A1PCCleaner: what it is and how to remove it
A1PCCleaner by A1 PC Cleaner is a tool that raises lots of suspicions. It's described as an optimization tool that is supposed to enhance PC's performance, protect user's privacy, fix registry errors, clean outdated files, remove junk and so on.
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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A1PCCleaner: summary
| Detection names | No Microsoft detection name is known |
|---|---|
| Distribution | Not recorded in the old report |
| Damage | Not recorded in the old report |
| Name | A1PCCleaner |
| Type | System optimizer |
| Symptoms | An unknown program in Installed apps |
| 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 4 more facts
| Evidence | One write-up by a security site; details still limited |
|---|---|
| Program | A1PCCleaner |
| First seen | 26 April 2021 |
| Facts checked | 7 October 2026 |
Is A1PCCleaner safe? Why it is flagged
From our report of Apr 2021 · not reviewed since
What is A1PCCleaner?
A1PCCleaner by A1 PC Cleaner is a tool that raises lots of suspicions.
It's described as an optimization tool that is supposed to enhance PC's performance, protect user's privacy, fix registry errors, clean outdated files, remove junk and so on. Unfortunately, most of the users rush to remove this program once they notice its presence on computers. That's because it initiates unwanted operations on their computers and may try to trick them into buying the license of this app.
In fact, security experts claim that A1PCCleaner virus is a potentially unwanted program (PUP) or even a scareware. First of all, it's very important to mention that it may infiltrate computers along with other freewares. Once installed, it may corrupt various settings on your computer, run several processes, use your PC's resources and diminish its performance.
It addition to that, it may install a file in Windows startup and create a scheduled task in order to launch its scanners every time you turn on the computer. Consequently, you may continuously see how A1PCCleaner virus loads it scanners and how it's supposedly scanning all files on your computer.
After that, it may deliver a long list of various computer infections, outdated registries, corrupted files and offer you to fix them. However, as soon as you click 'Fix now', 'Fix errors', and similar buttons, you will be immediately redirected to a purchase website and asked to buy the license.
We highly recommend you NOT to buy this licensed because it's useless, to say the least. Be aware that A1PCCleaner virus delivers predetermined scan results, which inform about various error, suspicious registries, and similar things in order make you pay money for the useless program.
By the way, you should consider the fact that buying the license may cause you serious issues because you may disclose your banking information to online scammers. Therefore, we highly recommend you to remove A1PCCleaner virus using and this way ensure your PC's security.
From our report of Apr 2021 · not reviewed since
How can A1PCCleaner hijack my computer?
A1PCCleaner tool is promoted on its official website and can be downloaded right there.
However, after such a download you may also later be asked to buy the license. However, as we have already mentioned, this dubious program may also be downloaded from the Internet via other freewares, such as download managers, PDF creators, media players and so on.
To prevent this from happening, it's very important to pay an appropriate amount of attention to freeware's installation process. Since the majority of Internet users do not check freewares properly, they end up with programs, such as A1PCCleaner virus on their computers and them feel concerned where it came from. To prevent that, you should carefully monitor the installation of every freeware.
Always select Advanced or Custom installation option and check whether your selected freeware is filled with 'optional downloads'. If you find browser add-on, plug-in, toolbar or extension, make sure that you unmark ticks claiming that you agree to install it. If A1PCCleaner virus would infiltrate you computer, you may start receiving such and similar alerts on your screen:
From our report of Apr 2021 · not reviewed since
More from our earlier report on A1PCCleaner
- Your PC may be at Risk Check for Malware and Registry Issues You need to fix your PC problem immediately.
- Your Data is on 94% Risk FIX
How to uninstall A1PCCleaner
How to remove A1PCCleaner
Uninstall it, then remove what keeps it starting with Windows.
Nothing it flagged needs fixing.
Step 1: Uninstall A1PCCleaner
A1PCCleaner 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 A1PCCleaner, 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 2: Remove it from startup
Press Ctrl + Shift + Esc to open Task Manager and select Startup apps (Windows 11) or the Startup tab (Windows 10). Disable entries you do not recognise, especially ones with no publisher or with a name that copies a Windows component.
Right-click an entry and choose Open file location to see where it runs from: programs in
%AppData%or%Temp%deserve a closer look. Some entries are not listed there but in the registry Run keys, which the procedure below shows how to check.Full procedure with screenshots: Stop apps from opening at startup On uGetFix
Step 3: Delete the folders left behind
Uninstalling often leaves the program's folders, and some threats reinstall themselves from them.
Press Windows + R, type
%LocalAppData%and press Enter, then do the same for%AppData%and %ProgramData%, and look for folders named after A1PCCleaner, its publisher or created on the day the problem started. Delete those folders, and check C:\Program Files and C:\Program Files (x86) too.If Windows says a file is in use, end it in Task Manager or delete the folder after a restart in Safe Mode. The folders are the same in Windows 11 and Windows 10.
Full procedure with screenshots: Remove what malware leaves behind in Windows
Step 4: Scan the PC, then run the offline scan
A scan finds the parts of A1PCCleaner 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
Do not let government spy on you
The government has many issues in regards to tracking users' data and spying on citizens, so you should take this into consideration and learn more about shady information gathering practices.
Avoid any unwanted government tracking or spying by going totally anonymous on the internet.
You can choose a different location when you go online and access any material you want without particular content restrictions. You can easily enjoy internet connection without any risks of being hacked by using VPN.
Control the information that can be accessed by government any other unwanted party and surf online without being spied on. Even if you are not involved in illegal activities or trust your selection of services, platforms, be suspicious for your own security and take precautionary measures by using the VPN service.
Backup files for the later use, in case of the malware attack
Computer users can suffer from data losses due to cyber infections or their own faulty doings.
Ransomware can encrypt and hold files hostage, while unforeseen power cuts might cause a loss of important documents. If you have proper up-to-date backups, you can easily recover after such an incident and get back to work. It is also equally important to update backups on a regular basis so that the newest information remains intact - you can set this process to be performed automatically.
When you have the previous version of every important document or project you can avoid frustration and breakdowns. It comes in handy when malware strikes out of nowhere. Use for the data restoration process.
From our report of Apr 2021 · not reviewed since
How to remove A1PCCleaner virus?
In order to remove A1PCCleaner virus, you should either run a full system scan with , or follow these steps:
Click 'Start' and select 'Control Panel. Click 'Uninstall a Program' under 'Programs'. Choose 'A1PCCleaner' and select the 'Uninstall/Change' option. Click 'Yes' and 'OK' to save the changes.
Questions about A1PCCleaner
Is A1PCCleaner a virus?
Most programs that appear the way A1PCCleaner 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.
A1PCCleaner will not uninstall. What can I do?
First restart the PC and try again, because the program may have been running and locked its own files. If the uninstaller is missing or fails, start Windows in Safe Mode, where most third-party programs do not start, and remove A1PCCleaner from Installed apps there.
If it still refuses, delete its startup entry and its scheduled task, restart, and try once more. A program that actively prevents removal is behaving like malware, so finish with a Microsoft Defender offline scan. Avoid third-party uninstallers offered on search ads; several of them are unwanted programs themselves.
How long does removing A1PCCleaner take?
Usually ten to twenty minutes. Uninstalling takes a minute; checking the Startup list, Task Scheduler and the browsers takes the rest. A full scan in Windows Security can add half an hour on a large drive, but you can keep using the PC while it runs.
Restart at the end and watch for A1PCCleaner in the list of installed apps. If it is gone after a day of normal use, you are finished. If it returns, plan for an offline scan, which restarts the PC and takes around fifteen minutes.
Is A1PCCleaner harmful?
It is unwelcome rather than destructive, based on what has been reported: A1PCCleaner in the list of installed apps. Unwanted programs like this slow Windows down, use your connection, show offers or change settings, and they make money for their publisher at your expense. The bigger concern is what arrived with them.
Bundled installers often add two or three programs at once, and some of those change the browser or install updaters that fetch more software later. Remove A1PCCleaner, then sort Installed apps by date and remove anything else from the same day. A full scan in Windows Security afterwards confirms that nothing more serious came along.
Is A1PCCleaner safe to keep?
It is not dangerous in the way malware is: it does not steal passwords or encrypt files. It can still cost money through subscriptions, show ads that lead to scam pages, collect usage data and slow the start of Windows. If you installed A1PCCleaner on purpose and find it useful, you can keep it:
- turn off start with Windows
- offers and data sharing in its settings
- choose Custom during updates
If you do not know where it came from, remove it, together with anything installed on the same day.
Can A1PCCleaner see my passwords?
There is no report of that. Unwanted programs make money from ads, offers, data about your browsing or the use of your connection, not from stealing passwords, and the sign reported here is A1PCCleaner in the list of installed apps.
That said, a bundle can contain more than one program, and you cannot be sure what else ran on the day it arrived. After removing A1PCCleaner, run a full scan in Windows Security.
If it finds a password stealer or a trojan, change your passwords from another device. If the scan is clean and you see no unknown sign-ins, there is no need to change them.
A1PCCleaner has no uninstall option. What now?
Some unwanted programs leave no entry in Installed apps on purpose. Find the program's files instead:
- open Task Manager while A1PCCleaner in the list of installed apps is visible
- right-click the process
- choose Open file location
End the process, then look in that folder for an uninstall file. If there is none, delete the folder after checking that it holds nothing you need.
Before deleting, remove the startup entry and any scheduled task that points to it, otherwise it may be recreated. A restart and a full scan in Windows Security finish the job and catch files stored elsewhere.
A1PCCleaner will not uninstall. What can I do?
Close it first: in Task Manager, select every process with its name and click End task, and exit its tray icon. Then uninstall it from Settings > Apps > Installed apps. If the uninstaller fails, shows an error or just reopens offers, restart Windows in Safe Mode, where third-party programs do not start, and uninstall from there.
Afterwards, delete its folders in C:\Program Files and %AppData%, remove its scheduled tasks and run a full scan in Windows Security. As a last step, System Restore to a date before the install can help.
Why does A1PCCleaner reinstall itself?
Programs like A1PCCleaner are often installed with an updater or a companion app whose job is to keep them present. When you uninstall the main program, the helper downloads it again at the next scheduled run or restart.
Find the helper by sorting Installed apps by date and by checking Task Scheduler and Services for entries with the same name or publisher. Remove them all, then delete leftover folders. Turning on Potentially unwanted app blocking in Windows Security also stops many reinstall attempts.
Will Fortect remove A1PCCleaner?
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 A1PCCleaner, 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
- FTC: How to recognize, remove and avoid malware (read October 7, 2026)
- Microsoft Learn: Microsoft Defender Offline (read October 7, 2026)
- Microsoft Learn: How Microsoft names malware (read October 7, 2026)