Firewall unable to enable
4.5
You try to turn on the firewall but it stays off or gives an error.
Symptoms
- "Firewall service not running"
- Greyed out buttons
- Error 0x80070422
Possible Causes
- Malware interference
- Registry corruption
- Dependency service failure
Step-by-Step Fix
1
Restart BFE Service
In services.msc, ensure "Base Filtering Engine" is running.
2
Run Windows Firewall Troubleshooter
A built-in tool that fixes common firewall startup issues.
3
Scan for Malware
Malware often disables the firewall to allow its own traffic.
When to See a Technician
If the BFE service is missing from the list, your registry has been severely damaged by malware.
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