Windows 10: downloading file different result between IE11 and Firefox

Today I downloaded a file with extension .fdu (satellite sender list). I have not assigned a program to .fdu files.
Downloading with IE11 results in a HTML file and not an fdu file.
Downloading with Firefox results in an fdu file.
I am curious about an explanation, since I never met such a thing before.

:)

 

Why does my browser load so slowly, and why does typing lag in my browser ?

I have no problem with Firefox or Avant Browser.

I do not use any of those you have. Could there be a conflict?

If you try Avant Browser it can be set up for different Rendering Engines. I use Firefox. There are ones for Chrome. IE Compatible and IE11 Standards besides Firefox.

 

How do I get the old explorer back?

How to find Internet Explorer on Windows 10

How to find Internet Explorer (IE) on Windows 10

More:

You also have IE11 installed on Windows 10 and can use IE11 instead of Edge. Start

If you are using Edge and want to use IE11, click on the 3 dots at the upper right corner and select Open with Internet Explorer.

To put an IE icon on the Desktop

Start at Computer/This PC and navigate to the Internet Explorer folder at "C:\Program Files\Internet Explorer" Right-click iexplore.exe> Send to> Desktop (create shortcut.)

Other options:

Type Internet Explorer into the search box at the bottom of the screen. Find Internet Explorer in the list of results, right-click it to either Pin to taskbar or Pin to Start.

To make IE the default browser:

Start button> Settings> System> left side menu, select Default Apps then select Set Defaults by App. Select Internet Explorer.

More:

How to tell the difference between Edge and IE11 on Windows 10

How to tell the difference between Microsoft Edge and Internet Explorer (IE) on Windows 10

Don

 

Perhaps you could share the URL and a couple of screenshots showing how you are using IE?

 

It must be a security feature in IE11. However, after putting the security options on a low level, still the file is downloaded as a htm file.
But, when I change the extension .htm into .fdu, I have precisely the file which was aimed at and which downloaded as .fdu file with Firefox.
So to be clear: I donot have a problem, I was only surprised.
If you want to experience this by yourself as a test:
Go to Meurs Electronics Centre : Specialist in producten en diensten voor HD via Satelliet, GSO en Canal+
Rebox; Zenderlijst augustus 2016.
As said, it is a file, to be used in a satellite receiver.

 

I would guess it's defective html script, or an issue with standards compliance.

Firefox downloads successfully from that link, but IE and Edge display the file (?) well, there's a page of random characters.

IE Save target offers
Rebox-aug2016.htm

Copy link gives
http://www.xs4all.nl/~mec/mec3/downl...ox-aug2016.fdu


Here's the relevant line-

<p>
<a href="http://www.xs4all.nl/~mec/mec3/downloads/Rebox-aug2016.fdu" target="_blank">Zenderlijst augustus 2016</a>
<br />
Mist u zenders of werken zenders niet meer?