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What is DfrgNtfs.exe?

DfrgNtfs.exe is a executable file (a program) within Windows. The filename extension .exe denotes an executable file. You should only run executable files from publishers you trust, because executable files can potentially change your computer settings or harm your computer. The free file information forum can help you determine if DfrgNtfs.exe is a virus, trojan, spyware, or adware that you can remove, or a file belonging to a Windows system or to an application you can trust.

DfrgNtfs.exe file information

The process known as Disk Defragmenter NTFS Module belongs to software Windows Disk Defragmenter or Diskeeperâ„¢ Disk Defragmenter by Microsoft Corp. and Executive Software International (www.microsoft.com) or Diskeeper (www.diskeeper.com) or Executive Software International (www.executive.com).

Description: The original DfrgNtfs.exe is an important part of Windows and rarely causes problems. DfrgNtfs.exe is located in the folder C:\Windows\System32. Known file sizes on Windows 7/XP are 104,960 bytes (62% of all occurrences), 105,472 bytes and 5 more variants. http://www.file.net/process/dfrgntfs.exe.html 
DfrgNtfs.exe is a Windows core system file. The program has no visible window. It is a trustworthy file from Microsoft. Therefore the technical security rating is 7% dangerous; however you should also read the users reviews.

Recommended: Identify DfrgNtfs.exe related errors

If DfrgNtfs.exe is located in a subfolder of "C:\Program Files", the security rating is 29% dangerous. The file size is 401,500 bytes (30% of all occurrences), 585,728 bytes, 466,944 bytes, 405,596 bytes or 237,662 bytes. The program is not visible. You can uninstall this program in the control panel. The file is not a Windows core file. DfrgNtfs.exe is able to hide itself.
You can uninstall the associated program (Start > Control Panel > Add/Remove programs > Diskeeper Professional Edition or Diskeeper Professional).

If DfrgNtfs.exe is located in a subfolder of C:\, the security rating is 26% dangerous. The file size is 585,728 bytes. You can uninstall this program in the control panel. The program has no visible window. The DfrgNtfs.exe file is not a Windows system file. DfrgNtfs.exe is able to hide itself.
You can uninstall the associated program (Start > Control Panel > Add/Remove programs > Diskeeper Professional).

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

tried to acces a outlook identity file
  Gerardo Martinez  
on some winxp machines it runs in the background during idle moments, no DiskKeeper involved. it stops when you use the mouse/keyboard, i think.
diskeeper is a defragment program and its totaly safe
defragments prefetch while system is idle
This file should not be running unless windows defrag is running.
  matt garver  
doesn't hurt is just annoying - part of windows optimise/compress disk space - runs on sartup
Microsoft removed it from it's TechNet site
this program still ran after closing it out - (hit stop) and everything. thought it was a worm running, could be considering I'm running virus scanner now. needless to say it will not stop when I go to TM and say 'end process' / 'end process tree'
It is a windows service. It is called when system is idle and windows optimize is run. It can be turned off with the tweakui downloadable from microsoft. Uncheck the "optimize hard disk when idle" option under the General panel. TweakUI can be downloaded here http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx
NTFS defragger, windows will start this when the PC is idle for some time.
In my case McAfee Internet Security had started this task. No window was visible. So in my case Windows Defrag was not running, but nothing wrong.
All I know is it hits performance in a big way and I have to stop it (Task manager) to get any decent performance from the server. I schedule a defrag job and expect it to stop once I stop the job if over running.
  Paul G  
I have a returning problem with it. When it pops up I must shut the computer down by the off switch nothing else works then.
  Mieke Nelissen  
Safe when in the right directory. Automatically runs when computer is idle for abput 10 mins. To turn off, go to the hard drive's properties and untick the Indexing Services box.
I always get a warning from Comodo Defense+, that this file wants to access the file system, and always after i return to system, when it was locked. (the system went idel) According to miaras comment, it could be a valid operation.
Part of "Windows Defragmenter". Also part of call up for Diskeeper which is the company that created the Windows Defragmenter.
  John Campbell  

Rating chart

Summary: Average user rating of DfrgNtfs.exe: based on 20 votes with 16 user comments.
14 users think DfrgNtfs.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users think it's neither essential nor dangerous. One user suspects danger. 2 users think DfrgNtfs.exe is dangerous and recommend removing it. 3 users don't grade DfrgNtfs.exe ("not sure about it").

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DfrgNtfs scanner

Security Task Manager shows all running Windows tasks including embedded hidden functions (e.g. keyboard or browser monitoring, autostart entry). A unique security risk rating indicates the likelihood of the process being potential spyware, malware, keylogger or a Trojan.

Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, trojans, keyloggers, malware and tracking threats from your hard disk. Ideal supplement to Security Task Manager.

SpeedUpMyPC scans, cleans, repairs and optimizes your computer.

Other processes

DfrgNtfs.exe [all]