O&O Defrag Professional O&O Defrag Professional

How to uninstall O&O Defrag Professional from your PC

You can find below details on how to uninstall O&O Defrag Professional for Windows. It is made by O&O Software GmbH. You can find out more on O&O Software GmbH or check for application updates here. You can get more details related to O&O Defrag Professional at . The program is frequently found in the C:\Program Files\OO Software\Defrag folder. Keep in mind that this path can differ depending on the user's decision. O&O Defrag Professional's full uninstall command line is MsiExec.exe /I{8027B1DD-D875-4315-8FE9-B2CFDD1BB8F1}. The application's main executable file is labeled oodcnt.exe and it has a size of 4.18 MB (4382024 bytes).

O&O Defrag Professional installs the following the executables on your PC, occupying about 12.59 MB (13206120 bytes) on disk.

  • oodag.exe (2.87 MB)
  • oodcmd.exe (1.58 MB)
  • oodcnt.exe (4.18 MB)
  • oodsvct.exe (108.32 KB)
  • oodtray.exe (3.85 MB)

The information on this page is only about version 14.0.145 of O&O Defrag Professional. You can find below a few links to other O&O Defrag Professional versions:

...click to view all...
O&O Defrag Professional has the habit of leaving behind some leftovers.

Folders remaining:
  • C:\Program Files\OO Software\Defrag
  • C:\Users\UserName\AppData\Local\O&O\O&O Defrag

The files below are left behind on your disk when you remove O&O Defrag Professional:
  • C:\Program Files\OO Software\Defrag\oodag.exe
  • C:\Program Files\OO Software\Defrag\OODAGMG.DLL
  • C:\Program Files\OO Software\Defrag\OODAGRS.DLL
  • C:\Program Files\OO Software\Defrag\oodagt.adm
  • C:\Program Files\OO Software\Defrag\oodcmd.exe
  • C:\Program Files\OO Software\Defrag\oodcmdrs.dll
  • C:\Program Files\OO Software\Defrag\oodcnt.exe
  • C:\Program Files\OO Software\Defrag\oodgui.adm
  • C:\Program Files\OO Software\Defrag\oodguirs.dll
  • C:\Program Files\OO Software\Defrag\oodjobd.dll
  • C:\Program Files\OO Software\Defrag\oodjobdr.dll
  • C:\Program Files\OO Software\Defrag\oodpe.chm
  • C:\Program Files\OO Software\Defrag\oodpe.msc
  • C:\Program Files\OO Software\Defrag\oodpeo.ocx
  • C:\Program Files\OO Software\Defrag\oodpep.dll
  • C:\Program Files\OO Software\Defrag\oodperwr.dll
  • C:\Program Files\OO Software\Defrag\oodpesur.dll
  • C:\Program Files\OO Software\Defrag\oodsh.dll
  • C:\Program Files\OO Software\Defrag\oodshrs.dll
  • C:\Program Files\OO Software\Defrag\oodsvct.exe
  • C:\Program Files\OO Software\Defrag\oodtray.exe
  • C:\Program Files\OO Software\Defrag\oodtrrs.dll
  • C:\Program Files\OO Software\Defrag\oorwiz2.dll
  • C:\Program Files\OO Software\Defrag\oosu.dll
  • C:\Program Files\OO Software\Defrag\readme.txt
  • C:\Program Files\OO Software\Defrag\rpcdat01.htm
  • C:\Program Files\OO Software\Defrag\rpcdrv01.htm
  • C:\Program Files\OO Software\Defrag\rpcmn01.htm
  • C:\Users\UserName\AppData\Local\O&O\O&O Defrag\ocx\ocxdata.bin
  • C:\Users\UserName\AppData\Local\O&O\O&O Defrag\reports\{549DEB0A-DDD3-473A-8238-CE1078C6E7BF}\report.brp
  • C:\Users\UserName\AppData\Local\O&O\O&O Defrag\reports\index\DESKTOP-8S4PFVR.bri
  • C:\Windows\Installer\{7BC6B815-D9F1-4C43-82B4-7CB25458DD31}\ARPPRODUCTICON.exe

Use regedit.exe to manually remove from the Windows Registry the keys below:
  • HKEY_CURRENT_USER\Software\O&O\O&O Defrag
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\518B6CB71F9D34C4284BC72B4585DD13
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\{7BC6B815-D9F1-4C43-82B4-7CB25458DD31}
  • HKEY_LOCAL_MACHINE\Software\O&O\O&O Defrag

Additional values that are not cleaned:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\518B6CB71F9D34C4284BC72B4585DD13\ProductName
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Folders\C:\Program Files\OO Software\Defrag\
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Folders\C:\Windows\Installer\{7BC6B815-D9F1-4C43-82B4-7CB25458DD31}\
  • HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\OODefragAgent\ImagePath

A way to uninstall O&O Defrag Professional with Advanced Uninstaller PRO

O&O Defrag Professional is an application offered by the software company O&O Software GmbH. Some computer users want to erase this program. This is troublesome because removing this manually requires some advanced knowledge related to removing Windows applications by hand. One of the best EASY procedure to erase O&O Defrag Professional 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 PC, add it. This is good because Advanced Uninstaller PRO is a very efficient uninstaller and general utility to take care of your PC.


2. Run Advanced Uninstaller PRO. Take your time to get familiar with Advanced Uninstaller PRO's design and wealth of functions available. Advanced Uninstaller PRO is a powerful Windows tool.

3. Press the General Tools category
Go to General Tools

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

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

6. Scroll the list of applications until you locate O&O Defrag Professional or simply activate the Search feature and type in "O&O Defrag Professional". The O&O Defrag Professional application will be found very quickly. When you select O&O Defrag Professional in the list of applications, the following data regarding the program is available to you:

  • Safety rating (in the lower left corner). This tells you the opinion other users have regarding O&O Defrag Professional, ranging from "Highly recommended" to "Very dangerous".
  • Opinions by other users - Press the Read reviews button.
  • Technical information regarding the application you are about to uninstall, by pressing the Properties button.
For example you can see that for O&O Defrag Professional:

  • The web site of the program is: http://www.oo-software.com
  • The uninstall string is: MsiExec.exe /I{8027B1DD-D875-4315-8FE9-B2CFDD1BB8F1}
7. Click the Uninstall button. A window asking you to confirm will show up. Confirm the removal by clicking Uninstall. Advanced Uninstaller PRO will then uninstall O&O Defrag Professional.
Uninstall O&O Defrag Professional

8. After removing O&O Defrag Professional, Advanced Uninstaller PRO will offer to run a cleanup. Press Next to go ahead with the cleanup. All the items that belong O&O Defrag Professional which have been left behind will be found and you will be able to delete them. By uninstalling O&O Defrag Professional using Advanced Uninstaller PRO, you are assured that no Windows registry items, files or folders are left behind on your PC.

Your Windows system will remain clean, speedy and ready to take on new tasks.


Geographical user distribution

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


This page is not a piece of advice to remove O&O Defrag Professional by O&O Software GmbH from your computer, nor are we saying that O&O Defrag Professional by O&O Software GmbH is not a good application. This page simply contains detailed instructions on how to remove O&O Defrag Professional supposing you decide this is what you want to do. The information above contains registry and disk entries that our application Advanced Uninstaller PRO stumbled upon and classified as "leftovers" on other users' computers.

2016-06-22 / Written by Andreea Kartman for Advanced Uninstaller PRO

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Last update on: 2016-06-22 12:05:28.133