Piriform Defraggler EXE df.exe

Download Df.exe and Troubleshoot EXE Errors

Last Updated: 11/26/2023
[Time Needed for Reading: ~4-6 minutes]

df.exe is considered a type of Defraggler file. It is most-commonly used in Defraggler developed by Piriform. It uses the EXE file extension and is considered a Win32 EXE (Dynamic link library) file.

The initial introduction of df.exe released in Defraggler 2.21.993 was for Windows 10 on 03/16/2016. This is not only most recent release from Piriform, but it's the only version known in existence.

Continue reading below to discover detailed file information, EXE file troubleshooting, and free downloads of several versions of df.exe.

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File Overview


General Information ✻
File Name: df.exe
File Extension: EXE file extension
Description: Defraggler
Object File Type: Dynamic link library
File Operating System: Win32
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Piriform Ltd
Software Program: Defraggler
Legal Copyright: Copyright © 2007-2016 Piriform Ltd
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x474c2
Code Size: 816640
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What are df.exe Error Messages?


df.exe Runtime Errors

Runtime errors are Defraggler errors that occur during "runtime". Runtime is pretty self-explanatory; it means that these EXE errors are triggered when df.exe is attempted to be loaded either when Defraggler is starting up, or in some cases already running. Runtime errors are the most common form of EXE error you will encounter using Defraggler.

In most cases, df.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these df.exe error messages mean that Defraggler was either unable to locate this file on startup, or the file is corrupt, resulting in a prematurely-aborted startup process. Generally, Defraggler will be unable to start without resolving these errors.

Some of the most common df.exe errors include:

  • df.exe - Bad Image.
  • df.exe Application Error.
  • df.exe could not be found.
  • df.exe could not be installed.
  • df.exe could not be launched. Class not registered.
  • df.exe could not be started.
  • df.exe failed to initialize properly.
  • df.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
  • df.exe is not a valid Win32 application.
  • df.exe is not running.
  • Cannot find df.exe.
  • Error starting program: df.exe.
  • Faulting Application Path: df.exe.
  • The file df.exe is missing or corrupt.
  • Windows failed to start - df.exe.
System Error


The program can’t start because df.exe is missing from your computer. Try reinstalling the program to fix this problem.

Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Finding the source of the df.exe error is key to properly resolving these errors. Although most of these EXE errors affecting df.exe will happen during startup, occasionally you will encounter a runtime error while using Defraggler. This can occur due to poor programming on behalf of Piriform Ltd, conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of df.exe errors can occur if it has been accidentally moved, deleted, or corrupted by a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix df.exe Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your df.exe issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the df.exe error, please proceed to the Step 2 below.

Step 2: If recently installed Defraggler (or related software), uninstall then try reinstalling Defraggler software.

You can uninstall Defraggler software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for Defraggler 2.21.993 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Defraggler software.

If this Step 2 fails as well, please proceed to the Step 3 below.

Defraggler 2.21.993

Piriform

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many df.exe error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the df.exe error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your df.exe File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate df.exe file version. We maintain a comprehensive database of 100% malware-free df.exe files for every applicable version of Defraggler. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download df.exe Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Defraggler folder location:
    Windows 10: C:\Program Files\Defraggler\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve df.exe problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download df.exe Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying df.exe to your appropriate Windows system directory. Piriform typically does not release Defraggler EXE files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing df.exe and all other EXE files for Defraggler. An incorrectly installed EXE file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10
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Files Related to df.exe


EXE Files Related to df.exe

File Name Description Software Program (Version) File Size (bytes) File Location
df.exe Defraggler Defraggler (2.21.0.993) 1181400 C:\Program Files\WindowsApps\Microsoft.BingMaps...
OneDriveSetup.exe Microsoft OneDrive (32 bit) Setup Microsoft OneDrive (19.192.0926.0012) 35086184 C:\Windows\Microsoft.NET\Framework\v4.0.30319\
OneDriveUpdaterService... Updater Service Microsoft OneDrive (19.192.0926.0012) 2487144 C:\Users\Tester\AppData\Local\
OneDrive.exe Microsoft OneDrive Microsoft OneDrive (19.192.0926.0012) 1585000 C:\Users\Tester\AppData\Local\Microsoft\Windows\
FileCoAuth.exe Microsoft OneDriveFile Co-Authoring Executable Microsoft OneDrive (19.192.0926.0012) 506728 C:\Users\Tester\AppData\Local\Microsoft\Windows\

Other Files Related to df.exe

File Name Description Software Program (Version) File Size (bytes) File Location
Sessions.xml Extensible Markup Language CCleaner 5.61.7392 5302698 C:\Windows\servicing\Sessions\
setupact.log Log Recuva 1.53.1087 62521 C:\Windows\Panther\UnattendGC\
SA.DAT Game Data CCleaner 5.61.7392 6 C:\WINDOWS\Tasks\
WmiApRpl.ini Windows Initialization CCleaner 5.61.7392 29736 C:\Windows\inf\WmiApRpl\0009\
api-ms-win-core-profil... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 10600 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...


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