Getting the following in the dev tools console and the recaptcha control is not rendering.

reCAPTCHA couldn't find user-provided function: loadReCaptchas

Recently upgraded from Sitecore 9.0.2 to 10.2. We upgraded the Sitecore Forms Extensions to version sc10.1-4.0.2. The ReCaptcha control will not load. On Content Management servers I am able to view the ReCaptcha image but the control itself will not load when viewing the form on a page. When debugging, the output from the Recaptcha.cshtml looks like the following:

<div id="fxb_fe2d6775-2160-428c-9065-8e3f7565b206_Fields_d4073a01-591d-4e0d-8d09-2dc6d78e83a4__CaptchaValue_wrapper"></div>
<input id="fxb_fe2d6775-2160-428c-9065-8e3f7565b206_Fields_d4073a01-591d-4e0d-8d09-2dc6d78e83a4__CaptchaValue" name="fxb.fe2d6775-2160-428c-9065-8e3f7565b206.Fields[d4073a01-591d-4e0d-8d09-2dc6d78e83a4].CaptchaValue" type="hidden" class="fxt-captcha" data-val-required="Please confirm you are not a robot." data-val="true" />
<span class="field-validation-valid" data-valmsg-for="fxb.fe2d6775-2160-428c-9065-8e3f7565b206.Fields[d4073a01-591d-4e0d-8d09-2dc6d78e83a4].CaptchaValue" data-valmsg-replace="true"></span>

<script type="text/javascript">
  var reCaptchaArray = reCaptchaArray || [];
    function() {
      var _captchaInput = window.document.getElementById('fxb_fe2d6775-2160-428c-9065-8e3f7565b206_Fields_d4073a01-591d-4e0d-8d09-2dc6d78e83a4__CaptchaValue');
          'sitekey': 'REMOVED-PROPERLY-ADDED',
          'callback': function(token) {
            _captchaInput.value = token;
          'expired-callback': function(args) {
            _captchaInput.value = '';
  <script src="https://www.google.com/recaptcha/api.js?onload=loadReCaptchas&render=explicit&hl=en" async defer></script>

Any hints on what could be preventing the control from loading properly? screenshot of the message in Console:enter image description here

enter image description here

  • Do you recaptcha icon at the right bottom corner of your screen?
    – Anton
    Commented Mar 7, 2023 at 21:15
  • If no then any browser console logs will be useful.
    – Anton
    Commented Mar 7, 2023 at 21:16
  • @Anton I will try your version difference suggestion below. I do not see any icons. When trying to submit the form, it does ask me to confirm I'm not a robot, but there's no option to do such thing. See screenshot above.
    – gjakovaime
    Commented Mar 7, 2023 at 21:52
  • another guess: Do you still has same domain names? Do these domains are allowed for these domains?
    – Anton
    Commented Mar 7, 2023 at 21:56

1 Answer 1


The reason for this error is a missing callback function that should be called once the reCaptcha control is loaded. The function name is specified in the script tag:

<script src="https://www.google.com/recaptcha/api.js?onload=loadReCaptchas ...

In previous versions of Sitecore Forms Extensions the callback function was defined in the same ReCaptcha.cshtml file as the field HTML markup. Starting from version 9.2 this function exists in the file /sitecore%20modules/Web/ExperienceForms/scripts/formsextensions.validate.js and it looks like the browser can't find this function on your page.

Please check the following potential reasons:

  • You should see that the JavaScript file /sitecore%20modules/Web/ExperienceForms/scripts/formsextensions.validate.js loads correctly in the Network tab of browser Developer Tools. If this file does not exist or the request blocked, it will trigger this error.
  • If the JavaScript file is loaded correctly, make sure that it is not cached and contains the function loadReCaptchas. You can compare your file with the correct version in GitHub.
  • If you do not see any request to formsextensions.validate.js and there is no such <script> tag in the raw HTML output of you page, check that the processor Feature.FormsExtensions.Fields.JavascriptLoader and the config Feature.FormsExtensions.Processors.config are included in your Sitecore configs folder. Your page layout file should also contain the helper @Html.RenderFormScripts() before the closing </body> tag to include the necessary scripts for forms.
  • 1
    In my case, we were manually adding the sitecore javascript files instead of using @Html.RenderFormScripts(). Fixing this resolved the issue. Thank you for a very thorough response.
    – gjakovaime
    Commented Mar 8, 2023 at 17:13

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