Concurrent downloads limit in metro app


  • In my metro application, I am creating some parallel background downloads using

        BackgroundDownloader^ downloader = ref new BackgroundDownloader();

    Very often, I get an exception at this point which says:

    > First-chance exception at 0x75424B32 in WWAHost.exe: Microsoft C++ exception: Platform::COMException ^ at memory location 0x03C5E470.
    > HRESULT:0x8000000E A method was called at an unexpected time.
    > WinRT information: Quota for maximum number of concurrent operations
    > exceeded. Wait for an operation to complete before starting new ones.
    > If there is a handler for this exception, the program may be safely
    > continued.

    I have no clue on this limit and there is no documentation on msdn whatsoever about it. Did somone come across such a situation before? Any ideas are welcome.
    Tuesday, September 11, 2012 9:32 AM

All replies

  • Hello,


    Thanks for your feedback, I will involve more experts to investigate it.


    Best regards,


    Jesse Jiang [MSFT]
    MSDN Community Support | Feedback to us

    Wednesday, September 12, 2012 6:36 AM
  • Hi,

    I have come across the same issue while using background transfer API. Any further updates on why this happens and the workaround for the same?

    Tuesday, September 18, 2012 1:21 AM
  • Same for me too
    Wednesday, October 17, 2012 4:52 AM
  • Hi Jesse Jiang,

    Any Update on this?



    Friday, January 11, 2013 9:21 AM
  • Please reset the Manifest for Enterprise Authentication and then build the App and release...
    Monday, February 4, 2013 7:05 AM
  • Same issue for me (WinJS 2.0, Windows 8.1). It happens time to time and number of files to download is about 60-70
    Friday, August 29, 2014 7:10 AM