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Program info

Estimated safety rating


nissrv.exe is a program which is most likely legit. So, if nissrv.exe is on your PC, it is most likely ok, and will NOT cause problems. Even if your system is clean, we still advise you to purchase a good antivirus with a good track record, in order to yourself your PC against potential security problems.

Executable file path

 C:\Program Files\Windows Defender\NisSrv.exe

This program is usually found on disk in C:\Program Files\Windows Defender\NisSrv.exe.

MD5 hash of the executable file


The MD5 checksum for this program is 9bc2396b659f78d4bc5db3444e6dae73.

Is running as a service


This application is a Windows service. This means it operates on your PC in background, usually without showing any user interface to you. Most Windows services are legit programs, which perform useful features to other applications or to the Windows Operating System.

Belongs to the operating system


nissrv.exe appears to use the functions of Windows SFC (System File Checker) or Windows File Protection.

Is a 32 bit executable file


This app runs as a 32-bit program. It does not use the full power of modern PC CPUs. This is quite normal because the authors did not upgrade it to use the x64 instruction set.

File description

 Microsoft Network Realtime Inspection Service

The description stored in the program is Microsoft Network Realtime Inspection Service.

File version

 4.9.10586.0 (th2_release.151029-1700)

File version extracted from the file 4.9.10586.0 (th2_release.151029-1700).


 Microsoft Corporation

Company Microsoft Corporation.


 © Microsoft Corporation. All rights reserved.

Copyright notice © Microsoft Corporation. All rights reserved..

Digitally signed


nissrv.exe has a digital signature. Nowadays most legit programs are digitally signed.

Valid digital signature


The digital signature found in nissrv.exe is valid. This is very good.

Certifier name

 Microsoft Corporation

Digitally signed by: Microsoft Corporation

Issuer name

 Microsoft Code Signing PCA

Certificate's issuer name: Microsoft Code Signing PCA

Can be uninstalled


This application does NOT have an uninstall routine set up in registry.