Hello all. I am having an issue with a page that contains a form. The form submits to itself. The button used to submit the form is a <button..> with an onclick that validates some data then does a document.frm1.submit(); if all data checks out. I have these headers set: header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); Header('Pragma: no-cache'); My issue is that sometimes, and I cannot recreate regulary, after clicking the button I get a "Page Cannot Be Displayed" error. I click the browser's back button, and all form data is gone, I hit the button and again "Page Cannot Be Displayed". I can hit back and then the button over and over with same "Page Cannot Be Displayed". Now when on the "Page Cannot Be Displayed" if I refresh it first asks if I want to resubmit data, I click yes and the page will load but the data submitted is not there. NOW if I hit back and then hit the button it will submit just fine. The refresh is needed to fix the issue. I have not found a pattern that will cause the "Page Cannot Be Displayed" error. Any help would be greatly appreciated.