How to Remove Cyber Defender From Your Computer

by Melissa King
Uninstall CyberDefender if it slows your computer down.

Uninstall CyberDefender if it slows your computer down.

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CyberDefender PC Optimizer, developed by USTechSupport, scans your business's computer and cleans out viruses, spyware and other potentially harmful threats. This program continuously runs in the background, so it may cause your system to run slowly or become sluggish. You may find this slowdown frustrating if you're emailing a customer or working on a project for your clients. If you don't want to use CyberDefender anymore, you can uninstall it from your computer via the Programs and Features menu. It's also possible to remove the program manually.

Standard Removal


Press the "Windows" key to access the Start menu.


Click "All Apps" at the bottom of the screen.


Right-click "CyberDefender PC Optimizer." Click "Uninstall" in the toolbar.


Click "CyberDefender PC Optimizer" in the Programs and Features menu.


Click "Uninstall" to remove CyberDefender from your computer.

Manual Removal


Press "Ctrl-Alt-Delete" to open the Task Manager.


Click the "Processes" tab. Right-click each CyberDefender entry, and then select "End Process." Process names beginning with "USTSPCO" are related to CyberDefender.


Download and run an uninstaller program, such as Revo Uninstaller. This tool will uninstall CyberDefender and then scan your computer for files left over from the application. Delete all CyberDefender folders and registry entries the program finds.


Download and run a cleanup program, such as CCleaner or HiJackThis, to find and delete any files the previous program may have missed.


  • Some files related to CyberDefender include AsInvoker.exe, asores.dll and USTSPCODiskOptimizer.exe.
  • Windows has a System Restore feature enabling you to roll back your computer to a previous date and time. You might want to try this method if the standard removal instructions don't work. To run System Restore, type "Recovery" (without quotes) in the Windows search bar. Click "Settings" and "Recovery," then select "Open System Restore." Select a restore point and click "Next" to start the process.


  • The instructions in this article apply to Windows 8 and may differ for other versions.

About the Author

Melissa King began writing in 2001. She spent three years writing for her local newspaper, "The Colt," writing editorials, news stories, product reviews and entertainment pieces. She is also the owner and operator of Howbert Freelance Writing. King holds an Associate of Arts in communications from Tarrant County College.

Photo Credits

  • Comstock Images/Comstock/Getty Images
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