nissrv.exe is a application which is probably legit. So, if nissrv.exe is on your computer, it is probably ok, and will NOT cause problems. Even if your system is clean, it is still recommended to run a good antivirus with a good detection rate, in order to defend yourself against potential security problems.
Usually, the default name and folder where the application is stored is
C:\Program Files\Windows Defender\NisSrv.exe.
The MD5 checksum for this file is 2ffb0f94c3cbc1d7133edd3213e41cc1.
This application is a Windows service. This means it operates on your system in background, usually without showing anything to you. Most Windows services are legit programs, which perform useful functions to other applications or to Windows in general.
nissrv.exe appears to use the functions of Windows SFC (System File Checker) or Windows File Protection.
This is a x64 executable. It uses the full capacity of modern CPUs.
The description extracted from the file is Microsoft Network Realtime Inspection Service.
File version extracted from the file 4.11.15063.0 (WinBuild.160101.0800).
Producer Microsoft Corporation.
Legal copyright © Microsoft Corporation. All rights reserved..
nissrv.exe is digitally signed. Nowadays most legit programs are digitally signed.
The digital signature extracted from nissrv.exe is valid. This is most likely a clean, ok program.
Digitally signed by: Microsoft Corporation
Certificate's issuer name: Microsoft Code Signing PCA
This program does NOT have a removal routine stored in registry.