Defraggler Defraggler

A guide to uninstall Defraggler from your system

Defraggler is a Windows application. Read below about how to remove it from your computer. It was developed for Windows by Piriform. Further information on Piriform can be found here. The application is often placed in the C:\Program Files\Defraggler directory (same installation drive as Windows). Defraggler's entire uninstall command line is C:\Program Files\Defraggler\uninst.exe. The program's main executable file is called Defraggler.exe and its approximative size is 2.71 MB (2842976 bytes).

The following executables are contained in Defraggler. They take 3.72 MB (3896104 bytes) on disk.

  • Defraggler.exe (2.71 MB)
  • df.exe (877.84 KB)
  • uninst.exe (150.60 KB)

The current web page applies to Defraggler version 2.10 only. For more Defraggler versions please click below: to view all...
After the uninstall process, the application leaves leftovers on the PC. Some of these are shown below.

Folders left behind when you uninstall Defraggler:
  • C:\Documents and Settings\All Users\Start Menu\Programs\Defraggler
  • C:\Program Files\Defraggler

Check for and remove the following files from your disk when you uninstall Defraggler:
  • C:\Documents and Settings\All Users\Desktop\Defraggler.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\Defraggler\Defraggler Homepage.url
  • C:\Documents and Settings\All Users\Start Menu\Programs\Defraggler\Defraggler.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\Defraggler\Uninstall Defraggler.lnk

Registry that is not cleaned:
  • HKEY_CLASSES_ROOT\Software\Piriform\Defraggler
  • HKEY_CURRENT_USER\Software\Piriform\Defraggler
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Defraggler
  • HKEY_LOCAL_MACHINE\Software\Piriform\Defraggler

Additional values that you should remove:
  • HKEY_CLASSES_ROOT\Software\Piriform\Defraggler\InstallPath
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Defraggler\DisplayIcon
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Defraggler\DisplayName
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Defraggler\InstallLocation

A way to remove Defraggler from your PC with the help of Advanced Uninstaller PRO

Defraggler is an application offered by the software company Piriform. Frequently, people decide to uninstall this application. This is troublesome because removing this manually requires some skill related to removing Windows applications by hand. One of the best SIMPLE procedure to uninstall Defraggler is to use Advanced Uninstaller PRO. Take the following steps on how to do this:

1. If you don't have Advanced Uninstaller PRO already installed on your Windows PC, add it. This is a good step because Advanced Uninstaller PRO is a very potent uninstaller and all around tool to maximize the performance of your Windows computer.


  • go to Download Link
  • download the setup by clicking on the DOWNLOAD NOW button
  • set up Advanced Uninstaller PRO
2. Start Advanced Uninstaller PRO. It's recommended to take your time to get familiar with the program's interface and wealth of features available. Advanced Uninstaller PRO is a powerful PC management program.

3. Click on the General Tools button
Go to General Tools

4. Click on the Uninstall Programs button
Go to Uninstall Programs

5. A list of the programs existing on the computer will appear

6. Scroll the list of programs until you locate Defraggler or simply activate the Search feature and type in "Defraggler". The Defraggler application will be found very quickly. When you click Defraggler in the list , some data regarding the application is shown to you:

  • Safety rating (in the left lower corner). This tells you the opinion other people have regarding Defraggler, ranging from "Highly recommended" to "Very dangerous".
  • Opinions by other people - Click on the Read reviews button.
  • Technical information regarding the application you want to remove, by clicking on the Properties button.
7. Press the Uninstall button. A window asking you to confirm will appear. Confirm the uninstall by pressing Uninstall. Advanced Uninstaller PRO will automatically remove Defraggler.
Uninstall Defraggler

8. After uninstalling Defraggler, Advanced Uninstaller PRO will ask you to run a cleanup. Press Next to go ahead with the cleanup. All the items of Defraggler that have been left behind will be found and you will be asked if you want to delete them. By removing Defraggler using Advanced Uninstaller PRO, you can be sure that no Windows registry entries, files or folders are left behind on your computer.

Your Windows computer will remain clean, speedy and ready to serve you properly.

Geographical user distribution

  • 10.0
  • Windows Vista (6.0)
  • Windows 7 (6.1)
  • Windows XP (5.1)
  • Windows 8 (6.2)
  • Windows 8.1 (6.3)
  • Windows Server 2003 (5.2)
Software Application


This page is not a piece of advice to remove Defraggler by Piriform from your computer, we are not saying that Defraggler by Piriform is not a good application. This text only contains detailed info on how to remove Defraggler in case you decide this is what you want to do. The information above contains registry and disk entries that other software left behind and Advanced Uninstaller PRO discovered and classified as "leftovers" on other users' computers.

2016-06-19 / Written by Daniel Statescu for Advanced Uninstaller PRO

follow @DanielStatescu
Last update on: 2016-06-19 12:49:39.927