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Editorial Team
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Asked: 2026-06-12T18:53:07+00:00

Valums file-uploader (now called Fine Uploader ) doesn’t work under Internet Explorer 9 but

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Valums file-uploader (now called Fine Uploader) doesn’t work under Internet Explorer 9 but wors fine under Chrome.

So under IE it shows the name of the file and button CANCEL and no % of uploading.

Any clue?

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UPDATES:

Solution is here as well MVC Valums Ajax Uploader – IE doesn't send the stream in request.InputStream

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1 Answer

  1. Editorial Team

    I know this question was filed under asp.net specifically, but it came up when I searched for “valums ajax upload IE9”, so I’ll post my fix here in case it helps anyone like myself regardless of language:

    I was returning a JSON response from the AJAX upload request with a “application/json” content header. IE9 does not know what to do with “application/json” content (but Chrome/FF/etc do).

    I fixed this by making sure to return a “text/html” MIME type http header on my json response from the server.

    Now IE is no longer trying to download the response! Cheers

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