What is One System Care?

One System Care is a free application that is not malicious but still may cause troubles with the system. The features of the program and the real abilities do differ, since the official description suggests One System Care being an optimizing tool speeding up the machine. In fact, the user who has downloaded this program gets a fake application created for squeezing money from people. One System Care plays on the people’s bother with PC’s health and after the installation shows made up notifications about numerous threats which can be removed in the purchased version of the program. Best decision you can make in this situation is to remove One System Care.

one system care

Here is how One System Care detected by various antiviruses on VirusTotal:

Antivirus Detection
Avast Win32:Adware-gen [Adw]
AVG Optimizer.BP
BitDefender Adware.Agent.QWK
ESET-NOD32 a variant of Win32/OptimizerEliteMax.E potentially unwanted
Emsisoft Adware.Agent.QWK (B)
DrWeb Program.Unwanted.1510
Malwarebytes PUP.Optional.OneSystemCare

How One System Care gets on your PC?

One System Care is distributed very similar to other fake programs. As a rule, such programs have an official website and a promotional campaign. Nevertheless, they can be spread via unfair taсtics like enclosing it to spam messages or masquerading the links to downloads to the fake update notifications. Besides, it is common to bundle One System Care with other software. In this case, all you need to prevent it from getting into the system is to opt out from it in the Advanced or Custom mode.

How to remove One System Care from your computer?

To uninstall One System Care remove it from Control Panel, then delete all files and regkeys.

In our view, there are 3 products that potentially have One System Care in their database. You can try to use them for removing One System Care.

Recommended Solution:

Norton is a powerful removal tool. It can remove all instances of newest viruses, similar to One System Care – files, folders, registry keys.


Download Norton*Trial version of Norton provides detection of computer viruses for FREE. To remove malware, you have to purchase the full version of Norton.

Alternative Solution:

Norton Antivirus – detects files, registry values and folders of viruses that show the same behavior as One System Care.


Download Norton

You can try both of these products to remove One System Care

Or uninstall One System Care manually.

Step 1: Remove One System Care from Control Panel

Windows XP:

  1. Click Start.
  2. Control Panel.
  3. Then click Add or Remove Programs.
  4. Find One System Care.
  5. Click Uninstall.

Learn more about uninstallation of programs in Windows XP.

Windows 7/Windows Vista:

  1. Click Start.
  2. Then Control Panel.
  3. Click Uninstall a Program.
  4. Find One System Care and click Uninstall.

Learn more about uninstallation of programs in Windows 7.

Windows 8/Windows 8.1:

  1. Open the Menu.
  2. Click Search.
  3. After that click Apps.
  4. Then Control Panel.
  5. Then as in Windows 7, click Uninstall a Program under Programs.
  6. Find One System Care, select it and click Uninstall.

Learn more about uninstallation of programs in Windows 8 (8.1).

Windows 10:

  1. Click on the Start button (or press the Windows key) to open the Start menu, click on the Settings at the top.
  2. Click on App & features on the left menu.
  3. On the right side, locate One System Care and click it, then click on the Uninstall button.
  4. Click on Uninstall to confirm.

Learn more about uninstallation of programs in Windows 10

Note: If you can’t find required program, sort programs by date in Control panel and search for last installed programs.

One System Care won’t uninstall

There are certain cases, when users cannot uninstall One System Care normally, using standard Windows features in Control Panel. When users click Uninstall button they see message: “You do not have sufficient access to uninstall One System Care. Please, contact your system administrator.” This happens because some process of One System Care prevent attempts to uninstall it. In order to uninstall it, use Safe Mode:

For Windows XP, Vista, 7

  1. Turn off your computer;
  2. Turn it on and immediately start typing F8 button;
  3. This will open Advanced Boot Options menu;
  4. Choose Safe Mode with arrow buttons;
  5. In Safe Mode go to Control Panel and Uninstall a program and remove “One System Care”.

For Windows 8/8.1 and 10

  1. Press the Win+R keys, type msconfig in box and press Enter;
  2. Switch to Boot tab, and click on Safe Boot check box;
  3. Choose the type of Safe Mode: Minimal or Network;
  4. Click OK and restart your PC;
  5. In Safe Mode go to Control Panel and Uninstall a program and remove “One System Care”.

Step 2: Remove following files and folders of One System Care:

Remove following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\One System CareStartUp
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\One System CarePeriod
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\One System Care Monitor
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures, value: One System CareStartUp.job.fp
HKEY_LOCAL_MACHINE\Software\One System Care
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\One System Care Run Delay
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\One System Care Task

Remove following files:


Remove following folders

C:\Program Files\OneSystemCare\

Information provided by: Alexey Abalmasov

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