Cosmos System Care Unwanted Application
Written by Tomas Meskauskas on (updated)
What is Cosmos System Care?
Cosmos System Care is another dubious application presented as a high-quality system optimization/cleaning tool.
Its appearance suggests that Cosmos System Care is a legitimate and useful application, however, it is likely to infiltrate systems without permission, since developers proliferate it using a deceptive marketing method called "bundling". Therefore, Cosmos System Care is categorized as a potentially unwanted application (PUA).
This application supposedly allows users to scan the system and clean various junk files, fix registry entries, and so on. As a rule, Cosmos System Care's free version is only capable of scanning the system, but it is unable to fix other issues located by the scan.
Therefore, uses are encouraged to pay for the 'full version'. It is currently unknown whether the Cosmos System Care application is trustworthy. Research shows that many "bundled" system optimization tools are fake. They generate misleading scan results to trick users into purchasing full versions of software that give no real value.
Cosmos System Care is probably one of these dubious applications. Therefore, we recommend that you consider uninstalling it. "Bundling" is often used to distribute several unwanted applications (in most cases, adware and browser hijackers) at once.
Therefore, Cosmos System Care may not be the only PUA that has infiltrated your system. These rogue applications typically generate intrusive advertisements, cause unwanted redirects, and record personal information. Therefore, uninstall Cosmos System Care and also remove other dubious applications and browser extensions.
| Name | Cosmos System Care potentially unwanted application |
| Threat Type | PUP (potentially unwanted program), PUA (potentially unwanted application) |
| Symptoms | A program that you don't recall installing suddenly appeared on your computer. New application is performing computer scans and displays warning messages about found issues. Asks for payment in order to eliminate the supposedly found errors. |
| Distribution methods | Deceptive pop-up ads, free software installers (bundling), fake flash player installers. |
| Damage | Monetary loss (unnecessary purchase of fake software), unwanted warning pop-ups, slow computer performance. |
| Malware Removal (Windows) | To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. |
The Internet is full of potentially unwanted applications that share many similarities. Most offer 'useful functionality' just to trick users to install. In fact, few provide the functions promised. In most cases, potentially unwanted applications have only one purpose: to generate revenue for the developers.
Rather than giving any real value, they cause redirects, deliver ads, and gather information, thereby posing a direct threat to your privacy and Internet browsing safety.
How did potentially unwanted applications install on my computer?
Cosmos System Care is distributed via its official website and "bundling", and thus it is likely to infiltrate systems without permission. "Bundling" is essentially stealth installation of third party software with regular (mostly free) apps.
Developers conceal "bundled" applications within "Custom/Advanced" settings (or other sections) of the download/installation processes. Furthermore, many users often rush these procedures and skip steps. This behavior can lead to unwanted installation of third party applications such as Cosmos System Care.
How to avoid installation of potentially unwanted applications?
Select "Custom/Advanced" settings and carefully analyze each window of the download/installation dialogs. Decline offers to download/install third party applications and opt-out of those already included. You are also strongly advised to avoid using third party downloaders/installers and download your programs from official sources only (via direct download links).
Developers monetize third party download/installation tools by "bundling" third party applications, and thus these tools should not be used. PUAs are often distributed using intrusive advertisements that redirect to malicious websites and run scripts designed to download/install unwanted apps.
Most of these ads seem legitimate, since developers invest many resources into their design. In fact, they redirect to dubious websites (gambling, adult dating, pornography, etc.).
As mentioned, most intrusive ads are delivered by adware-type apps. Therefore, if you encounter suspicious redirects, remove dubious applications/browser plug-ins immediately. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.
Cosmos System Care installation setup:
Instant automatic malware removal:
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Quick menu:
- What is Cosmos System Care?
- STEP 1. Uninstall deceptive applications using Control Panel.
- STEP 2. Remove malicious plug-ins from Internet Explorer.
- STEP 3. Remove rogue extensions from Google Chrome.
- STEP 4. Remove potentially unwanted plug-ins from Mozilla Firefox.
- STEP 5. Remove rogue extensions from Safari.
- STEP 6. Remove rogue plug-ins from Microsoft Edge.
Removal of potentially unwanted applications:
Windows 11 users:
Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.
Windows 10 users:
Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.
Windows 7 users:
Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.
macOS (OSX) users:
Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.
In the uninstall programs window, look for "Cosmos System Care" and other suspicious/recently-installed applications, select these entries and click "Uninstall" or "Remove".
After uninstalling the potentially unwanted application, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove rogue extensions from Internet browsers:
At time of research, Cosmos System Care did not install any unwanted browser extensions, however some unwanted applications can be installed together with adware and browser hijackers. If you see unwanted ads or encounter unwanted redirects when browsing the Internet, continue with the removal guide below.
Video showing how to remove potentially unwanted browser add-ons:
Remove malicious add-ons from Internet Explorer:
Click the "gear" icon 
(at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently-installed suspicious browser extensions, select these entries and click "Remove".
Optional method:
If you continue to have problems with removal of the cosmos system care potentially unwanted application, reset your Internet Explorer settings to default.
Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.
Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.
Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.
In the opened window, select the Advanced tab.
Click the Reset button.
Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon 
(at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate all recently-installed suspicious browser add-ons and remove them.
Optional method:
If you continue to have problems with removal of the cosmos system care potentially unwanted application, reset your Google Chrome browser settings. Click the Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plug-ins from Mozilla Firefox:
Click the Firefox menu 
(at the top right corner of the main window), select "Add-ons". Click on "Extensions", in the opened window, remove all recently-installed suspicious browser plug-ins.
Optional method:
Computer users who have problems with cosmos system care potentially unwanted application removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active, click Safari menu, and select Preferences....
In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.
Optional method:
Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge menu icon 
(at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.
Optional method:
If you continue to have problems with removal of the cosmos system care potentially unwanted application, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Summary:
Commonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.
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