What is ntfs?

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

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

Ntfs.sys file information

The process known as NT File System Driver belongs to software Microsoft Windows Operating System by Microsoft (

Description: The original ntfs.sys is an important part of Windows and rarely causes problems. Ntfs.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 574,976 bytes (58% of all occurrences), 574,464 bytes, 574,592 bytes or 1,211,264 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The file is a Windows system file. The program is not visible. The ntfs.sys file is a trustworthy file from Microsoft. There is no detailed description of this service. ntfs.sys appears to be a compressed file. Therefore the technical security rating is 1% dangerous, however you should also read the user reviews.

Recommended: Identify ntfs.sys related errors

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

Required by Windows, NTFS Filesystem driver.
  Wizzkid007   (further information)
I have a problem my computer dont start because ntfs.sys is corrupted or not instaled. help plz
Required driver to be able to access any NTFS partition
Without it, Windows will not start. A paradox arises. NTFS.sys has to be read off an ntfs volume, so ntfs.sys must be loaded to access ntfs.sys!
This is the file that makes my computer enter in Blue Screen when I start windows
How to fixed "Missing or corrupt Ntfs.sys" see link
  Tom   (further information)

Rating chart

Summary: Average user rating of ntfs.sys: based on 6 votes with 6 user comments. 5 users think ntfs.sys is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users don't grade ntfs.sys ("not sure about it").

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Best practices for resolving ntfs issues

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

ntfs.sys [all]