Windows Defender Firewall Authorization Driver (mpsdrv) Service Defaults in Windows 10

Windows Defender Firewall Authorization Driver is a kernel mode driver that provides deep inspection services on inbound and outbound network traffic.

Default Settings

Startup type:Manual
Display name:Windows Defender Firewall Authorization Driver
Service name:mpsdrv
Service type:kernel
Error control:normal
Group:network
Path:%SystemRoot%\System32\drivers\mpsdrv.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mpsdrv

Default Behavior

Windows Defender Firewall Authorization Driver is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If Windows Defender Firewall Authorization Driver fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the mpsdrv service has failed to start due to the error.

Dependencies

While Windows Defender Firewall Authorization Driver is stopped, the Windows Defender Firewall service cannot be launched.

Restore Default Startup Configuration for Windows Defender Firewall Authorization Driver

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config mpsdrv start= demand

3. Close the command window and restart the computer.

The mpsdrv service is using the mpsdrv.sys file that is located in the %WinDir%\System32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.