NisSrv.exe | Runs The Microsoft Network Realtime Inspection Service

What is NisSrv.exe?

NisSrv.exe is the exe file that runs the Microsoft Network Realtime Inspection Service, part of Windows antivirus software, Microsoft Security Essential.

When Windows boots up, NisSrv.exe implements the Network Inspection Service (NIS), which helps monitor the real-life incoming network traffic to exploit the “zero-day” vulnerabilities while looking for suspicious patterns.

The service for NisSrv.exe inhabits in C:\Program Files\Microsoft Security Client\NisSrv.exe.


Key Statistics

Name: Microsoft NetworkRealtime Inspection Service

Developer: Microsoft Windows Operating System

File Size: 265352 bytes

Latest Version Number: 4.18.2107.4 

Common NisSrv.exe Errors:

What is this error?

NisSrv.exe are error messages you get on Runtime. Pretty self-explanatory, Runtime means that when NisSrv.exe is attempted to be loaded, the EXE errors are triggered. This can happen in some cases when the Window is already running or just starting up. When you use Windows Runtime, errors are the most common EXE error forms you will encounter.

Some of the most common NisSrv.exe errors include:

  • File is not running.
  • Windows failed to start
  • The file is missing or corrupt.
  • Cannot find file
  • Faulting Application Path
  • Error starting program:
  • NisSrv.exe is not a valid Win32 application.

When does it occur?

NisSrv exe runtime errors in most cases occur when the running of the program results in the abnormal termination of the program. 

What causes it?

To properly resolve these errors, the key is to find the source of the NisSrv.exe error. Most of the EXE errors that will affect NisSrv exe will occur during startup. However, you can get the occasional runtime errors when you use Windows 10.

Due to poor programming on behalf of Microsoft, this can occur frequently. Other reasons it occurs are outdated or damaged hardware and conflicts because of 3rd party plug-ins or other software.

These types of errors are caused if NisSrv has been accidentally corrupted, deleted, or moved because of an infection malware.

Therefore, to avoid NisSrv.exe errors, it’s important to make sure that antivirus is regularly scanned and kept up to date. 

How to fix

To resolve your NisSrv issue, follow these troubleshooting steps if you encounter any of the above error messages. 

Step A: Restore your computer to the newest restore point or try backing up the image before the error occurs. 

  1. Click on the Start button of Windows.
  2. Type System Restore when you see the search box. Hit Enter. 
  3. Find and click System Restore in the search results
  4. Enter the password for the administrator
  5. To choose a relevant restore point, follow the System Restore Wizard steps
  6. Restore your PC to the backup image

Step B: Run SFC to restore the missing or corrupt NisSrv.exe file

  1. Click on the Start button on Windows
  2. Type CMD in the search box. DO NOT HIT ENTER.
  3. While pressing ENTER, press and also hold CTRL-SHIFT from your keyboard
  4. A permission dialog will prompt you
  5. Select YES
  6. Type SFC/scan now in the black screen with a blinking cursor and hit ENTER
  7. For system file problems and other NisSrv.exe issues, SFC will begin to start scanning
  8. To complete the process, follow any commands on-screen. 

Step C: Update Windows

  1. Click on the Start button of Windows
  2. Press ENTER after typing Update in the search box. 
  3. Click Check For Updates in the dialog box for Windows Update
  4. Click Install Updates if updates are available for download
  5. Restart your PC after the Update has been completed. 

Is NisSrv.exe Safe? Is it malware?

As we have already established, NisSrv.exe is also known as Microsoft Network Realtime Inspection Service. This means that it is a part of Microsoft Security Essentials or Microsoft Malware Protection since Microsoft Windows Operating System made NisSrv.exe.

Since Microsoft created the software, it has been known to be safe. If it is corrupted, however, it can cause slowness or issues with your computer. NisSrv.exe is important even though it is not essentially a part of Windows.

Since it does not need to be visible by Windows, it also does not appear on taskbars. You can use Control Panel if you don’t want it or want to remove it completely.

It is nevertheless an important and safe part of Windows 7 machines’ malware protection when still running MSE. Windows 10 does not carry the NisSrv.exe.

NisSrv.exe may be using GPU or CPU too much. It might be running in the background if it is a virus or malware. Of the NisSrv.exe file, the .exe extension represents the fact that is is an executable file for the WOS like Windows 10, Windows 8, Windows 7, and Windows XP. 

How to remove NisSrv.exe

When we give you instructions on removing NisSrv.exe, it doesn’t necessarily mean that it is harmful. However, without deeper knowledge of what you’re doing, always be aware of removing EXE files from your computer.

There is always a possibility that removing this file can lead to damaged data or operating systems since NisSrv.exe is an executable.

If you’re still adamant about removing NisSrv.exe, then here is the guide:

  1. For Windows, create a Restore Point. If something goes wrong, this will help you backtrack changes
  2. To open the standard search window, press F3. Search for NisSrv.exe in the bar.
  3. Try to uninstall the program after you locate the program that the NisSrv.exe belongs to. For instance, it most likely belongs to a software package by the name of “Dummy game” if your NisSrv.exe is found in the folder C:\Program Files\Dummy game\**some subfolder**.
  4. Go to the search results if your problem persists and try to delete all the NisSrv.exe occurrences manually.
  5. Use specialized tool EasyRemove to remove hidden programs. This is because, under different names, some malware can hide, so be aware of that. 

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