i am unable to start the windows firewall service. windows could not start the windows firewall on local computer. for more information, review the system event log. Error code 5. Eventvwr The Windows Firewall service terminated with the following service-specific error: Access is denied. Tried some solution from the internet, but it doesn't work I have added mvpsvc service string to full permission in regedit. i have uninstalled the Symantec antivirus.