Try to disable your firewall completely and see if that helps. The firewall can be your Windows, or Norton/McAfee/Kaspersky, anything. If works, then find the policy within your firewall program and delete it, and then re-enable your firewall once again (it's helpful security after all).
Hope that helps you, it was just my own similar experience before.
Hope that helps you, it was just my own similar experience before.