What causes windows firewall not working on Windows?

Common causes of windows firewall not working include: Windows Firewall service not running, Base Filtering Engine (BFE) service disabled, Third-party firewall conflicting, Malware disabled the firewall, Corrupted firewall policy, Registry permissions preventing firewall changes.

How do I know if I have windows firewall not working issues?

Common symptoms of windows firewall not working include: Firewall shows "Windows Defender Firewall is turned off", Can't turn on firewall — error 0x6D9, Firewall settings grayed out, Firewall is on but not blocking anything, "Windows Firewall can't change some of your settings", Firewall keeps turning itself off.

Can RescuePC fix windows firewall not working automatically?

Yes, RescuePC Toolkit includes automated scripts that can diagnose and fix windows firewall not working issues with one click, without requiring technical knowledge.

Fix Windows Firewall Not Working on Windows

Symptoms

You might be experiencing this problem if you notice:

•Firewall shows "Windows Defender Firewall is turned off"
•Can't turn on firewall — error 0x6D9
•Firewall settings grayed out
•Firewall is on but not blocking anything
•"Windows Firewall can't change some of your settings"
•Firewall keeps turning itself off

Common Causes

⚠Windows Firewall service not running
⚠Base Filtering Engine (BFE) service disabled
⚠Third-party firewall conflicting
⚠Malware disabled the firewall
⚠Corrupted firewall policy
⚠Registry permissions preventing firewall changes

Solutions

Solution 1: Start Firewall Services

1Press Windows + R, type services.msc
2Find "Windows Defender Firewall" — set to Automatic, click Start
3Find "Base Filtering Engine (BFE)" — set to Automatic, click Start
4Find "Windows Firewall Authorization Driver" — set to Automatic
5Restart your computer
6Try turning on the firewall again

Solution 2: Reset Firewall to Defaults

1Open Command Prompt as Administrator
2Run: netsh advfirewall reset
3Run: netsh firewall reset (for legacy compat)
4Go to Windows Security > Firewall & network protection
5Click "Restore firewalls to default"
6Restart and verify firewall is active

Solution 3: Fix Error 0x6D9

1Open Command Prompt as Administrator
2Run: sc config MpsSvc start= auto
3Run: sc config BFE start= auto
4Run: net start MpsSvc
5Run: net start BFE
6If services fail to start, run: sfc /scannow followed by DISM /Online /Cleanup-Image /RestoreHealth
7Restart and try again

FIXES THIS IN 5 MINUTES

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