How to solve putty network error permission denied

Oh I found the solution for this problem. Its due to anti virus (ex: norton).
Anti virus blocks all the network permissions. So I have disabled all smart firewall and browser protection from anti virus. it worked fine.
Please disable all third party firewalls too then it will work. It is not 32 and 64 bit issue I think so.

It's usually a firewall problem, especially with third party firewalls, in my case TinyWall for Windows. Simply allow the program access.

I have McAfee Endpoint Security and I had the same problem. Whenever I try to connect with putty I get "permission denied". In this case, I opened McAfee Endpoint Security, went to "Firewall". In "Firewall" I went to "RULES" and pressed "Add Rule", wrote the rule name and went to the bottom to "Executables". In "Executables" I pressed "Add", then "Browse", and added PUTTY executable. That solved this problem for me.