Automatically diagnose and fix problems with Windows Firewall

Applies to: Windows 10Windows 8.1Windows 7

Follow these steps to automatically repair Windows Firewall problems:

    • Select the Download button on this page.
    • In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Firewall Troubleshooter.


    • Windows Firewall isn’t the default firewall
    • Windows Firewall doesn't start 
    • Windows couldn’t start Windows Firewall (Service-specific error 5 (0x5))
    • Remote Assistance isn’t working because it’s blocked by Windows Firewall
    • You’re unable to access shared files and printers because sharing is blocked by Windows Firewall
    • BFE service is missing
    • Firewall won’t start (Error Code 80070424)
    • Windows 7
    • Windows 8
    • Windows 8.1
    • Windows 10