Fix Windows Firewall Not Working – 0x05 Firewall Error

by Rohit Khurana on August 24, 2010


Windows firewall is like a wall virtual wall which protects your windows PC from outside dangers like Internet attacks, external hacking attacks, identity thefts, data theft, unauthorized access to computer and many other network related attacks.


Many a times Windows firewall stops working, this can be because of multiple reasons. One of the most common reason is when you install a third party firewall, like Zone Alarm, Norton Firewall etc. In such cases when you install a third party firewall or security software which has an in-built firewall protection, this is not a cause for worry. But in the other case, when the firewall is not working even when you have not installed any other safety firewall, it is surely a matter of concern.


In this article, I will share with you a small tool from Microsoft which will help to fix Windows Firewall problems by running a diagnostic test. This tool is a part of Microsoft Automated Troubleshooting Service.

This particular tool which  I am sharing in this article, fixes the following problems:

  • Windows Firewall is not the default firewall
  • Windows Firewall does not start
  • Windows Vista could not start Windows Firewall. Service-specific error 5 (0x5)
  • Remote Assistance does not work
  • You cannot access shared files and printers

To use this tool, just visit the Windows Firewall Diagnostic page and click “Run Now” button to allow this tool to download and scan your computer.


The tool will download, run, scan your Windows PC for the cause of error, will fix the problem and offer additional resources if its unable to resolve the problem.

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