What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    IE 7. Content was blocked because it was not signed by a valid security certificate.

    Asked by AllSaints_ATL on November 22, 2013 at 12:48 PM

    We often have users complain about receiving the following error:

    Content was blocked because it was not signed by a valid security certificate.

    I've set the form(s) in question to use https://secure.jotformpro.com/ as the URL, and have also tried https://secure.jotform.com/, but we continue to receive calls about this error.

    The form in question is this one:


    Located on this page of our web site:


    The error only fires once the person has submitted the form. Naturally they freak out and think something's trying to hack their computer or that their payment didn't go through or whatever. Our business manager is tired of trying to calm people down when they call. :-)

    Thanks for any suggestions or fixes you can offer.


    Page URL:

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    JotForm Support

    Answered by Mike_T on November 22, 2013 at 02:41 PM

    Thank you for contacting us.

    I was able to reproduce this error in outdated Internet Explorer 7. However, when I used the direct ssl form link, it was not showing any error. The iFrames use direct form links, so there is a chance that the iFrame code might help.

    Please try to use secure iFrame code on your site to see if that makes any difference:

    If this does not work, please let us know.

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    Answered by AllSaints_ATL on November 22, 2013 at 03:04 PM

    Thanks, Mike_T -- I'll give that a try.