CyanogenMod installer won't connect to internet As per screenshot below, I have been unable to proceed with the CyanogenMod Installer (Windows). 
This is what I get:

Having internet troubles? Please check your network connection. 


Screenshot (click image for large variant)

I've tried adding extra inbound and outbound exceptions for Cyanogen Mod Installer (%USERPROFILE%\AppData\Local\Temp\CMInstaller.exe) in the Windows Firewall (accessible from Control Panel), but it didn't help.
I am not behind a proxy. And there's nothing wrong with my Internet connection : I'm accessing all other online content.

I'm using Win8x64, and trying to install CM on my Samsung S3 GT-i9300.

Has anyone encountered the same issue?

*UPDATE: I tried running the msi installer via an admin command prompt, didn't make any difference.
Because this question is in the active category, I'll give an updated answer.

CyanogenMod was discontinued on December 27th, 2016. Because of this, their webserver also went down, which would cause the issue this question asked. There is no solution, and the installer is forever broken. You can manually install the ROM or use a different custom ROM.