diff --git a/www/FileTransfer.js b/www/FileTransfer.js
index 6eb9d74..57c9821 100644
--- a/www/FileTransfer.js
+++ b/www/FileTransfer.js
@@ -42,7 +42,7 @@ function getBasicAuthHeader(urlString) {
 
         var credentials = null;
         var protocol = url.protocol + "//";
-        var origin = protocol + url.host;
+        var origin = protocol + url.host.replace(":" + url.port, ""); // Windows 8 (IE10) append :80 or :443 to url.host
 
         // check whether there are the username:password credentials in the url
         if (url.href.indexOf(origin) !== 0) { // credentials found