Firewall does not work. Windows Vista

Firewall does not work.  Security Center is disabled and when I try to turn it on I get a box saying that it can not be started.  Also firewall is not running and do not use the appropriate settings.  When I try to update the settings, I get a box saying that they cannot be updated.

Hello

1. have you made changes on the computer before this problem?

2. What is the error message or an exact error code?

3. what security software is installed on your computer?

I would suggest trying the following methods and check if it helps.

Method 1:

Run the fixit from Microsoft Fixit article and if that helps.

Diagnose and automatically fix problems of Windows Firewall service:

http://support.Microsoft.com/mats/windows_firewall_diagnostic/

Method 2: The driver of the authorization (mdsdrv.sys) firewall is a system protected Windows file. You can run the tool File Checker system and if the file is found to be damaged, it will be replaced.
Proceed with caution.

a. go to start / all programs / accessories.

b. right click on the item "Command Prompt" and select the option 'run as administrator '.

c. click 'Continue' on the UAC prompt.
In the command window, type the following command.
 SFC/SCANNOW

d. press ENTER.

This will take a few minutes to complete. Try not to use the computer during execution of SFC.
When the tool is finished, restart the computer and review the firewall options.
Let me know the results.

Also follow the Microsoft Windows Help article below.

http://Windows.Microsoft.com/en-us/Windows-Vista/turn-Windows-Firewall-on-or-off

Hope the information is useful.

Tags: Windows

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