Base Filtering Engine (BFE) Service Defaults in Windows 8

The Base Filtering Engine (BFE) is a service that manages firewall and Internet Protocol security (IPsec) policies and implements user mode filtering. Stopping or disabling the BFE service will significantly reduce the security of the system. It will also result in unpredictable behavior in IPsec management and firewall applications.

Default Settings

Startup type:Automatic
Display name:Base Filtering Engine
Service name:BFE
Service type:share
Error control:normal
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\system32\svchost.exe -k LocalServiceNoNetwork
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BFE
  • SeAuditPrivilege

Default Behavior

Base Filtering Engine is a Win32 service. In Windows 8 it is starting automatically during the operating system startup. Then the Base Filtering Engine service runs as NT AUTHORITY\LocalService in a process of svchost.exe, sharing it with other services. If Base Filtering Engine fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the BFE service hasn't been started.


Base Filtering Engine can't start, if any service from the list below is disabled or not available:

All the services listed below will not start if Base Filtering Engine is disabled:

Restore Default Startup Configuration for Base Filtering Engine

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_BFE_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The BFE service is using the bfe.dll file that is located in the %WinDir%\System32 folder. If the file is corrupted or deleted, you can put it back in there.