NetworkError occurred when opening a Blob URL using XHR

Fixed Issue #7754888


Tomohito Y.
Jun 1, 2016
This issue is public.
Found in
  • Microsoft Edge
Found in build #
Reported by 1 person

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Steps to reproduce

“NetworkError” occurred when opening a Blob URL(blob scheme) using XMLHttpRequest.


XHR request has completed with no error.

Mozilla Firefox 48 and Google Chrome 52 works as expected.


XHR throws "Network Error".

Repro code:

blob = new Blob(['Hello!Konnichiwa!'], { type: 'text/plain' });
// => [object Blob]{size: 17, type: "text/plain"}

blobUrl = URL.createObjectURL(blob);
// => "blob:79308B01-1F99-4474-AE59-205AAAAD71D3"

xhr = new XMLHttpRequest();
// => [object XMLHttpRequest]{DONE: 4, HEADERS_RECEIVED: 2, LOADING: 3, msCaching: "auto", onabort: null, onerror: null, onload: null, onloadend: null, onloadstart: null, onprogress: null, onreadystatechange: null, ontimeout: null, OPENED: 1, readyState: 0, response: "", responseText: "", responseType: "", responseXML: null, status: 0, statusText: "", timeout: 0 ...}'GET', blobUrl);
// => undefined

// => NetworkError

// => ""


Comments and activity

  • Microsoft Edge Team

    Changed Assigned To to “Brad E.”

  • I am not able to repro this in our current stable build of Edge. I get two double quotes returned when I run this repro code.

    What version number of Edge are you seeing this NetworkError message with?

    All the best,
    The MS Edge Team

  • Hi, thank you for your comment.

    I seen that message when I previously tested in build 14352.
    Today, I tested again in build 14393.3 and got no errors. :-)

  • Microsoft Edge Team

    Changed Status to “Fixed”

  • Excellent :)

    Looking forward to more feedback from you in the future. For now we will resolve the item as fixed.

    Best regards,
    The MS Edge Team

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