Java Web Start Not Launching Problem

I've just install New OS windows 7 64bit, After installed java.

I couldn't launch any Java Web Start application from my browser (by downloading and launching a *.jnlp file). When I try to launch an app, the loading cursor spinning for 10-20 seconds then nothing happe开发者_如何学JAVAn. I am getting frustrated with this issue!

Does any one know how can i fix it ?

You can try to download the JNLP file localy and starts it using a command : javaws file.jnlp you will have more informations about the potential errors.

JNLP is a little annoying initially if you don't get it right. I had the same experience, follow this tutorial, it works like a charm.

Also, please post some error/warning message. Your question is very broad.