Nigtly 36 x64 wont connect

Question

general problem is "Websites show a spinning wheel and never finish loading" But all webpages, only on the nighlty. Normal Firefox works great.
The nighly only works if firewall is disabled, but just works for some time and the wont connect.
When is not connecting it comes with an other problem. Even when ending the nighly processes there will remain a nighly processes that cant be ended, saying access denied (only way to close nighly and using normal firefox is to restar the computer. Or restarting and disabling the firewall and then running the Nighly)
I have windows 8 x64 with Nighlty x64. I use windows firewall with all firefox and nighly allowed. It use to work fine until an update. And cant find a way to fix it.

Answer 1

Type '''about:preferences#advanced'''<Enter> in the address bar.
Under '''Advanced,''' Select '''Network.'''
Look for '''Configure How Firefox Connects''' and press the '''Settings''' button.
Check the settings.
Some problems occurs when your Internet security program was set
to trust the previous version of Firefox, but no longer recognizes your
updated version as trusted. Now how to fix the problem: To allow
Firefox to connect to the Internet again;
* Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
* Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see
'''[https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet Configure firewalls so that Firefox can access the Internet.]''' {web link}
Start your '''Computer''' in safe mode. Then start Firefox. Try '''Safe''' web sites.
'''[http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting The Computer In Safe Mode;<br>Free Online Encyclopedia]'''