IE 11: Error while sending Multipart Form Data request: Stream ended unexpectedly

Turned out a weird issue. This is how it's resolved.

• We had checkboxes at the end of the form. The mentioned issue was occurring when we do not select any of the checkboxes. The request was not getting formed correctly and hence server threw error.
• Added a hidden field at the end of the form (make sure this is the last form field) and assigned some value to it.

That' it. Worked like a magic!

More info here.

The issue you have mentioned has troubled me for a long time. I finally have a solution to the issue. IE appends an empty name form data at the end of the formData request object which gets parsed at the server and hence the error occurs.

Below was the form data request object which was sent before the fix:

-----------------------------7e3195134f056c
Content-Disposition: form-data; name="csrfToken"

8394D82F5A776708F13CDC6D4B4DE1485C1EC05625E63B2E
-----------------------------7e3195134f056c
Content-Disposition: form-data; name="ACTION"

DELETE_LOGO
-----------------------------7e3195134f056c
Content-Disposition: form-data; name="ORG_ID"

1879048492
-----------------------------7e3195134f056c
Content-Disposition: form-data; name=" 
-----------------------------7e3195134f056c--

In order to resolve the issue, added an extra hidden field at the end of the form element.

    <csrf:form name="OrgLogoEdit" METHOD="POST" ACTION="/logo" onKeyDown="" enctype="multipart/form-data" accept-charset="UTF-8">
        <INPUT TYPE = HIDDEN NAME = "<%= Control._ACTION %>" VALUE = "<%= OrganizationLogo._UPLOAD_LOGO %>">
        <INPUT TYPE = HIDDEN NAME = "<%= Control.ORG_ID %>" VALUE = "<%= organization.getId() %>">

        <div class="cropit-preview"></div>
        <input type="range" min="0" max="100" class="cropit-image-zoom-input" step="any">
        <input type="hidden" name="dummyIEField"> <!-- this dummy hidden field resolves the stream ended unexpectedly issue -->
    </csrf:form>

The request body is now sent as below which is parsed successfully:

-----------------------------7e3195134f056c
Content-Disposition: form-data; name="csrfToken"

8394D82F5A776708F13CDC6D4B4DE1485C1EC05625E63B2E
-----------------------------7e3195134f056c
Content-Disposition: form-data; name="ACTION"

DELETE_LOGO
-----------------------------7e3195134f056c
Content-Disposition: form-data; name="ORG_ID"

1879048492
-----------------------------7e3195134f056c
Content-Disposition: form-data; name="dummyIEField"


-----------------------------7e3195134f056c--

Hope this helps. Cheers !!

I had the same problem. I was having only the id attribute and missing the name attribute in the hidden input field which gave me the below error. Issue resolved after adding the name attribute to the input hidden type field.

id="timestamp" name="timestamp"

Caused by: org.apache.commons.fileupload.MultipartStream$MalformedStreamException: Stream ended unexpectedly Caused by: org.apache.commons.fileupload.FileUploadException: Stream ended unexpectedly