Windows Vista Firewall will not start

Posted on 2009-02-11
Last Modified: 2012-06-21
I have a Vista-32 SP1 laptop that will not start the Windows Firewall Service.

Attempting to start it from Services logs an error to the System Log:

EventID 7024
The Windows Firewall service terminated with service-specific error 6801 (0x1A91).

I have tried NETSH FIREWALL RESET. This has not helped.

The problem has come to light as the machine will not let Windows Live Messenger connect to the internet. The machine has had Norton360 and McAfee on it in the past and I think one of those may still be hanging around in the TCP/IP stack somewhere.

There is currently no obvious sign of another firewall on the system.

Whilst not quite the same problem, this KB article had some reg keys to check, They all have the required permissions.
Question by:Newitts
    LVL 11

    Expert Comment

    It must be the NORTON. Please download the NORTON removal tool and try again.

    I had a similar issue and after running this tool and restarting the PC it all worked fine.
    LVL 11

    Expert Comment


    Author Comment

    That didn't help, but thanks for the tip.

    I looked for a McAfee removal tool, ran that as well but the firewall still will not start up and the same error is logged.
    LVL 11

    Expert Comment

    Try doing a system restore to a previous state when it was working and then RE-RUn the norton removal tool.

    Did you change the security permissions on the firewall service at all??
    LVL 11

    Expert Comment

    Hello, is this issue resolved now??

    Accepted Solution

    System restore did not go back far enough to enable the firewall to start up.

    I restored back to the factory image in the end after backing up the user's data.

    Expert Comment

    This worked after the Norton Removal Tool did not work

    Open a "run as administrator" command prompt.
    Go to "c:\windows\system32\config\TxR" (or the equivalent location on your PC)
    - run "attrib H S *" to make all hidden files in the directory visible.
    - run "del *.blf"
    - run "del *.regtrans-ms"
    - reboot the machine

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