IE11 intermittent Yellow Dot and freeze

3 posts, 0 answers
  1. Eli
    Eli avatar
    11 posts
    Member since:
    Mar 2011

    Posted 11 Apr 2016 Link to this post

    We have had problems with RadAsyncUpload in IE11 where it will give a yellow dot and freezes when uploading files.  This has been happening since our users started using IE11 (on Windows 8.1).  Previously they used 10 without issue.

    This does not happen if we direct them to Chrome.  The only way around it we have found is to turn off the FileApi Module for IE.  We do utilize drag and drop so when that module is disable that functionality is lost.  I am using the latest version of the controls 2016 Q1.

    I also tried to emulate IE10, but that does NOT solve the issue.  We run with ie=edge meta tag.

    The problem is intermittent and I have not been able to reproduce it myself.  I have seen some similar threads on problems like this including this one:

    Is there any kind of known issue or workaround?  It is difficult to troubleshoot given the intermittent nature.

    <telerik:RadAsyncUpload  Skin="Default" OnClientFilesUploaded="saverecord" ID="faupload" runat="server"
            MultipleFileSelection="Automatic" TargetFolder="\\xxxxxx\xxxxxx"
            Width="221px" PostbackTriggers="bSave,bSave2" 

  2. Eli
    Eli avatar
    11 posts
    Member since:
    Mar 2011

    Posted 11 Apr 2016 in reply to Eli Link to this post

    I just saw this thread as well.  (feel free to merge thread)

    That matches my issue as we are also using Windows Authentication...

    A bug is listed and reported to Microsoft Connect, but that bug report is considered closed and "Won't fix", so does that mean it simply is not going to work?  Are there any options to get Drag and Drop on IE 11?

  3. Veselin Tsvetanov
    Veselin Tsvetanov avatar
    590 posts

    Posted 14 Apr 2016 Link to this post

    Hi Eli,

    As the Drag-and-drop functionality relies on the HTML 5 FileAPI, there is no way to enable it when having NTLM Windows authentication for your app / web-site.

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