Windows 8 Services

Windows Defender Network Inspection Service - Windows 8 Service

Helps guard against intrusion attempts targeting known and newly discovered vulnerabilities in network protocols.

This service also exists in Windows 10.

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core not exists Manual Manual
Pro not exists Manual Manual
Enterprise not exists Manual Manual

Default Properties

Display name:Windows Defender Network Inspection Service
Service name:WdNisSvc
Path:%ProgramFiles%\Windows Defender\NisSrv.exe
Error control:normal
Object:NT AUTHORITY\LocalService

Default Behavior

The Windows Defender Network Inspection Service runs as NT AUTHORITY\LocalService in its own process of NisSrv.exe. It does not share its process with other services. If Windows Defender Network Inspection Service fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the WdNisSvc service has failed to start.


Windows Defender Network Inspection Service won't start, if the Windows Defender Network Inspection System Driver service is stopped or disabled.

Restore Default Startup Type of Windows Defender Network Inspection Service

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreWindowsDefenderNetworkInspectionServiceWindows8.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.

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 8 installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.