Windows Defender Firewall - Windows 11 Service
Windows Defender Firewall helps protect your computer by preventing unauthorized users from gaining access to your computer through the Internet or a network.
This service also exists in Windows 10, 7, 8 and Vista.
Startup Type
| Windows 11 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 21H2 | Automatic | Automatic | Automatic | Automatic |
| 22H2 | Automatic | Automatic | Automatic | Automatic |
| 23H2 | Automatic | Automatic | Automatic | Automatic |
| 24H2 | Automatic | Automatic | Automatic | Automatic |
Default Properties
| Display name: | Windows Defender Firewall |
| Service name: | mpssvc |
| Type: | share |
| Path: | %WinDir%\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p |
| File: | %WinDir%\system32\mpssvc.dll |
| Error control: | normal |
| Group: | NetworkProvider |
| Object: | NT Authority\LocalService |
| Privileges: |
|
Default Behavior
The Windows Defender Firewall service is running as NT Authority\LocalService in a shared process of svchost.exe. Other services might run in the same process. If Windows Defender Firewall fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the mpssvc service has failed to start.
Dependencies
Windows Defender Firewall is unable to start, if at least one of the following services is stopped or disabled:
- Base Filtering Engine
- Network Store Interface Service
- Windows Defender Firewall Authorization Driver
If Windows Defender Firewall is stopped, the Xbox Live Networking Service fails to start and initialize.
Restore Default Startup Type for Windows Defender Firewall
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreWindowsDefenderFirewallWindows11.bat file to any folder on a local drive such as SSD or a hard disk.
3. Right-click the downloaded batch file and select Properties.
4. Check the Unblock checkbox and click OK.
5. Right-click the batch file again and select Run as administrator.
6. Restart the computer to save changes.
Note. Make sure that the mpssvc.dll file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows 11 installation media.