84,488,480 programs installed

Should I remove UltimateDefrag?

What percent of users and experts removed it?
4% remove it96% keep it
Overall Sentiment
What do people think about it?
Be the first to rate (click star to rate)
How common is it?
Global Rank #12,636
United States Rank #12,238
Reach 0.0250%
Lifespan of installation (until removal)
< 7.81 days
230.53 days >
Average installed length: 121.13 days


VersionDistribution 1.63% 1.42% 0.41% 71.95% 24.59%



UltimateDefrag is a program developed by DiskTrix Inc. The most used version is, 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 main program executable is UltimateDefrag.exe. The software installer includes 7 files and is usually about 52.86 MB (55,425,660 bytes). In comparison to the total number of users, most PCs are running the OS Windows 7 (SP1) as well as Windows 10. While about 44% of users of UltimateDefrag come from the United States, it is also popular in United Kingdom and Canada.

Program detailsProgram details

URL: www.disktrix.com
Installation folder: C:\Program Files\Disktrix\UltimateDefrag4
Uninstaller: "C:\Program Files\Disktrix\UltimateDefrag4\uninstall.exe"
Estimated size: 52.86 MB

Program filesFiles installed by UltimateDefrag

Program executable:UltimateDefrag.exe
Name:UltimateDefrag 4
Path:C:\Program Files\Disktrix\UltimateDefrag4\UltimateDefrag.exe
Additional files:
  • uninstall.exe - UltimateDefrag (UltimateDefrag Installation)
  • UltimateDefrag.exe - UltimateDefrag 4
  • UDSh.dll - UltimateDefrag 5.1 Shell Extension
  • UDShESN.dll
  • UltimateDefragESN.dll - UltimateDefrag 5.1

Program behaviorsBehaviors exhibited

Context Menu Handler
  • UDSh.dll added as a content menu within Windows Explorer with the class {C3B40C44-C53E-4B02-8944-4513C615F2A2}.
Scheduled Task
  • UltimateDefrag.exe is scheduled as a task named 'Defrag_AutoAnalyzeDefrag_AutoAnalyzeDefrag_AutoAnalyzeDefrag_AutoAnalyze' (runs daily at 5:00 PM).

How do I remove UltimateDefrag?

You can uninstall UltimateDefrag 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 UltimateDefrag, 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 UltimateDefrag.

Win 7 (SP1) 55%
Win Vista 0%
Uninstall it 4%
Keep it 96%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 58.94%
Windows 10 29.07%
Windows XP 10.16%
Windows Vista 1.63%
Windows Server 2003 0.20%
Which OS releases does it run on?
Windows 7 Ultimate 23.42%
Windows 7 Home Premium 20.77%
Windows 7 Professional 11.20%
Microsoft Windows XP 10.39%
Windows 10 Home 6.72%
Windows 10 Pro 6.11%

Distribution by countryGeography

44.10% of installs come from the United States
Which countries install it?
  United States 44.10%
  United Kingdom 6.94%
  Canada 5.03%
  France 3.47%
  Australia 3.30%
  Italy 3.30%
  Germany 2.95%
  Brazil 2.78%
  India 1.74%
  Japan 1.74%
  Netherlands 1.74%
  Poland 1.74%
  RS 1.04%
  Russia 1.04%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 24.45%
Dell 18.78%
Acer 17.90%
ASUS 13.54%
Intel 4.37%
Lenovo 3.49%
American Megatrends 1.75%
MSI 1.75%
Samsung 1.75%
Toshiba 1.31%
Common models
HP Pavilion g6 Notebook P... 3.70%
ASUS All Series 2.96%
Acer Aspire 5750G 2.22%
Dell Studio 1747 2.22%
ASUSTeK K60IJ 2.22%
ECS G31T-M 2.22%


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