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.
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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