I tried with several strategies and finally fed up.
So I reset my PC - By which I went back to Windows 8.1 Pro.
I installed Qliksense 3.1 server now!
I installed all other software, which I had before; Now it works Perfect!
I also upgraded to windows 10.
Many of my colleagues faced the similar issue - But different Qliksense V2 SR release's;
Version 3 works like a charm in windows 10 and 8.1.
I guess there might be a problem with QSense V2.