Windows Removal Guides: How to Completely Uninstall Defraggler

First of all, happy new year to you all! This is the first blog in 2018! We’ll offer the latest guides to completely remove Defraggler  today. Blueman6, from a member in forum, asking a question about How to Completely Uninstall Defraggler 2.14:

“I do not even recall installing Defraggler 2.14 (I use the built-in XP Defrag) but it is installed and I would like to uninstall it.

In the Defraggler 2.14 folder are a ‘Lang’ folder, Defrag.exe, Defrag Config settings file, Defraggler64 file, DefragglerShell64.dll file, Defraggler.dll file, df file, df64 file, License file, and Portable file but no uninstall-related files.

I opened Defraggler 2.14 and it looks similar to Windows XP’s built-in Defragmenter. I clicked ‘About’ and it states Piriform Defraggler 2.14 so I assume that it is a legitimate piece of software.

It is not listed under ‘Add/Remove Programs’ or listed on the ‘Start’ menu-If it was as simple as doing that, I would not have created a thread.”

Apparently, this user is trapped in the Defraggler uninstall on how to do to successfully uninstall it due to none-work of built-in XP Defrag and Add/Remove Programs. If you have the seam trouble in removal, check this page carefully for the conventional instruction to fully remove Defraggler from PC.


Program Basic Info

Defraggler is a defragmentation utility which allows you to defragment individual/groups of files (in a folder) or an entire disk partition on your computer system either by your command or automatically on a schedule. It supports FAT32, NTFS, and exFAT.

Program Details

File Name: dfsetup221.exe
File Type: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive
File Size: 4619752
Last Modified Date: 12/27/2017 12:00:00 AM
MD5: 93e4cd62447c06bb2fdc5ad087176de5
SHA-246: 29a8e556ac9db50b809da213ba3cc2e80d88e90a90e6c58e8177a5f3cf6b134d
CRC32: 202ED43E

So this is about the latest version removal guide of Defraggler 2.21, keep reading to more specific steps.

Automatically Uninstall Defraggler with Max Uninstaller

If like Blueman6’s situation, built-in XP Defrag and Add/Remove Programs wouldn’t work to uninstall Defraggler, then you might properly install a third party in your computer to help.

Step 1. Download & install Max Uninstaller.

Click the green button abouve to easily download &install MU in your device, it supports for all Windows systems include Windows XP/Windows Vista/Windows 7/Windows 8.1/Windows 10 (32bit&64bit).

step 1

STEP 2. Run Analysis > Complete Uninstall.

Launch Max Uninstaller, and you will see clearly what programs you’re having on the computer. Find & select Defraggler as your target, then click Run Analysis to scan for all the related files. > Review the list, keep the items checked, and hit Complete Uninstall to confirm the removal.

step 2

Click Next to conduct the removal, and check the second option to reboot computerwhen turn to next dialog if you like.



STEP 3. Scan Leftovers > Delete Leftovers.

Wait a while to run the removal process of its default uninstaller of Defraggler, click Scan Leftovers after it finished when the button turn green. Hit Delete Leftovers to completely remove Defraggler from your PC.

Uninstall Defraggler

Now click Back to Step 1 and you’ll find Defraggler is gone from the installed programs list, which means you have successfully remove it now. Watch more details in this tutorial video bellow:

Manually Remove Defraggler via Windows Uninstaller

Also you can try on the manual approach to uninstall Defraggler if it is in the list of Programs and Features.

STEP 1. Reboot your computer into the Safe Mode as an Administrator

1. To smoothly conduct the removal process, you’d better log in the system as an Administrator and reboot your computer as the Safe Mode.

STEP 2. Quit Defraggler from running

2. Right-click on Defraggler icon on the System Tray, and select Exit to close the program.

Or right-click the taskbar and select Task Manager, terminate related process by selecting it in the list and clicking End.


Step 3. Remove Defraggler IN Programs and Features

3. Right-click the Start button and select Programs and Features to launch the Programs and Features window.

4. Find & double-click Defraggler to activate its default uninstall wizard in the installed programs list of your device.


5. Follow the prompts to proceed with the removal, provide confirmation when it’s needed, then wait for the uninstall wizard to finish its job.

Click Next to conduct the removal, and check the second option to reboot computerwhen turn to next dialog if you like.



Then you’ll find Defraggler might gone from the Programs and Features, but you need also clean up all the registry files in Registry Editor.

Step 4. Clean up all the registry files in Registry Editor

6. Press the shortcuts of Windows key +R to negative Run dialog, input “regedit” to negative the Registry Editor.

7. Click File > Export… to create a back-up (.reg file) of the whole Registry in case of any irretrievable mistake: press Ctrl +F to launch the search box.

8. Type the key word Defraggle to delete the registry files


Navigate to the following folders and delete them:



9. Until all of them are cleaned up then shut down Registry Editor.

10. Reboot your device to take effect.

Little tips: Defragment Hard Disk in Windows to Improve PC’s Performance

Without a Defragmentation tool, you can still defragment your hard disks on your own. Here are the steps to go through:

  1. Type “Defragment” in the Search box on the taskbar, select Defragment and Optimize Drives in the result.
  2. Under Status, select the disk you want to defragment.
  3. Click Analyze. If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.

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