Installation of Microsoft Web Platform 3.0

Hello,
I am in a need of professional help. I was trying to install Microsoft Web Platform Installer 3.0 and received the following message:
Microsoft Web Platform Installer
Unable to download the Web Platform product list from https://developer.microsoft.com/en-us/. Check your network connection and try again. If the problem persists, report the issue on the Web Platform Installer forum at:
https://forums.iis.net/1155.aspx.
I checked my internet connection, it was okay.
What seems to be the problem? I have Windows 7 Operating System. Is it a root certificate problem?
Thanks and all the best
Dako
