I’m running IIS8 and I have a site where I can wget and download isos easily.

I got a 404 error when trying to download an iso:

Image of a 404 error from IIS

You must add the correct MIME type for the file you’re trying to download.

From IIS Manager, go to Sites > YOUR_SITE> and in the features view, double-click MIME Types.

Under actions, click Add.

Enter the file extension iso and the MIME type application/octetstream

Add MIME type dialog box

Click OK and retry your download.

iso downloading