If your Windows Firewall is blocking Tube Toolbox from accessing the Internet, then Tube Toolbox can't run. Below is a step by step guide to allowing an exception in your Firewall for Tube Toolbox so that Tube Toolbox can run.
Fix
- Open your Windows Control Panel, click on System and Security.
- Click on Allow a Program through Windows Firewall.
- Click Change Settings.
- Click Allow Another Program.
- Click Browse.
- Navigate to your Tube Toolbox installation folder, select TubeToolbox.exe and click Open at the bottom.
- Select Tube Toolbox and click Add.
- Select Private and Public, then click OK.
That's it!