What is cvintdrv?

Cvintdrv.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 cvintdrv.sys is a Windows system file or if it belongs to an application that you can trust.

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Cvintdrv.sys file information

The process known as cvintdrv or NI LabVIEW Run-Time Engine (version 8.0) belongs to software NI LabVIEW Run-Time Engine or PSI Display by National Instruments ( or EControls (

Description: Cvintdrv.sys is not essential for the Windows OS and causes relatively few problems. The cvintdrv.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 7,140 bytes (62% of all occurrences), 4,096 bytes or 6,848 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. It is a file with no information about its developer. The program is not visible. There is no detailed description of this service. The cvintdrv.sys file is not a Windows core file. cvintdrv.sys appears to be a compressed file. Therefore the technical security rating is 51% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with cvintdrv.sys, you could completely remove NI LabVIEW Run-Time Engine or NI LabWindows/CVI 7.1 Run (Control Panel ⇒ Uninstall a Program).

Recommended: Identify cvintdrv.sys related errors

Important: Some malware disguises itself as cvintdrv.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the cvintdrv.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

Low-level support driver for Windows 2000/NT/XP used by LabWindows/CVI (by National Instruments)
  ded   (further information)
Part of LabWindows/CVI
It is part of the National Instruments CVI software (included with Multisim/Ultiboard/etc). Does not load properly on Vista 64-bit, but works fine on x86 editions of Vista and XP.
  Graham Sutherland   (further information)

Summary: Average user rating of cvintdrv.sys: based on 3 votes with 3 user comments. 3 users think cvintdrv.sys is essential for Windows or an installed application.

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Best practices for resolving cvintdrv issues

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

cvintdrv.sys [all]