Fire Wall after upgrade to WIN 10

Avast Free Antivirus / Premium Security
1

Avast seems to work OK after upgrade to Win 10 but i am not able to turn on the firewall. Any help would be appreciated.VFBFB

2

Repair Avast:

  1. Control Panel → Add/Remove programs → Avast
  2. Click on ‘Repair’.
  3. Follow instructions.
  4. Reboot.