How to uninstall PC Win Booster

Also Known As: PC-Win-Booster potentially unwanted application
Distribution: Low
Damage level: Medium

PC Win Booster removal instructions

What is PC Win Booster?

As its name suggests, PC Win Booster is software designed to improve computer performance. In fact, this app is distributed by including it into the set-ups of other programs. Programs distributed in this way are categorized as potentially unwanted applications (PUAs). These rogue apps have a dubious reputation and should not be trusted.

PC Win Booster unwanted application

PC Win Booster allows users to scan computers for Registry issues, junk files, Temporary Internet Files, broken shortcuts, malware, corrupted applications, etc. In summary, it supposedly improves computer performance by detecting issues and fixing them. Note that PC Win Booster is not freeware and users cannot fix any of the 'detected issues' without having to activate (purchase) it. As mentioned, this app is categorized as a PUA. Note that PUAs such as PC Win Booster display fake scan results to trick people into paying for 'full versions'. When activated, this bogus software does not fix any problems (this is likely to be the case with PC Win Booster).Developers often include more than PUA into the download and/or installation set-ups of other programs. Therefore, it is possible that PC Win Booster is distributed together with a browser hijacker and/or an adware-type app. Browser hijackers are programs that promote fake search engine addresses by changing certain browser settings. Adware-type apps are programs that serve various online advertisements. Both browser hijackers and adware-type apps can collect browsing-related and/or other sensitive data as well. The data could be misused by developers to generate revenue or sold to third parties (potentially, cyber criminals). This can lead to problems relating to browsing safety, online privacy, and some people might even become victims of identity theft. Therefore, remove all PUAs from the browser and computer immediately, including PC Win Booster.

Threat Summary:
Name PC-Win-Booster potentially unwanted application
Threat Type PUP (potentially unwanted program), PUA (potentially unwanted application).
Supposed Functionality This software supposedly improves computer performance.
Detection Names Avira (no cloud) ({app}\PCWinBooster.exe), ESET-NOD32 (A Variant Of Win32/UwS.PCWinBooster.C), Microsoft (Misleading:Win32/Boresoto), Webroot (W32.Deceptor.Sorentiosystems), Full List Of Detections (VirusTotal).
Symptoms A program that you do not recall installing suddenly appeared on your computer. A new application is performing computer scans and displays warning messages about 'found issues'. Asks for payment 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)

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More examples of PUAs similar to PC Win Booster include Fast Computer, WisePCDoctor and Tuneup Pro. These programs supposedly improve computer performance by fixing various issues and errors, removing unnecessary files, etc., however, they are categorized as PUAs and often trick people into paying for activation, rather than fixing any problems.

How did potentially unwanted applications install on my computer?

Typically, PUAs are distributed by including them into the download/installation set-ups of other programs. This distribution method is known as "bundling" and works when people download and install their programs without making changes to the set-ups. I.e., they leave settings such as "Custom" and "Advanced" unchanged. In this way, they agree by default with offers to download or install additionally-included apps. In some cases, these downloads/installations are caused by clicking deceptive advertisements. Some ads can download/install unwanted apps by executing certain scripts.

How to avoid installation of potentially unwanted applications

Programs and files should be downloaded only from official websites and via direct links. Other channels (e.g., Peer-to-Peer networks such as torrent clients, eMule, unofficial pages, third party downloaders) are often used to distribute unwanted, sometimes even malicious apps. The same applies to third party installers, which should be avoided. Check all download and installation set-ups and decline offers to download or install additionally-included apps (these offers can usually be found in "Custom", "Advanced", and other similar settings). Do not click ads, especially those displayed on dubious pages, since they can execute scripts that download and install unwanted software. They might also open dubious websites. Remove any suspicious, unwanted apps (plug-ins, add-ons, extensions, etc.) already installed on the browser, and programs of this kind installed on the computer. If your computer is already infected with PUAs, we recommend running a scan with Malwarebytes for Windows to automatically eliminate them.

Appearance of PC Win Booster application (GIF):

Appearance of PC Win Booster PUA (GIF)

Installation set-up of PC Win Booster application:

PC Win Booster PUA installation setup

Website promoting PC Win Booster application:

Website used to promote PC Win Booster PUA

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Quick menu:

Removal of potentially unwanted applications:

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

Windows XP users:

Accessing Add or Remove Programs in Windows XP

Click Start, choose Settings and click Control Panel. Locate and click Add or Remove Programs.

Windows 10 and Windows 8 users:

Accessing Programs and Features (uninstall) in Windows 8

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.

Mac OSX users:

Uninstall app in OSX (Mac)

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.

PC Win Booster adware uninstall via Control Panel

In the uninstall programs window, look for "PC Win Booster" (or "PC-Win-Booster") 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, PC Win Booster did not install any unwanted browser extensions, however, some unwanted applications can be installed together with adware and browser hijackers. If you experience unwanted ads or redirects when browsing the internet, continue with the removal guide below.

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing rogue extensions from Internet Explorer step 1

Click the "gear" icon Internet Explorer options 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".

Removing rogue extensions from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the pc-win-booster 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.

Resetting Internet Explorer settings to default on Windows XP

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.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing rogue extensions from Google Chrome step 1

Click the Chrome menu icon Google 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.

Removing rogue extensions from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the pc-win-booster potentially unwanted application, reset your Google Chrome browser settings. Click the Chrome menu icon Google 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.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plug-ins from Mozilla Firefox:

Removing rogue extensions from Mozilla Firefox step 1

Click the Firefox menu firefox menu icon (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.

Removing rogue extensions from Mozilla Firefox step 2

Optional method:

Computer users who have problems with pc-win-booster 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, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

removing adware from safari step 1 - accessing preferences

Make sure your Safari browser is active, click Safari menu, and select Preferences....

removing adware from safari step 2 - removing extensions

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...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge (Chromium) logoRemove malicious extensions from Microsoft Edge:

Removing adware from Microsoft Edge step 1

Click the Edge menu icon Microsoft Edge (chromium) 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.

Removing adware from Microsoft Edge step 2

Optional method:

If you continue to have problems with removal of the pc-win-booster potentially unwanted application, reset your Microsoft Edge browser settings. Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge) and select Settings.

Microsoft Edge (Chromium) reset step 1

In the opened settings menu select Reset settings.

Microsoft Edge (Chromium) reset step 2

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.

Microsoft Edge (Chromium) reset step 3

  • If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.

Summary:

declining installation of adware while downloading free software sampleCommonly, 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.

Removal assistance:
If you are experiencing problems while trying to remove pc-win-booster potentially unwanted application from your computer, please ask for assistance in our malware support forum.

Post a comment:
If you have additional information on pc-win-booster potentially unwanted application or it's removal please share your knowledge in the comments section below.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Software uninstall instructions
Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
PC-Win-Booster potentially unwanted application QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of PC-Win-Booster potentially unwanted application on your mobile device.
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