Telerik Async Upload fails in IE11 on load balancer

4 posts, 0 answers
  1. ss
    ss avatar
    6 posts
    Member since:
    Jan 2015

    Posted 07 Apr Link to this post

    We are using telerik control in our app with windows authentication and upload fails in load balancer with ie11. With Compatibility view it doesn't work either.     

    One of the solution that has been posted in the online is to issue a HEAD or a GET request prior to the POST.

    How can this be done with the Telerik control?

     

    Thanks!

  2. Veselin Tsvetanov
    Admin
    Veselin Tsvetanov avatar
    290 posts

    Posted 12 Apr Link to this post

    Hello,

    As the specified unexpected behavior could be related to a known bug in Internet explorer, I would suggest you to try disabling the FileAPI that RadAsyncUpload uses by placing the following script on your page:
    <script type="text/javascript">
        Telerik.Web.UI.RadAsyncUpload.Modules.FileApi.isAvailable = function () {
            return false;
        }
    </script>

    Regards,
    Veselin Tsvetanov
    Telerik
    Do you need help with upgrading your ASP.NET AJAX, WPF or WinForms projects? Check the Telerik API Analyzer and share your thoughts.
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  4. ss
    ss avatar
    6 posts
    Member since:
    Jan 2015

    Posted 12 Apr in reply to Veselin Tsvetanov Link to this post

    Thanks for your response. 

    Can you please explain what .isAvailable will do and how is it going to help us solve the problem?

    Thanks again!

  5. Veselin Tsvetanov
    Admin
    Veselin Tsvetanov avatar
    290 posts

    Posted 13 Apr Link to this post

    Hi,

    File.Api.isAvailable tells the RadAsyncUpload whether the browser supports the Web File API. With the suggested override it will always return false, so the RadAsyncUpload will use one of the other available Upload modules.

    Regards,
    Veselin Tsvetanov
    Telerik
    Do you need help with upgrading your ASP.NET AJAX, WPF or WinForms projects? Check the Telerik API Analyzer and share your thoughts.
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