Hello Sammy,
I checked the link you posted for version 5.0.19 and noticed that I had to scroll down to the bottom to accept the License terms before it allows me to download the file.
I also checked our Intel® Download Center and noticed that we have a newer version for the Intel® Deployment Assistant. I went ahead and tried it on my server and I loaded just fine. The version I tried is 5.1.13.
Let me know how it goes with this one.