Why my computer automatically turn off the Windows Firewall? When i want to turn it on, it stated that Security Center can't turn on Windows Firewall. How can I solve this problem?

Do you have an alternate, third-party firewall in place, like Zone Alarm or Sunbelt Personal Firewall or Norton Internet Security?Brian Tillman [MVP-Outlook]

Yup, Kingston Personal Firewall. So, isn't OK if my Windows Firewall is turn off? Because I have the Kingston software for about 2 months, and i just found the Windows Security Alerts that my Windows Firewall is turn off for a few days ago.

You do not want to run two firewalls at the same time, unless one is built in to a router. Doing so can cause conflicts. Since you have Kingston, the Windows firewall should be turned off. Bruce Hagen MS-MVP [Mail]

Ok. Thanks for your help.