Microsoft Defender Antivirus Network Inspection Service - Windows 10 Service
Helps guard against intrusion attempts targeting known and newly discovered vulnerabilities in network protocols.
This service also exists in Windows 11 and 8.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Manual | Manual | Manual | Manual |
| 1511 | Manual | Manual | Manual | Manual |
| 1607 | Manual | Manual | Manual | Manual |
| 1703 | Manual | Manual | Manual | Manual |
| 1709 | Manual | Manual | Manual | Manual |
| 1803 | Manual | Manual | Manual | Manual |
| 1809 | Manual | Manual | Manual | Manual |
| 1903 | Manual | Manual | Manual | Manual |
| 1909 | Manual | Manual | Manual | Manual |
| 2004 | Manual | Manual | Manual | Manual |
| 20H2 | Manual | Manual | Manual | Manual |
| 21H1 | Manual | Manual | Manual | Manual |
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | Microsoft Defender Antivirus Network Inspection Service |
| Service name: | WdNisSvc |
| Type: | own |
| Path: | %ProgramFiles%\Windows Defender\NisSrv.exe |
| Error control: | normal |
| Object: | NT AUTHORITY\LocalService |
Default Behavior
The Microsoft Defender Antivirus Network Inspection Service is running as NT AUTHORITY\LocalService in its own process of NisSrv.exe. It doesn't share its process with other services. If Microsoft Defender Antivirus Network Inspection Service fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the WdNisSvc service has failed to start.
Dependencies
Microsoft Defender Antivirus Network Inspection Service is unable to start, if the Microsoft Defender Antivirus Network Inspection System Driver service is stopped or disabled.
Restore Default Startup Type of Microsoft Defender Antivirus Network Inspection Service
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreMicrosoftDefenderAntivirusNetworkInspectionServiceWindows10.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the NisSrv.exe file exists in the %ProgramFiles%\Windows Defender folder. If this file is missing you can try to restore it from your Windows 10 installation media.