What is nvcoas.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 nvcoas.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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Nvcoas.exe file information

The process known as NVC OnAccess virus scanner belongs to software Norman Virus Control or Norman Internet Control or Norman Internet Control plus or Norman Security Suite or Norman Virus Control plus by Norman ASA (

Description: Nvcoas.exe is not essential for the Windows OS and causes relatively few problems. The file nvcoas.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 179,256 bytes (66% of all occurrences), 191,544 bytes or 183,352 bytes. 
The program has no visible window. Nvcoas.exe is not a Windows core file. It is a Verisign signed file. The nvcoas.exe file is certified by a trustworthy company. Nvcoas.exe is able to monitor applications. Therefore the technical security rating is 22% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you experience any issues with installation of nvcoas.exe, you can uninstall the program using the Control Panel ⇒ Uninstall a ProgramNorman Virus Control or Norman Internet Control plus.

Recommended: Identify nvcoas.exe related errors

Important: Some malware camouflages itself as nvcoas.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the nvcoas.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

It's part of Norman anti virus
  A. de Heer  
The actual real time scanner in Norman Virus Control.
  TOB   (further information)
It's part of Norman anti virus
  Patrick Moe   (further information)
Part of Norman Antivirus : Real-Time scanner
  DOE   (further information)
Ist der Echtzeit-Scanner von Norman Antivirus
  Jan K.  

Summary: Average user rating of nvcoas.exe: based on 5 votes with 5 user comments. 4 users think nvcoas.exe is essential for Windows or an installed application. One user thinks it's probably harmless.

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Best practices for resolving nvcoas issues

A clean and tidy computer is the key requirement for avoiding problems with nvcoas. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the nvcoas.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

nvcoas.exe [all]