Defraggler Defraggler

How to uninstall Defraggler from your system

Defraggler is a Windows application. Read below about how to uninstall it from your computer. It was developed for Windows by Piriform. More info about Piriform can be seen here. The application is frequently installed in the C:\Program Files\Defraggler directory (same installation drive as Windows). You can uninstall Defraggler by clicking on the Start menu of Windows and pasting the command line C:\Program Files\Defraggler\uninst.exe. Keep in mind that you might be prompted for administrator rights. The program's main executable file is labeled Defraggler.exe and its approximative size is 3.25 MB (3407640 bytes).

The following executables are installed alongside Defraggler. They occupy about 4.58 MB (4800432 bytes) on disk.

  • Defraggler.exe (3.25 MB)
  • df.exe (1.16 MB)
  • uninst.exe (168.88 KB)

The information on this page is only about version 2.16 of Defraggler. You can find below info on other releases of Defraggler: to view all...
Several files, folders and registry data will not be uninstalled when you want to remove Defraggler from your PC.

Folders remaining:
  • C:\Program Files\Defraggler

Usually, the following files remain on disk:
  • C:\Program Files\Defraggler\DefragglerShell64.dll

Registry that is not uninstalled:
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Defraggler
  • HKEY_LOCAL_MACHINE\Software\Piriform\Defraggler
  • HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\App Management\YUCache\Defraggler
  • HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\App Paths\defraggler.exe

How to erase Defraggler from your PC with Advanced Uninstaller PRO

Defraggler is a program released by the software company Piriform. Some people try to erase this application. Sometimes this is hard because doing this by hand takes some skill related to PCs. The best SIMPLE manner to erase Defraggler is to use Advanced Uninstaller PRO. Here is how to do this:

1. If you don't have Advanced Uninstaller PRO on your Windows system, add it. This is good because Advanced Uninstaller PRO is a very potent uninstaller and general utility to take care of your Windows PC.


  • navigate to Download Link
  • download the program by clicking on the green DOWNLOAD NOW button
  • install Advanced Uninstaller PRO
2. Run Advanced Uninstaller PRO. It's recommended to take your time to admire Advanced Uninstaller PRO's interface and wealth of features available. Advanced Uninstaller PRO is a powerful package of utilities.

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

4. Activate the Uninstall Programs tool
Go to Uninstall Programs

5. All the applications installed on your PC will be made available to you

6. Navigate the list of applications until you locate Defraggler or simply activate the Search feature and type in "Defraggler". The Defraggler program will be found very quickly. Notice that when you click Defraggler in the list , some data regarding the application is available to you:

  • Star rating (in the left lower corner). This explains the opinion other users have regarding Defraggler, ranging from "Highly recommended" to "Very dangerous".
  • Reviews by other users - Click on the Read reviews button.
  • Technical information regarding the application you are about to uninstall, by clicking on the Properties button.
7. Press the Uninstall button. A confirmation dialog will appear. Confirm the removal by clicking Uninstall. Advanced Uninstaller PRO will then remove Defraggler.
Uninstall Defraggler

8. After removing Defraggler, Advanced Uninstaller PRO will ask you to run an additional cleanup. Click Next to start the cleanup. All the items of Defraggler that have been left behind will be detected and you will be asked if you want to delete them. By uninstalling Defraggler using Advanced Uninstaller PRO, you can be sure that no registry entries, files or folders are left behind on your PC.

Your computer will remain clean, speedy and ready to run without errors or problems.

Geographical user distribution

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


The text above is not a recommendation to uninstall Defraggler by Piriform from your PC, we are not saying that Defraggler by Piriform is not a good application for your PC. This text only contains detailed instructions on how to uninstall Defraggler in case you decide this is what you want to do. Here you can find registry and disk entries that Advanced Uninstaller PRO discovered and classified as "leftovers" on other users' PCs.

2016-06-19 / Written by Dan Armano for Advanced Uninstaller PRO

follow @danarm
Last update on: 2016-06-19 12:03:44.613