Hey, you posted on my thread a while ago saying you couldn't play the beta, so, if you still haven't been able to, I'll try and explain.
The most likely reason that it didn't allow you to play it is because it's a .exe file. Viruses are also this file, so your anti-virus software may be blocking it. Just go into the settibngs and change it to allow them. If that doesn't work, then just disconnect from the internet and turn the anti-virus software off all together.