After configuring your Authenticated HTTP Distribution server you are unable to download some of the files in the Distribution Server. You are able to view the files in your browser but when you attempt to download then you get the error. 404 - File or directory not found.
This is issue is caused by not having the correct MIME Type configured in IIS.
1. In IIS browse to your web site
2. Click on MIME Types, then under Extensions right click and choose add. Then add the file extension and MIME Type. In this example I am adding .msu as the MIME Type application/octet-stream.
3. Now you should be able to download any files with the extension .msu
Protect 9.0 and later