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How to uninstall Perfect Optimizer

Also Known As: Perfect Optimizer potentially unwanted application
Damage level: Medium

What is Perfect Optimizer?

Perfect Optimizer is advertised as software that supposedly repairs, cleans and optimizes the operating system. In fact, this program is distributed in a dubious way and, therefore, is categorized as a potentially unwanted application (PUA). Users often download and install these rogue apps inadvertently.

Perfect Optimizer unwanted application

Perfect Optimizer includes two main features: "Memory Optimizer" and "Startup Speedup". These features supposedly optimize computers (improve performance). In fact, to use any of these features, the full version must be purchased (to enter a license key).

Most PUAs not function as promised: they do not fix any genuine issues, and simply generate fake scan results to trick people into paying for activation. It is likely that Perfect Optimizer is also one of these rogue programs and should, therefore, not be trusted or purchased.

Note that its downloader promotes McAfee and Avast, which are legitimate programs. The downloaders and installers of apps such as Perfect Optimizer are often used to distribute other potentially unwanted apps (e.g., adware, browser hijackers). Adware-type apps serve coupons, banners, surveys, pop-ups and other types of advertisements.

These ads often promote (open) untrusted websites or even run scrips designed to download and install unwanted programs. Browser hijackers promote fake search engine addresses by changing certain browser settings.

Note that adware-type apps and browser hijackers often gather various data such as browsing details (e.g., IP addresses, geolocations, entered search queries, addresses of visited websites, and so on). Some PUAs are also capable of accessing sensitive information.

The data could be sold to third parties (potentially, cyber criminals) or misused to generate revenue in other ways. Therefore, if PUAs of this type are already installed on browsers and/or operating systems, uninstall them immediately. Do not trust Perfect Optimizer or other PUAs.

Threat Summary:
Name Perfect Optimizer potentially unwanted application
Threat Type PUP (potentially unwanted program), PUA (potentially unwanted application).
Supposed Functionality This software supposedly cleans, repairs and optimizes systems.
Detection Names Avast (Win32:PUP-gen [PUP]), AVG (FakeAV.caf), ESET-NOD32 (LNK/Agent.CH), Microsoft (Misleading:Win32/PerfectOptimizer), 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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Perfect Optimizer is similar to Registry Life, RocketFixio and WinOptimizer. These programs should not be trusted, since they are distributed in dubious ways, do not fix any errors/issues, and are of no use in any other ways. Common methods used to distribute these programs are described below.

How did potentially unwanted applications install on my computer?

PUAs are often distributed by including them into the download/installation set-ups of other programs as 'additional offers'. This distribution method is known as "bundling". Generally, information about additional downloads and installations can be found in "Custom", "Advanced" and other settings of the set-ups.

The same settings can be used to decline the offers, however, many users fail to check and change them. When users download and install programs without changing the aforementioned setting, they often allow for additionally-included applications to infiltrate.

Unwanted downloads and installations are also caused by clicking deceptive advertisements that execute certain scripts.

How to avoid installation of potentially unwanted applications

It is not safe to download software/files from untrusted, unofficial pages, through torrent clients, eMule (and other Peer-to-Peer networks), third party downloaders, etc. Third party installers should not be used to install software. The safest way to download files and programs is using direct links and and official websites.

Check all "Custom", "Advanced" or other similar settings, and decline offers to download or install unwanted apps. Do not click intrusive ads, since they can open untrusted/potentially malicious websites or even cause unwanted downloads and installations. In most cases, such ads appear on dubious websites, however, in some cases they may appear on legitimate pages.

Remove any suspicious extensions, add-ons and plug-ins installed on the browser. The same should be applied to programs of this kind that are installed on the operating system. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.

Appearance of Perfect Optimizer application (GIF):

Appearance of Perfect Optimizer PUA (GIF)

Installation setup of Perfect Optimizer application:

Perfect Optimizer PUA installation setup

Downloader of Perfect Optimizer installer:

downloader of the perfect optimizer installer

Downloader designed to download Perfect Optimizer and promote Avast, and McAfee:

perfect optimizer unwanted application downloder promoting avast perfect optimizer unwanted application downloder promoting mcafee

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Quick menu:

Removal of potentially unwanted applications:

Windows 11 users:

Accessing Apps and Features in Windows 11

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:

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.

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.

macOS (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.

Perfect Optimizer adware uninstall via Control Panel

In the uninstall programs window, look for "Perfect Optimizer" 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, Perfect Optimizer 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 perfect optimizer 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 perfect optimizer 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 perfect optimizer 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 perfect optimizer 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 perfect optimizer potentially unwanted application from your computer, please ask for assistance in our malware support forum.

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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
Perfect Optimizer potentially unwanted application QR code
Scan this QR code to have an easy access removal guide of Perfect Optimizer potentially unwanted application on your mobile device.
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