What is NIS.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the NIS.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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NIS.exe file information

Windows Task Manager with NIS
NIS.exe process in Windows Task Manager

The process known as Norton Internet Security or Endpoint belongs to software Norton Internet Security or by Symantec (

Description: NIS.exe is not essential for the Windows OS and causes relatively few problems. NIS.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 276,376 bytes (45% of all occurrences), 275,696 bytes, 276,336 bytes, 282,016 bytes or 143,856 bytes. 
The NIS.exe file is a Verisign signed file. The file is certified by a trustworthy company. It is not a Windows core file. The program has no visible window. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with NIS.exe, you can do the following:
  1) completely remove Norton Internet Security or Norton Internet Security (Control Panel ⇒ Uninstall a Program)
  2) consult Symantec's Customer Service [1][2].

Recommended: Identify NIS.exe related errors

Important: Some malware camouflages itself as NIS.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the NIS.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Guter Virenschutz
NIS mit anderen Worten Norton Internet Security. Noron ist ein Virenschutzprogramm von der Symantec Corp. diese hat auch diese Seite geprüft und für sicher gestellt (Siehe ganz unten auf der Seite)
Norton Internet Security
  Alve   (further information)
virus XD with anti on beggining  

Summary: Average user rating of NIS.exe: based on 5 votes with 4 user comments. 3 users think NIS.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving NIS issues

A clean and tidy computer is the key requirement for avoiding problems with NIS. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the NIS.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

NIS.exe [all]