Full System Care ads: what it is and how to remove it
Full System Care is yet another fake system optimizer that shows bogus scan results in order to make users buy its full version. The app is developed for all versions of Windows operating systems and can be downloaded from the official website, although most users find it installed after the installation of freeware from third-party sites.
Facts checked October 7, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.
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Full System Care ads: summary
| Name | Full System Care |
|---|---|
| Type | Potentially unwanted program, scareware |
| Installation | Users might get tricked into installing the app via software bundles or download it intentionally for its official website |
| Operation | The app relies on inexperienced users and shows them false-positives in order to make them believe that their computers are in danger. After showing fake scan results, users are prompted to buy a full version of the program |
| Claims | Developers of the app claim that it can |
| AV detection | 15 engines recognize the installer fscsetup.exe as malicious or potentially unwanted: Program.Unwanted.4557 Gen:Variant.Application.Deceptor.Slv.1 PUP.Optional.PCVARK A Variant Of Win32/GT32SupportGeeks.U Pot HEUR/QVM06.1.5A95.Malware.Gen, etc.; no Microsoft detection name is known for this name |
| Removal | Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged. Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free. |
Show 8 more facts
| Termination | To uninstall PUP, you can rely on our manual removal guide below or perform a full system scan with anti-malware software |
|---|---|
| Distribution | Not recorded in the old report |
| Damage | Not recorded in the old report |
| Symptoms | An unknown program in Installed apps |
| Evidence | 4 write-ups by security sites; details still limited |
| Program | Full System Care |
| First seen | 20 November 2019 |
| Facts checked | 7 October 2026 |
Is Full System Care ads dangerous?
From our report of Nov 2019 · not reviewed since
Software bundles can make you install optional programs without disclosing it to you
Initially, there is nothing wrong with offering users additional programs during the installation of the desired application.
However, many adware and other potentially unwanted program developers do it deceptively - they create installers that deliberately seek to hide additional programs so that more users would install them unintentionally. Software bundling also works because users are not so attentive when it comes to software installation, and they are also often ready to download apps from sites that are less than secure.
To avoid unintentional installation of adware and other PUPs, security experts recommend the following precautionary measures:
- If possible, download apps only from official sources, such as Google web store or Amazon (note: even official stores sometimes bypass malicious apps);
- When it comes to third-party websites, be aware that most of the installers will bundle software;
- During the installation of the app, make sure you opt for Advanced/Custom installation settings instead of Recommended/Quick ones;
- Watch out of pre-ticked boxes, misleading offers, misplaced buttons, fine print text, and similar tricks used by the developers;
- Install anti-malware software which also detects potentially unwanted programs.
From our report of Nov 2019 · not reviewed since
More from our earlier report on Full System Care
- If you have been infected with adware or malware recently or you have troubles with system crashes, you can employ to repair your system without being exposed to hundreds of false-positives - it will repair your machine where it needs repairing
From our report of Nov 2019 · not reviewed since
Full System Care is a potentially unwanted that claims to fix Windows systems but instead might actually harm them
Full System Care is yet another fake system optimizer that shows bogus scan results in order to make users buy its full version.
The app is developed for all versions of Windows operating systems and can be downloaded from the official website, although most users find it installed after the installation of freeware from third-party sites. It happens because Full System Care is often bundled with other programs and often slips into computers unnoticed.
Once installed, Full System Care performs a full system scan and show users multiple false-positives that allegedly indicate problems with startup items, malware infections, performance-related issues, and so on. To fix these seemingly dangerous issues, users are directed to the payment page, where they are asked to buy a full license for Full System Care.
The functionality of Full System Care is questionable, as there is no guarantee that the app will speed up or improve the performance of the machine. If anything, it might delete Windows registry entries that are necessary for certain programs or used by the system, and corrupt normal operation of the device.
Full System Care belongs to the scareware category - it tries to intimidate users and make them believe that their machines are in trouble, regardless of its real condition. The truth is, the app picks up various files or entries from the operating system that hardly (or do not) impact or hinder its operation. Nevertheless, Full System Care shows these "issues" in a manner that inexperienced users might find believable.
Once users are presented with various bogus issues and presented in an intimidating manner and click on the "fix" button, they will be redirected to the payment page, where they will be asked to purchase a full version of the app.
Those who will decline and keep it on the system, however, will continuously be experiencing pop-ups that ask users to buy the software. This is another reason to remove Full System Care from the machine.
Full System Care is one of many scareware and fake system optimizing programs that has been bloating users computers in many years now. In reality, most of these fake apps are developed by a few PUP developers that keep re-branding their apps in order to avoid AV detection.
In other words, Full System Care is just a copy of such apps like Advance-System-Care, Win PC Repair, mBytes Clean Pro, Universal PC Care, and many others, and are likely being distributed by the same developer.
All of the registry cleaners that claim to speed up the computer by deleting some of the registry entries are bogus, as there is no way that these tiny files would impact the operation speed of a Windows computer. The only time that deletion of certain registry entries would be helpful is when they are corrupted or set up by malware.
In such a case, however, we do not recommend using Full System Care or similar useless software. It is indeed true that inexperienced users should not go to Registry editor and tamper with files there, as incorrect modification might result in system malfunctions. Thus, if there are entries that were left by malware, let eliminate them automatically.
How to remove Full System Care ads
How to remove the Full System Care extension
Do the browser steps in every browser and profile on the PC, then check Windows for the program that installed the extension.
Step 1: Remove extensions you did not add
In Chrome open
chrome://extensions, in Edgeedge://extensions, and in Firefox the menu > Extensions and themes.Remove every extension you do not remember adding, especially search, new tab, coupon, PDF, weather or video downloader add-ons. Check every browser and every profile, because each keeps its own list.
If an extension has no Remove button or comes back, a browser policy holds it (see "Managed by your organization" in the procedure below). The pages are the same on Windows 11 and Windows 10.
Chrome on Windows 11: More > Extensions > Manage extensions. Full procedure with screenshots: Remove a browser extension
Step 2: Uninstall Full System Care
Full System Care is removed like any other program, from the list of installed apps. In Windows 11 that is Settings > Apps > Installed apps, in Windows 10 Settings > Apps > Apps & features, and in both you can also use Control Panel > Programs and Features.
Select Full System Care, click Uninstall and follow the uninstaller to the end. Then look at the entries just above and below it when the list is sorted by date: bundled programs install at the same minute.
Full procedure with screenshots: Uninstall a program or app in Windows On uGetFix
Step 3: Reset the browser
A reset removes what the steps above could miss:
- changed start pages
- site permissions
- hidden settings
In Chrome open Settings > Reset settings > Restore settings to their original defaults; in Edge Settings > Reset settings; in Firefox Help > More troubleshooting information > Refresh Firefox.
Tip: Bookmarks and saved passwords stay, while extensions are turned off and the search engine and start page return to the defaults.
Reset every browser on the PC, including Edge, which Windows 11 and Windows 10 always have.
Chrome on Windows 11: Settings > Reset settings. Full procedure with screenshots: Reset a browser and fix a hijacked search engine
Step 4: Scan the PC, then run the offline scan
A scan finds the parts of Full System Care that the manual steps cannot see. In Windows Security > Virus & threat protection > Scan options, start a Full scan and quarantine what it reports.
Follow it with Microsoft Defender Antivirus (offline scan) > Scan now, which restarts the PC and checks the disk while Windows and the malware are not running.
It takes about 15 minutes and works the same in Windows 11 and Windows 10. If either scan finds something, run the full scan again after removal until it comes back clean.
Windows 11: Windows Security > Virus & threat protection > Scan options. Full procedure with screenshots: Run a Microsoft Defender Offline scan
Instructions for each browser and system
The detailed steps for every browser and system this guide covers. Open the one you use.
Uninstall from Windows
To remove Full System Care from Windows OS, you should check the installed program list via the Control Panel:
Uninstall from Windows 10/8:
- Type Control Panel into the Windows search box and open the result.
- Under Programs, select Uninstall a program.
Uninstall from Windows 7/XP:
- Click on Windows Start > Control Panel (Windows XP users should click on Add/Remove Programs).
- In Control Panel, select Programs > Uninstall a program.
Remove the unwanted program:
- In the Programs and Features window, look for any recently installed suspicious entries, select them, and click Uninstall.
- If User Account Control appears, click Yes to confirm, then complete the removal.
Access your website securely from any location
When you work on the domain, site, blog, or different project that requires constant management, content creation, or coding, you may need to connect to the server and content management service more often. The best solution for creating a tighter network could be a dedicated/fixed IP address.
If you make your IP address static and set to your device, you can connect to the CMS from any location and do not create any additional issues for the server or network manager that needs to monitor connections and activities. VPN software providers like can help you with such settings and offer the option to control the online reputation and manage projects easily from any part of the world.
Recover files after data-affecting malware attacks
While much of the data can be accidentally deleted due to various reasons, malware is one of the main culprits that can cause loss of pictures, documents, videos, and other important files.
More serious malware infections lead to significant data loss when your documents, system files, and images get encrypted. In particular, ransomware is is a type of malware that focuses on such functions, so your files become useless without an ability to access them.
Even though there is little to no possibility to recover after file-locking threats, some applications have features for data recovery in the system. In some cases, can also help to recover at least some portion of your data after data-locking virus infection or general cyber infection.
From our report of Nov 2019 · not reviewed since
Get rid of Full System Care virus and employ reputable tools for system maintenance operations
System optimizers generally have an almost negative reputation when it comes to the infosec community - and for a reason.
Most of the system optimizers are designed to present fake results to extort money from users who are not that experiencing with computers and are looking for solutions for their slow workstations. However, Full System Care is not what they should be putting their trust and money into, as there are many useful tools that can actually help solve computer problems instead of trying to trick users.
Thus, remove Full System Care virus from your machine and opt for secure applications instead. You can get rid of the unwanted program either manually or automatically - both methods can be just as effective, although the latter will also allow you to check the system for other potential infections and remove them at once. Manual Full System Care removal can be performed by following our detailed guide below.
Questions about Full System Care ads
Is Full System Care a virus?
Most programs that appear the way Full System Care did are not viruses in the strict sense. They are potentially unwanted programs:
- real software that arrives bundled with other downloads and then shows offers
- changes browser settings
- starts with Windows
Some are harmless, some are annoying and a few carry adware. What makes it worth removing is that you did not choose it.
Uninstall it from Installed apps and check the startup list and the browsers for anything added the same day. If it refuses to uninstall or returns after a restart, treat it as more serious and run a Microsoft Defender offline scan.
Full System Care came back after I uninstalled it. Why?
Something else is reinstalling it. Common causes are a second program from the same publisher, a scheduled task that downloads it again, or a browser extension that keeps prompting for it. Sort Installed apps by install date and uninstall each entry from the same day that you did not choose.
Then open Task Scheduler and look in the Task Scheduler Library for tasks with updater-style names that you do not recognise. Check Startup apps in Task Manager too. If Full System Care still returns, start Windows in Safe Mode, uninstall it there and run a Microsoft Defender offline scan, which looks for loaders that ordinary scans can miss.
Does adware steal passwords?
Ordinary adware is built to show ads, not to steal logins, and most of it never touches saved passwords. The line is blurry, though. Extensions that can read every page could capture what you type, and adware ads sometimes lead to phishing pages that ask for passwords directly.
If you entered credentials on a page reached through an ad, change that password from a clean device and turn on two-step verification. Otherwise, removing adware extension and clearing cookies is usually enough.
I clicked on one of the ads. Am I infected?
Probably not. Clicking an ad usually only opens a page, and a page cannot install programs on an up-to-date Windows PC without your help.
You are at risk only if you then downloaded and ran a file, allowed notifications, entered card or login details, or called a phone number shown on the page. Delete any download and run a full and offline scan.
Change passwords you typed, from a clean device. Call your bank if you gave card details. If you called a number or allowed remote access, see the next question.
Why didn't my antivirus catch Full System Care?
Many security products do not block adware or notification sites by default, because users often agreed to them, even through a misleading prompt. Notification spam installs nothing at all, so there is no file to detect.
In Windows 11 you can make Microsoft Defender block potentially unwanted apps: open Windows Security > App & browser control > Reputation-based protection settings and turn on Potentially unwanted app blocking. If notifications caused the pop-ups, no scanner will report them; the fix is in the browser's site settings.
An ad showed a phone number and I called it. What now?
The number belongs to scammers, not to Microsoft or an antivirus company. If you only talked, hang up and do not call back. If you let them connect to the PC, disconnect it from the internet, uninstall the remote access program they used, such as AnyDesk, TeamViewer, ScreenConnect or UltraViewer, and run a full and offline scan.
If you paid or gave bank details, call your bank at once on the number printed on your card. Change any passwords you typed while they were connected, and report the call.
Can adware slow down my PC?
Yes. Adware runs in the background, loads ad scripts, opens extra tabs and contacts its servers, all of which use processor time, memory and bandwidth. Ad-heavy extensions also slow down every page, because they inspect and change it before you see it.
The effect is strongest on older PCs and when several adware programs arrived together. After removal, restart the PC and check Task Manager for anything still using a lot of resources that you do not recognise. Speed usually returns to normal once the ads stop.
How did Full System Care get on my computer?
The app is developed for all versions of Windows operating systems and can be downloaded from the official website, although most users find it installed after the installation of freeware from third-party sites.
Software of this kind often comes bundled with free programs, fake updates or downloads from unofficial sites. It can also arrive through a browser extension or a notification you allowed on a spam page. Think back to what you installed or allowed just before the first ad or redirect appeared.
Will Fortect remove Full System Care?
Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.
For Full System Care, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.
Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.
Sources
- Lesvirus: Lesvirus (read October 7, 2026)
- The Next Web: Apple and Google remove 50+ apps that served malicious ads (no longer online) (read October 7, 2026)
- Google Chrome Help: Use notifications to get alerts (no longer online) (read October 7, 2026)
- FTC: How to recognize, remove and avoid malware (read October 7, 2026)
- Microsoft Learn: Microsoft Defender Offline (read October 7, 2026)