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iFrames suddenly quit working

Forums > Performance and Optimization
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Olly Hodgson

Growing Member



Posts:52
Growing Member




11/12/2019 7:45 PM

    The reason is you are telling the website to remove an X-Frame-Options header, then add a different X-Frame-Options header, but you're still ending up with two.

    The fact your remove step isn't doing anything suggests the offending X-Frame-Options heading is being added after your code has run. That sounds like something a firewall or other network security software might do - but I don't know how they're set up. I suspect if you've got IT Ops people where you work, they'd be the people to speak to. 

    If it is something a DNN module upgrade has caused, it's almost certainly on http://healthtest.co.santa-cruz.ca.us/ installation, not on your intranet.






    Michael Tobisch

    Veteran Member



    Posts:1124
    Veteran Member




    11/13/2019 4:42 AM

      I completely agree with Olly. If a module would add the header, IIS would remove it (because of that remove line), and when two headers are delivered, the second is added after the whole process most propably.

      In this case, there is nothing you can do in IIS. But you can test it, if you browse the website http://healthtest.co.santa-cruz.ca.us/ on the server where it is installed. Add something like

      127.0.0.1    healthtest.co.santa-cruz.ca.us

      to your hosts-file (normally under C:\windows\system32\drivers\etc, you may edit this with any text editor) to avoid a DNS request.

      Then check the headers you get there (and remove the line above from the hosts file after the test).

      Happy DNNing!
      Michael

      Michael Tobisch
      DNN★MVP

      dnnWerk Austria
      DNN Connect





      Tom Melkonian

      Advanced Member



      Posts:169
      Advanced Member




      11/15/2019 12:46 PM
        Thanks for your help looking into this -

        Guess what - I just heard back from Tycho de Waard on the DNNConnect Facebook group - he found that DNNSharp Action Form version 5 was causing this issue. He provided me with an upgrade to the module , which I tried on our test server, and it works!. The problem is fixed.
        To be clear - this is on the website serving the content that appears in the iFrame.

        Thanks again for your help!
        -Tom





        Michael Tobisch

        Veteran Member



        Posts:1124
        Veteran Member




        11/18/2019 1:50 AM

          Tom,

          you're welcome, and I am happy that you found the issue. As I don't use DNNSharp Action Form, I did not know about this issue... thanks for telling us.

          Happy DNNing!
          Michael

          Michael Tobisch
          DNN★MVP

          dnnWerk Austria
          DNN Connect





          Olly Hodgson

          Growing Member



          Posts:52
          Growing Member




          11/19/2019 1:53 PM

            Hooray! So glad you got this figured out :)






            Tom Melkonian

            Advanced Member



            Posts:169
            Advanced Member




            11/22/2019 9:44 AM
              Thanks again both of you!!
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