VETMONNT.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if VETMONNT.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for VETMONNT drivers in need of updating

VETMONNT.sys file information

The process known as RealTime Anti-Virus Protection Driver or CA Antivirus File Protection Driver belongs to software ZoneAlarm Anti-virus or Computer Associates Antivirus or ZoneAlarm Security Suite or VET File and Macro Monitor or CAI Anti-Virus by Computer Associates International (

Description: VETMONNT.sys is not essential for Windows and will often cause problems. The VETMONNT.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 541,733 bytes (42% of all occurrences), 645,904 bytes, 32,528 bytes or 26,787 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. The file is not a Windows core file. VETMONNT.sys is able to manipulate other programs. Therefore the technical security rating is 27% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with VETMONNT.sys, you can safely remove the program using the uninstall program of ZoneAlarm Security Suite or ZoneAlarm Anti-virus (Control Panel ⇒ Uninstall a Program).

Recommended: Identify VETMONNT.sys related errors

Important: Some malware camouflages itself as VETMONNT.sys. Therefore, you should check the VETMONNT.sys 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

shuts down my computer
Shut down with blue screen or restart if u have automatic restart after a system error. Work with ZA antivirus&antispyware. Actually i dont know if put this in off from control panel is ok for antivirus... anyway try to switch off or on and see what's change. There will be no problem for the OS.
  Mr.Asus -  
it gives me a nice happy BSOD
A crucial component of vets real time antivirus protection
läßt meinen computer sich unvorhersehbar neustarten

Summary: Average user rating of VETMONNT.sys: based on 3 votes with 5 user comments. One user thinks VETMONNT.sys is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous. One user thinks VETMONNT.sys is dangerous and recommends removing it. 3 users don't grade VETMONNT.sys ("not sure about it").

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Best practices for resolving VETMONNT issues

A clean and tidy computer is the key requirement for avoiding problems with VETMONNT. 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 VETMONNT.sys 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

VETMONNT.sys [all]