at 13:04

1 Answer 1

5

Yes, they moved the endpoint. This only affects the popup captcha. Fixing and deploying immediately.

6
  • Yes, its working now. Thanks :-)
    – Jithin
    Commented Nov 7, 2013 at 13:36
  • "they" meaning Google? Commented Nov 7, 2013 at 13:44
  • Hi. I had the same problem as OP, but it still keeps happening to me. The ajax call to get the captcha keeps returning 404 to me
    – gonzaw
    Commented Nov 8, 2013 at 4:07
  • @gonzaw I don't suppose you know which url is 404-ing? is it possible you have a block in place by a browser add-in? Commented Nov 8, 2013 at 10:11
  • The old endpoint had been deprecated since 2011. I suppose they finally switched it off. See groups.google.com/forum/#!topic/recaptcha/V7qswqBnA1o .
    – TvF
    Commented Nov 8, 2013 at 11:41
  • Hi. I don't know what happened, but now it didn't ask me for a reCaptcha and allowed me to post the question instantly.
    – gonzaw
    Commented Nov 8, 2013 at 17:31

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