Blob download is not working in IE

Try this using, this or useragent

if (navigator.appVersion.toString().indexOf('.NET') > 0)
        window.navigator.msSaveBlob(blob, filename);
else
{
 var blob = new Blob(['stringhere'], { type: 'text/csv;charset=utf-8' });
 var link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
 link.href = URL.createObjectURL(blob);
 link.download = 'teams.csv';
 link.click();
}

IE won't allow you to open blobs directly. You have to use msSaveOrOpenBlob. There's also msSaveBlob

if (window.navigator && window.navigator.msSaveOrOpenBlob) {
    window.navigator.msSaveOrOpenBlob(blob, fileName);
} else {
    var objectUrl = URL.createObjectURL(blob);
    window.open(objectUrl);
}

I needed to use a Blob to download a converted a base64 PNG image. I was able to successfully download the blob on IE11 with window.navigator.msSaveBlob

See the following msdn link: http://msdn.microsoft.com/en-us/library/hh779016(v=vs.85).aspx

Specifically, you should call:

window.navigator.msSaveBlob(blobObject, 'msSaveBlob_testFile.txt');

where blobObject is a Blob created in the usual fashion.