Blob Download Is Not Working in Ie

Not able to download the file with same format In Internet Explorer

Which version of IE browser are you using? I tried to test the following code in IE 11 browser, they all download the file with the same file name and extension (Unless there is a file with the same name).

window.open('/file/Document2.docx', 'Download');

and

window.open('https://file-examples.com/wp-content/uploads/2017/02/file-sample_1MB.doc', 'Download');

Try to reset the IE browser setting and check if it solve the problem.

Besides, please refer to the following code, you could also read the file to blob (or base64 string) and then using the msSaveOrOpenBlob method to download the file with file name in IE browser, and use the a tag download attribute to download the file (because IE browser doesn't support the download attribute).

  if (window.navigator && window.navigator.msSaveOrOpenBlob) {
        //IE11 and the legacy version Edge support
        console.log("IE & Edge");
        let blob = new Blob([data], { type: "text/html" });
        window.navigator.msSaveOrOpenBlob(blob, fileName);
    } else {// other browsers
        console.log("Other browsers");
        var bl = new Blob([data], { type: "text/html" });
        var a = document.createElement("a");
        a.href = URL.createObjectURL(bl);
        a.download = fileName;
        a.hidden = true;
        document.body.appendChild(a);
        a.click();
    }

Can't download Blob from a Trusted Site in IE11

Try add blob to the trusted site, it works for me.

i.e. On internet Explorer, go to tools, then internet option, under security tab, click on trusted site, then click on the sites button and add 'blob' as a trusted site

Blob PDF data not rendering in IE 11

const data =
'JVBERi0xLjcNJeLjz9MKMzQgMCBvYmoNCjw8DQovVHlwZSAvQ2F0YWxvZw0KL1BhZ2VzIDcgMCBSDQovTWV0YWRhdGEgMjYgMCBSDQo+Pg0KZW5kb2JqDQozNSAwIG9iag0KPDwgL1R5cGUgL09ialN0bSAvTGVuZ3RoIDQxMCAvRmlyc3QgMTQ1IC9OIDIxIC9GaWx0ZXIgL0ZsYXRlRGVjb2RlID4+DQpzdHJlYW0NCnicxdTBqhoxFAbgvTDv8L/A7ck5SSYT..............';

From your code, it seems that the data is base-64 encoded string, before using the msSaveOrOpenBlob or the msSaveBlob method to download it, we need to Decode the base-64 encoded string and convert to a ByteArray. Please refer to the following code (it works well on my side):

            var data = "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";
            var fileName = "testpdf.pdf";
            if (window.navigator && window.navigator.msSaveOrOpenBlob) { 
                var byteCharacters = window.atob(data);
                var byteNumbers = new Array(byteCharacters.length);
                for (var i = 0; i < byteCharacters.length; i++) {
                    byteNumbers[i] = byteCharacters.charCodeAt(i);
                }
                var byteArray = new Uint8Array(byteNumbers);
                var blob = new Blob([byteArray], { type: 'application/pdf' });
                window.navigator.msSaveOrOpenBlob(blob, fileName);  
            }

Besides, when you select the folder to store the pdf file, please check the folder properties and make sure you have the Write and Read permission.

Mouse event for download functionality not working in IE

The work around would be, instead of using the mouse event use the function msSaveOrOpenBlob for this functionality. So the final working code will be as below

if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./))      // If Internet Explorer
    {
        var bytes = new Uint8Array(byte);
        var blob = new Blob([bytes], {type: "application/pdf"});
        window.navigator.msSaveOrOpenBlob(blob, reportName+".pdf");
        
    } else {
     
        var bytes = new Uint8Array(byte);
        var blob = new Blob([bytes], {type: "application/pdf"});
        var link = document.createElement('a');
        link.href = window.URL.createObjectURL(blob);
        var fileName = reportName;
        link.download = fileName;
        link.dispatchEvent(new MouseEvent('click', {bubbles: true, cancelable: true, view: window}));
    }

Unable to serve a file to download in IE from Angular

You should try using msSaveBlob() instead of the download attribute.

emitFile(stage: any): void {
  const blob = new Blob([stage.elaboration], { type: "text/csv" });
  window.navigator.msSaveBlob(blob,"ff-rocks-ie-sucks.txt");
}

It should work fine for IE and Edge.

EDIT :
The full solution for IE, FF and Chrome would be like that :

emitFile(stage: any): void {
  const blob = new Blob([stage.elaboration], { type: "text/csv" });
  if(window.navigator.msSaveOrOpenBlob) //IE & Edge
  {
    //msSaveBlob only available for IE & Edge
    window.navigator.msSaveBlob(blob,"ff-rocks-ie-sucks.txt");
  }
  else //Chrome & FF
  {
    const url = window.URL.createObjectURL(blob);
    const anchor = document.createElement("a");
    anchor.href = url;
    anchor.download = "ff-rocks-ie-sucks.txt";
    document.body.appendChild(anchor); //For FF
    anchor.click();
    //It's better to remove the elem
    document.body.removeChild(anchor);
  }
}