The windows firewall should be off.
Take a look in control Panel> security
You should see a message warning of a conflict should you have two firewalls running.
Sadly I spoke too soon,as after uninstalling and a clean reinstall , the problem is back again.
Looks like another contact to support.
First I will repeat action and see how that goes
For information see this post,note the last entry.
http://preview.tinyurl.com/dy39rvh (you need to copy and paste this )
You will almost certainly need to do uninstall and reinstall (without ...