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. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\System Services!Base Filtering Engine (2) REG: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BFE!Start