I have this problem with Windows 7 OS - Google Chrome and IE browsers both not letting me set up a new account on Facebook via www.ctunnel.com
I have spent countless waking hours between work and sleep researching this issue. Here is the list of "advice" that I have uncovered.
HERE'S WHAT HELPED OTHERS - but not me.
Go to Start - Control Panel - Windows Firewall (in the left side column: click "Turn Windows Firewall on or off" - change both Home and Public network settings to "Turn Off Firewall". - then click OK to make the change. Close browser. Open it again and try whatever you were doing. If it still doesn't work - go back and Turn On Firewalls again in both networks, click OK to save changes.
3) Update the latest Adobe Flashplayer
4) Turn off pop-up blockers (for the specific web page)
5) Allow Inbound or Outbound content for specified web page,
Go to Control Panel - Windows Firewall - Advanced Settings - under Getting started (middle to bottom of box) "View and create firewall rules"
7) See if it works from another computer (whatever is not working)
8) Make sure you have all recent updates for your OS.
9) Go to Google base: type question - get an answer for all browsers other than Google Chrome - leave a comment to point that out to them and say, "Thanks for nothing."
Bibbidy-Bobbidy-Boo!! dAng! My wand must be broken ~ I still have this issue.
So I am able to view some Youtube videos, but I am not able to sign-in or start a new account in Facebook through a free VPN.
Fundamentally, my issue was not related to any of the suggestions above.
However, I hope my experience and research helped others, and that this new discovery helps others as well.
Yes, you may post this in the FAQ, certainly.
However, I still have not resolved my issue - but some of the advice listed has helped others.
If you just want one picture - I think the Windows logo would be fitting, since this fundamentally appears to be an OS issue rather than browser settings.
From my limited understanding, Windows 7 has many security and other features deeply embedded that cause infinite aggravations for past users of XP and Vista.
I think it would be helpful to add pictures of HOW TO follow the steps for IE, Firefox and for Google. (screen shots) as in these links below.
You may not be permitted to use these listed, but I'm not sure.
Nonetheless, making screen shots is relatively easy.