Automatically diagnose and fix problems with Windows Firewall

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.

Notes: 

  • This troubleshooter might be in English only. However, the automatic fix also works for versions of Windows in other languages.

  • If you’re not on the computer that has the problem, save the troubleshooter to a flash drive or a CD, and then run it on the computer that has the problem.

Download 

What it fixes

  • 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)

Runs on

  • Windows 7

  • Windows 8

  • Windows 8.1

  • Windows 10

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