The Firewall component of your AVG Internet Security 2014 security solution may block programs it deems dangerous and prevent them from connecting to the Internet. If you are certain that a program blocked by AVG is in fact safe, unblock it by changing the AVG security settings. You don't need to restart your computer after you make the changes; the programs are unblocked immediately. Be careful -- if you unblock a dangerous program, you allow it to send and receive potentially dangerous data.
Open the AVG Control Panel by double-clicking the AVG icon in the system tray. Click the "Firewall" icon to display the Firewall screen. To ensure AVG doesn't block applications in the future without asking for permission, click the "Change" button in the Firewall Mode section, select the "Interactive mode" option and then click "Apply" and "OK." When this option is selected, AVG prompts you to allow or block new applications.
Click the "Settings" button and then select the "Applications" tab. All applications installed on your computer are displayed in a list. The list can be quite long, so you have to scroll down until you find the program you wish to unblock.
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Click the "Block" icon next to the application name in the Action column and select "Allow" from the menu to unblock the program. Click "Apply" to apply the new settings and then click "OK" to close the window.