84,488,480 programs installed

Should I remove O&O Defrag Free Edition?

What percent of users and experts removed it?
12% remove it88% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #9,547
United States Rank #17,010
Reach 0.0388%
Lifespan of installation (until removal)
< 16.99 days
501.25 days >
Average installed length: 263.37 days


14.1.431 83.25%
14.1.425 16.75%

O&O Defrag Free Edition

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

O&O Defrag Free Edition merges fragments that were created while Windows was saving files. Merging them increases your computer’s performance considerably. On top of that, the “Optimize” defragmentation method consolidates free space on your hard disks so that new fragmentation can be kept to a minimum. Intelligent zon...  Read more


O&O Defrag Free Edition is a software program developed by O&O Software GmbH. The most common release is 14.1.431, with over 98% of all installations currently using this version. During setup, the program creates a startup registration point in Windows in order to automatically start when any user boots the PC. Upon being installed, the software adds a Windows Service which is designed to run continuously in the background. Manually stopping the service has been seen to cause the program to stop functing properly. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. 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 primary executable is named oodtray.exe. The setup package generally installs about 35 files and is usually about 31.87 MB (33,416,103 bytes). The installed file ooliveupdate.exe is the auto-update component of the program which is designed to check for software updates and notify and apply them when new versions are discovered. Relative to the overall usage of users who have this installed on their PCs, most are running Windows 7 (SP1) and Windows 10. While about 47% of users of O&O Defrag Free Edition come from Germany, it is also popular in the United States and France.

Program detailsProgram details

URL: www.oo-software.com
Installation folder: C:\Program Files\OO Software\Defrag\
Uninstaller: MsiExec.exe /I{C10CAF82-9D36-4D9A-9DC0-C4549F06B519}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 31.87 MB
Language: English (United States)

Program filesFiles installed by O&O Defrag Free Edition

Program executable:oodtray.exe
Name:O&O Defrag Free Edition
O&O Defrag Free Edition TrayIcon (x64)
Path:C:\Program Files\OO Software\Defrag\oodtray.exe
Additional files:
  • oodag.exe - O&O Defrag Free Edition (O&O Defrag Free Edition Agent (x64))
  • oodcnt.exe - O&O Defrag Free Edition Container (x64)
  • oodfree.ocx - O&O Defrag Free Edition OCX (x64)
  • oodfreemmc.dll - O&O Defrag Free Edition MMC plug-in (x64)
  • ooliveupdate.exe - O&O LiveUpdate
  • oodagmg.dll - O&O Defrag (O&O Defrag Agent Message DLL (ENU) (x64))
  • oodagrs.dll - O&O Defrag Agent Resource DLL (ENU) (x64)
  • oodcmd.exe - O&O Defrag CommandLine Utility (x64)
  • oodcmdrs.dll - O&O Defrag Commandline Resources (ENU) (x64)
  • oodfreesur.dll - O&O Defrag SplashUp Resources (ENU) (x64)
  • oodguirs.dll - O&O Defrag Resources (ENU) (x64)
  • oodjobd.dll - O&O Defrag Job Dialog (x64)
  • oodjobdr.dll - O&O Defrag Job Dialog Resource DLL (ENU) (x64)
  • oodpeo.ocx - O&O Defrag OCX (x64)
  • oodpep.dll - O&O Defrag MMC plug-in (x64)
  • oodpesur.dll
  • oodsesur.dll - O&O Defrag SplashUp Resources (FRA) (x64)
  • oodsh.dll - O&O Defrag Shell Extension (x64)
  • oodshrs.dll - O&O Defrag Shell Extension Resource DLL (ENU) (x64)
  • oodsvct.exe - O&O Defrag Service Control (x64)
  • oodtrrs.dll - O&O Defrag TrayIcon Resource DLL (ENU) (x64)
  • oodwrtlic.exe - O&O Defrag License Writer (x64)
  • oodfreerwr.dll - O&O SDK (O&O Registration Wizard Resources (ENU) (x64))
  • oodperwr.dll
  • oodserwr.dll - O&O Registration Wizard Resources (FRA) (x64)
  • oorwiz2.dll - O&O Registration Wizard (x64)
  • oorwiz3.dll
  • oorwiz4.dll
  • oosu.dll - O&O SplashUp (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 '{FCEADD85-FAB0-4EE0-B130-F55BD520A540}' (runs on registration).
Scheduled Task (Boot/Login)
  • oodtray.exe is automatically launched at startup through a scheduled task named OODefragTray.
  • oodag.exe runs as a service named 'OODefragAgent' (OODefragAgent).
Startup File (All Users Run)
  • oodtray.exe is loaded in the all users (HKLM) registry as a startup file name 'OODefragTray' which loads as C:\Program Files\OO Software\Defrag\oodtray.exe.

Program resource utilizationResource utilization averages

Memory:21.47 MB
21.09 MB average
Total CPU:0.0030604853%
0.031193% average
Kernel CPU:0.00128688%
0.016088% average
User CPU:0.00177360%
0.015104% average
70 average
Memory:5.74 MB
Total CPU:0.0017166189%
Kernel CPU:0.00055845%
User CPU:0.00115817%

How do I remove O&O Defrag Free Edition?

You can uninstall O&O Defrag Free 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 Free 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 Free Edition.

Automatically starts? Yes
(Found in the run registry)
Uninstall it 12%
Keep it 88%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 66.93%
Windows 10 18.69%
Windows XP 7.71%
Windows Vista 6.67%
Which OS releases does it run on?
Windows 7 Home Premium 37.57%
Windows 7 Professional 15.61%
Windows 7 Ultimate 12.04%
Microsoft Windows XP 7.28%
Windows Vista Home Premiu... 5.42%
Windows 8.1 3.84%

Distribution by countryGeography

46.51% of installs come from Germany
Which countries install it?
  Germany 46.51%
  United States 17.79%
  France 7.50%
  Belgium 5.08%
  United Kingdom 2.80%
  Austria 2.67%
  Poland 1.40%
  Italy 1.40%
  Brazil 1.27%
  Netherlands 1.27%
  Taiwan 1.02%
  Canada 1.02%
  Switzerland 0.89%
  Russia 0.89%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Acer 22.36%
Hewlett-Packard 17.09%
Dell 12.06%
ASUS 10.80%
Medion 10.55%
Toshiba 3.77%
Lenovo 2.76%
American Megatrends 2.26%
Intel 2.01%
Samsung 1.76%
Common models
MEDIONPC MS-7502 3.62%
ASUS All Series 2.71%
HP Pavilion dv6 Notebook ... 2.26%
HP Pavilion g6 Notebook P... 2.26%
MSI MS-7758 2.26%
Acer Aspire V3-771 1.81%

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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