Boopathy,
We would like to know more about what’s happening with your AVG Internet Security. May I know whether 'Hacker protection' component is disabled in your AVG Internet Security? If so, please answer below questions to assist further:
1. May I know whether the issue started after fresh installation or after update?
2. Have you tried restarting your PC?
3. Do you encounter any error when trying to enable firewall component?
4. May I know the version of your Windows operating system?
5. Have you installed any other Antivirus program (like McAfee, Kaspersky, Norton or Malwarebytes) in your computer?