84,488,480 programs installed

Should I remove STOPzilla Optimizer?

What percent of users and experts removed it?
48% remove it52% keep it
Overall Sentiment
What do people think about it?
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How common is it?
Global Rank #38,982
United States Rank #28,519
Reach 0.0027%

Other programs by iS3

STOPzilla Optimizer

Remove STOPzilla Optimizer
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What is STOPzilla Optimizer?

This is a PC optimization program that is supposed to increase the speed of computer. The trial version will perform a scan and identify issues while the user will need to unlock the software for a yearly auto-renewing subscription charge.

About  (from iS3)

Registry problems can slow your PC to a screeching halt. With one click, STOPzilla Optimizer will scan your registry for fragmented files and fix them. STOPzilla Optimizer allows advanced users who want more configuration control to manually make changes to the registry. With one click you can fix invalid application...  Read more


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 main program executable is highestavailable.exe. The software installer includes 41 files and is usually about 34.39 MB (36,056,045 bytes).

Program detailsProgram details

URL: www.is3.com
Installation folder: C:\Program Files\STOPzilla Optimizer\
Uninstaller: "C:\Program Files\STOPzilla Optimizer\unins000.exe"
Estimated size: 34.39 MB

Program filesFiles installed by STOPzilla Optimizer

Program executable:highestavailable.exe
Name:STOPzilla Optimizer
Path:C:\Program Files\stopzilla optimizer\highestavailable.exe
Additional files:
  • AsInvoker.exe (by iS3,, (www.iS3.com)) - STOPzilla Optimizer
  • KillstopzillaProcesses.exe (by iS3,, (www.iS3.com))
  • RequireAdministrator.exe
  • stopzilla.dll
  • stopzillacfu.exe
  • stopzillaDefragServiceManager.exe
  • stopzilladefragsrv.exe
  • stopzilladefragsrv64.exe
  • stopzillado.exe
  • stopzilladu.exe
  • stopzillapp.exe
  • stopzillarc.exe
  • stopzillaro.exe
  • stopzillasc.exe
  • stopzillascheduler.exe
  • stopzillasys.dll
  • stopzillasysbackres.exe
  • unrar.dll (by Alexander Roshal) - RAR decompression library
  • Downloader.dll - MAXPC
  • asohtm.dll
  • Network.dll

Program behaviorsBehaviors exhibited

4 Scheduled Tasks
  • stopzillasc.exe is scheduled as a task named 'stopzilla-SystemCleaner' (runs daily at 7:28 PM).
  • stopzillarc.exe is scheduled as a task named 'STOPzilla Optimizer' (runs daily at 7:28 PM).
  • stopzillapp.exe is scheduled as a task named 'stopzilla-PrivacyProtector' (runs daily at 7:28 PM).
  • stopzillado.exe is scheduled as a task named 'stopzilla-DiskOptimizer' (runs daily at 7:28 PM).
2 Services
  • stopzilladefragsrv64.exe runs as a service named 'STOPZILLADO_SRV' (STOPZILLADO_SRV).
  • stopzilladefragsrv.exe runs as a service named 'STOPZILLADO_SRV' (STOPZILLADO_SRV).

How do I remove STOPzilla Optimizer?

Quickly and completely remove STOPzilla Optimizer from your computer by downloading Reason's ‘Should I Remove It?’ (click the button below).
Or, you can uninstall STOPzilla Optimizer 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: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program STOPzilla Optimizer, click it, and then do one of the following:
    • Windows Vista/7/8: 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 STOPzilla Optimizer.

Win 10 44%
Win XP 2%
Windows Service? Yes
(Installs a service)
Uninstall it 48%
Keep it 52%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 10 44.23%
Windows 7 44.23%
Windows Vista 9.62%
Windows XP 1.92%
Which OS releases does it run on?
Windows 7 Home Premium 30.77%
Windows 10 Home 15.38%
Windows 8.1 13.46%
Windows 7 Professional 9.62%
Windows 10 Pro 7.69%
Windows Vista Home Premiu... 7.69%

Distribution by countryGeography

78.13% of installs come from the United States
Which countries install it?
  United States 78.13%
  Australia 4.69%
  United Kingdom 4.69%
  Malaysia 3.13%
  Netherlands 3.13%
  Sweden 3.13%
  Belgium 1.56%
  Brazil 1.56%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 22.45%
Dell 20.41%
Gateway 14.29%
Toshiba 14.29%
Acer 12.24%
Intel 4.08%
ASUS 4.08%
Alienware 2.04%
Common models
Gateway ML6732 ... 14.89%
TOSHIBA Satellite C50D-A 4.26%
Gigabyte X58A-UD9 4.26%
Toshiba LX830 2.13%
TOSHIBA Satellite L300D 2.13%


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