84,488,480 programs installed

Should I remove O&O Defrag Professional Edition?

What percent of users and experts removed it?
9% remove it91% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #14,616
United States Rank #24,266
Reach 0.0195%
Lifespan of installation (until removal)
< 11.76 days
347.06 days >
Average installed length: 182.35 days


11.0.3265 5.99%
11.0.3255 0.78%
10.0.2063 5.73%
10.0.1670 2.60%
10.0.1634 45.31%
8.6.2336 3.65%
8.6.2294 2.60%
8.5.1932 0.52%
8.5.1788 8.33%
8.0.1564 1.04%
8.0.1398 13.28%
8.0.1341 5.99%
6.5.851 1.82%
6.0.710 0.78%
6.0.609 0.26%
4.0.508 1.30%

O&O Defrag Professional Edition

What is O&O Defrag Professional Edition?  (from O&O Software GmbH)

If you work on computers a lot, then slow system and program starts, endless rendering and memory processes, or even system crashes when playing can quickly ruin your enjoyment. Defragmenting your PC can hugely accelerate the speed you can work on your PC. When you defragment, those files fragmented across the hard dis...  Read more


O&O Defrag Professional Edition is a program developed by O&O Software GmbH. The most used version is 10.0.1634, with over 98% of all installations currently using this version. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times (the schedule varies depending on the version). When installed, it will add a context menu handler to the Windows shell in order to provide quick access to the program. The software installer includes 89 files and is usually about 9.52 MB (9,981,176 bytes). In comparison to the total number of users, most PCs are running the OS Windows XP as well as Windows 7 (SP1). While about 33% of users of O&O Defrag Professional Edition come from Germany, it is also popular in the United States and Taiwan.

Program detailsProgram details

URL: www.oo-software.de
Help link: www.oo-software.com
Installation folder: C:\Program Files\OO Software\Defrag Professional\
Uninstaller: MsiExec.exe /I{087BEB30-5324-4615-A097-51DB44EC5B71}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 9.52 MB

Program filesFiles installed by O&O Defrag Professional Edition

  • oodpeabr.dll - O&O Defrag Professional Edition (O&O Defrag About Resource DLL (ENU))
  • oorwiz.dll - O&O Registration Wizard
  • oociplrs.dll
  • ooemcrs.dll - O&O EMC Resources (ENU)
  • oorcirs.dll
  • oodcmd.exe - O&O Defrag (O&O Defrag CommandLine Utility (x64))
  • oodcmdrs.dll - O&O Defrag Commandline Resources (ENU) (Win32)
  • oodcnt.exe - O&O Defrag Container (x64)
  • oodcocp.dll
  • oodguirs.dll - O&O Defrag Resources (ENU) (Win32)
  • oodjobd.dll - O&O Defrag Job Dialog (x64)
  • oodjobdr.dll - O&O Defrag Job Dialog Resource DLL (ENU) (Win32)
  • oodpeabr_original.dll - O&O Defrag About Resource DLL (ENU) (Win32)
  • oodpeo.ocx - O&O Defrag OCX (x64)
  • oodpep.dll
  • oodperwr.dll - O&O Defrag Registration Wizard Resources (ENU) (Win32)
  • oodpesur.dll - O&O Defrag SplashUp Resources (ENU) (Win32)
  • oodpetpr.dll - O&O Defrag Tip Resources (ENU) (Win32)
  • oodseabr.dll
  • oodserwr.dll - O&O Defrag Registration Wizard Resources (ENU)
  • oodsetpr.dll - O&O Defrag Tip Resources (ENU)
  • oodsh.dll - O&O Defrag Shell Extension
  • oodshrs.dll - O&O Defrag Shell Extension Resource DLL (ENU) (Win32)
  • oodwiz.dll - O&O Defrag Wizard (x64)
  • oodwizrs.dll - O&O Defrag Wizard Resource DLL (ENU) (Win32)
  • ooabout.dll - O&O SDK (O&O About Dialog (x64))
  • oorwiz2.dll - O&O Registration Wizard (Win32)
  • oosu.dll - O&O SplashUp (x64)
  • ootip.dll - O&O Tip Dialog (x64)

Program behaviorsBehaviors exhibited

Context Menu Handler
  • oodsh.dll added to Windows Explorer under the name 'OODefrag' with a class of {48EAD1E1-ECF2-4a85-AA09-1C44FBEED451}.
Scheduled Task
  • oodcnt.exe is scheduled as a task with the class '{A9D63769-E9C9-405B-A5C7-9423360E83D4}' (runs on registration).

How do I remove O&O Defrag Professional Edition?

You can uninstall O&O Defrag Professional Edition from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program O&O Defrag Professional Edition, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove O&O Defrag Professional Edition.

Win XP 58%
Win 7 0%
Uninstall it 9%
Keep it 91%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows XP 64.84%
Windows 7 22.14%
Windows Vista 10.68%
Windows 10 2.08%
Windows Server 2003 0.26%
Which OS releases does it run on?
Microsoft Windows XP 64.64%
Windows 7 Ultimate 8.71%
Windows Vista Home Premiu... 8.44%
Windows 7 Home Premium 6.60%
Windows 7 Professional 6.07%
Windows Vista Ultimate 1.85%

Distribution by countryGeography

32.84% of installs come from Germany
Which countries install it?
  Germany 32.84%
  United States 17.41%
  Taiwan 7.96%
  France 5.22%
  Italy 4.98%
  Poland 2.49%
  Romania 1.99%
  Czech Republic 1.74%
  Croatia 1.74%
  United Kingdom 1.74%
  Austria 1.49%
  Netherlands 1.49%
  Sweden 1.49%
  Canada 1.24%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
American Megatrends 16.07%
Dell 15.48%
Intel 13.10%
Acer 13.10%
Hewlett-Packard 11.31%
Sahara 4.17%
Medion 4.17%
Toshiba 3.57%
ASUS 3.57%
Packard Bell 1.19%
Common models
MEDIONPC MS-7204 3.31%
MEDIONPC MS-7012 2.48%
MSI MS-7592 2.48%
MEDIONPC MS-7502 2.48%
Gigabyte G31M-ES2L 2.48%

About O&O Software GmbH

The company develops and sells software products for data management and security, the first product beingO&O Defrag.
Publisher URL: www.oo-software.com


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