Telerik Reporting Print issue in IE11 and Firefox

4 posts, 0 answers
  1. Venkateswar
    Venkateswar avatar
    2 posts
    Member since:
    Aug 2013

    Posted 16 Jun 2014 Link to this post

    I am using Telerik Reporting Q3 2011 SP1 in my project. I am facing an issue with the Telerik Report Print option on IE 11 and Firefox 30.0 browsers. When I click on Print, it tries to open it as a PDF. For Chrome, it works fine.  

    I went through some forums on your site and found that it’s a known issue and will get fixed in Q3 2013 SP1 release. As per the release history on your site, it has been fixed in Q3 2013 SP1 release. Now I have downloaded the trial version of Q3 2013 SP1 and upgraded my reports. While testing on IE 11 and Firefox 30.0, I am getting the same issue. But it works well on Chrome.

    I have attached a snapshot of the issue. Please look in to the issue. 



  2. Peter
    Peter avatar
    1631 posts

    Posted 18 Jun 2014 Link to this post

    Hi Rao,

    The issue is only resolved for IE 11 as elaborated in the Q3 2013 SP1 release notes. About Firefox we are still waiting Firefox team to resolve Bug 840439 - Expose PDF.JS as a plugin navigator.plugins when enabled. Once this bug is resolved we will be able to correctly determine the active plugin and execute directly the True Print operation. In the meantime check out the suggested workaround in Print button in Firefox starts PDF download forum thread.

    About still having the issue in IE 11 please clear the browser cache and make sure the browser is configured as elaborated in the True Print help article.


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  3. Eric
    Eric avatar
    6 posts
    Member since:
    Mar 2014

    Posted 18 Mar 2016 in reply to Peter Link to this post

    The band-aid fix mentioned in 'Print button in FireFox starts PDF download' does not trigger. Here is the code we are using:


    <telerik:ReportViewer ID="ReportViewer1" runat="server"
                        <script type="text/javascript">
                            GetBrowserHelper = function() {
                                console.log('GetBrowserHelper triggered');
                                if (window.navigator) {
                                    var userAgent = window.navigator.userAgent.toLowerCase();
                                    console.log('userAgent', userAgent);
                                    if (userAgent.indexOf("msie") > -1 || (userAgent.indexOf("mozilla") > -1 && userAgent.indexOf("trident") > -1)){
                                        console.log('browser: ie');
                                        return new IEBrowserHelper();
                                    else if (userAgent.indexOf("firefox") > -1){
                                        console.log('browser: firefox');
                                        return new FireFoxHelper();
                                    else if (userAgent.indexOf("chrome") > -1) {
                                        console.log('browser: chrome');
                                        return new ChromeHelper();
                                    else {
                                        console.log('browser: other');
                                        return new OtherBrowsersHelper();
                                return null;

  4. Stef
    Stef avatar
    3611 posts

    Posted 23 Mar 2016 Link to this post

    Hi Eric,

    The Javascript method suggested by my colleague in the Print button in Firefox starts PDF download forum thread, works as expected with the old ASP.NET WebForms ReportVIewer in Firefox.

    Note that the web viewers print functionality depends on the Adobe PDF plugin available in most browsers. In Firefox, the Adobe PDF plugin is not used by default, which causes the print operation to falls back to download of the generated PDF file. Please check the linked article and verify browsers are configured to load the received PDF file in order the print operation to be successful.

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