84,488,480 programs installed

Should I remove O&O Defrag Workstation?

What percent of users and experts removed it?
5% remove it95% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #47,574
Reach 0.0016%


20.5.603 3.13%
19.5.222 3.13%
18.10.101 3.13%
18.9.60 6.25%
18.0.39 28.13%
17.0.504 12.50%
15.0.107 15.63%
14.0.205 6.25%
14.0.177 12.50%
12.0.197 6.25%
11.5.4065 3.13%

O&O Defrag Workstation

What is O&O Defrag Workstation?  (from O&O Software GmbH)

With O&O Defrag Workstation, several drives can be defragmented simultaneously. In addition, the algorithms have been substantially accelerated, reducing the time required for a defragmentation by up to 40%. By using O&O Defrag, files can be read and written much more quickly. What at first seems to be lost performance...  Read more


O&O Defrag Workstation is a program developed by O&O Software GmbH. The most used version is 18.0.39, with over 98% of all installations currently using this version. Upon installation and setup, it defines an auto-start registry entry which makes this program run on each Windows boot for all user logins. 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). The software is designed to connect to the Internet and adds a Windows Firewall exception in order to do so without being interfered with. 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 32 files and is usually about 48.63 MB (50,995,424 bytes). ooliveupdate.exe is the automatic update component of the software designed to download and apply new updates should new versions be released. In comparison to the total number of users, most PCs are running the OS Windows 7 (SP1) as well as Windows 10. While about 41% of users of O&O Defrag Workstation come from the United States, it is also popular in Germany and Switzerland.

Program detailsProgram details

URL: www.oo-software.com/en/download/current/oodefragwks
Help link: www.oo-software.com
Installation folder: C:\Program Files\OO Software\Defrag\
Uninstaller: MsiExec.exe /I{2E15A79D-F04D-4138-B9FE-A974847F817C}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 48.63 MB
Language: English (United States)

Program filesFiles installed by O&O Defrag Workstation

  • ooliveupdate.exe - O&O LiveUpdate
  • oodag.exe - O&O Defrag (O&O Defrag Agent (x64))
  • oodagmg.dll - O&O Defrag Agent Message DLL (ENU) (x64)
  • oodagrs.dll - O&O Defrag Agent Resource DLL (ENU) (Win32)
  • oodcmd.exe - O&O Defrag CommandLine Utility (x64)
  • oodcmdrs.dll - O&O Defrag Commandline Resources (ENU) (x64)
  • oodcnt.exe - O&O Defrag Container (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)
  • oodsh.dll - O&O Defrag Shell Extension (x64)
  • oodshrs.dll - O&O Defrag Shell Extension Resource DLL (ENU) (Win32)
  • oodsvct.exe - O&O Defrag Service Control (x64)
  • oodtray.exe - O&O Defrag TrayIcon (x64)
  • oodtrrs.dll - O&O Defrag TrayIcon Resource DLL (ENU) (x64)
  • oodwesur.dll - O&O Defrag SplashUp Resources (ENU) (x64)
  • oodwetpr.dll - O&O Defrag Tip Resources (ENU) (x64)
  • oodwiz.dll - O&O Defrag Wizard (x64)
  • oodwizrs.dll - O&O Defrag Wizard Resource DLL (ENU) (x64)
  • oodwrtlic.exe - O&O Defrag License Writer (x64)
  • oodwerwr.dll - O&O SDK (O&O Registration Wizard Resources (ENU) (x64))
  • oorwiz2.dll - O&O Registration Wizard (x64)
  • oorwiz3.dll - O&O Registration Wizard (Win32)
  • oorwiz4.dll
  • 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}.
2 Scheduled Tasks
  • oodtray.exe is scheduled as a task named 'OODefragTray'.
  • oodcnt.exe is scheduled as a task with the class '{B1F6E240-B438-4AE5-BB0D-76F38BCA9216}' (runs on registration).
Scheduled Task (Boot/Login)
  • oodtray.exe is automatically launched at startup through a scheduled task named 1.
  • oodag.exe runs as a service named 'O&O Defrag' (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.
Windows Firewall Allowed Program
  • oodag.exe is added as a firewall exception for 'C:\Program Files\OO Software\Defrag\oodag.exe'.

Program resource utilizationResource utilization averages

Memory:9.32 MB
21.09 MB average
Total CPU:0.0011978694%
0.031193% average
Kernel CPU:0.00085611%
0.016088% average
User CPU:0.00034176%
0.015104% average
Memory:6.15 MB
Total CPU:0.0010607102%
Kernel CPU:0.00027813%
User CPU:0.00078258%

How do I remove O&O Defrag Workstation?

You can uninstall O&O Defrag Workstation 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 Workstation, 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 Workstation.

Win 7 (SP1) 50%
Win XP 3%
Automatically starts? Yes
(Found in the run registry)
Uninstall it 5%
Keep it 95%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 53.13%
Windows 10 40.63%
Windows XP 6.25%
Which OS releases does it run on?
Windows 7 Ultimate 31.25%
Windows 7 Home Premium 12.50%
Windows 8.1 12.50%
Windows 10 Pro 9.38%
Windows 8 Enterprise 9.38%
Windows 7 Professional 6.25%

Distribution by countryGeography

41.03% of installs come from the United States
Which countries install it?
  United States 41.03%
  Germany 15.38%
  Switzerland 7.69%
  RS 5.13%
  Hungary 5.13%
  Italy 5.13%
  Australia 2.56%
  Russia 2.56%
  Belgium 2.56%
  France 2.56%
  Netherlands 2.56%
  Argentina 2.56%
  Iran 2.56%
  Thailand 2.56%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 25.00%
Dell 14.29%
Acer 14.29%
Lenovo 14.29%
ASUS 10.71%
Sony 7.14%
Medion 3.57%
Alienware 3.57%
Common models
LENOVO 9349Y17 12.50%
Dell XPS 8700 8.33%
HP Pavilion dv6 Notebook ... 4.17%
Hewlett-Packard 500-311nf 4.17%
TAROX Business PC Core i7... 4.17%
Sony VPCF215FX 4.17%

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


user comment
No one has commented yet. Help others learn more about this software, share your comments.