How to uninstall the DiskFixer unwanted application

Also Known As: DiskFixer potentially unwanted application
Distribution: Low
Damage level: Medium

DiskFixer removal instructions

What is DiskFixer?

DiskFixer software is endorsed as a tool for system optimization. It is allegedly capable of running various detection and removal processes, which supposedly enhance system performance. This program has a promotional website from which a free trial version can be downloaded and the full version purchased, however, DiskFixer also proliferates in other dubious ways. Therefore, it is classed as a Potentially Unwanted Application (PUA).

DiskFixer unwanted application

All software classified as PUAs is untrusted. You are strongly advised against downloading/installing and/or purchasing this software. PUAs such as DiskFixer usually require activation to perform their advertised functions. I.e., users need to purchase them. Despite any purchases made, however, they remain nonoperational. Furthermore, their download/install set-ups frequently contain more than one PUA (e.g. browser hijackers or adware). While fake system cleaners/optimizers extort money from people, unwanted applications can also possess dangerous capabilities. Some PUAs can cause unwanted redirects to sale-oriented, untrustworthy, compromised, deceptive/scam and malicious sites. Others can run intrusive advertisement campaigns (i.e., deliver pop-ups, banners, surveys, coupons and so on). The delivered ads significantly diminish the browsing experience, generate redirects to harmful web pages and stealthily download/install unwanted content (including PUAs). Another type of PUA can make unauthorized changes to browsers and limit/deny access to settings. All types have data tracking capabilities. They monitor browsing activity (browsing and search engine histories) and collect users' personal information (IP addresses, geolocations and other details). This private data can then be shared with third parties (potentially, cyber criminals) intent on misusing it for profit. To summarize, unwanted apps can cause various browser and system infiltration/infections and lead to financial loss, serious privacy issues and even identity theft. Therefore, you are advised to remove all suspect applications and browser extensions/plug-ins immediately upon detection.

Threat Summary:
Name DiskFixer potentially unwanted application
Threat Type PUP (potentially unwanted program), PUA (potentially unwanted application).
Supposed Functionality This application is supposedly capable of scanning and optimizing the operating system.
Detection Names Cybereason (Malicious.070bf2), SecureAge APEX (Malicious), Malwarebytes (PUP.Optional.DiskFixer), McAfee-GW-Edition (BehavesLike.Win32.AdwareFileTour.gc), Webroot (W32.Trojan.Gen) 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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OneSafe PC CleanerThe PC Power, and Full System Care are examples of other PUAs similar to DiskFixer. These often seem legitimate and normal. They entice users to install with a wide array of "useful" functions, however, the advertised features rarely work as promised and, in most cases, are nonoperational. The only purpose of this unwanted content is to generate revenue for the developers and is not designed with user convenience in mind. Rather than delivering any real value, PUAs force-open untrustworthy/malicious pages, run intrusive ad campaigns, hijack browsers and gather vulnerable data.

How did potentially unwanted applications install on my computer?

DiskFixer can be downloaded from its official download web page. Yet, promotional sites are not the only way that PUAs proliferate. They can also be downloaded/installed together with other content. "Bundling" is the term used to describe this deceptive marketing tactic of pre-packing regular programs with unwanted or malicious additions. Rushing download/installation processes (e.g. ignoring terms, skipping steps, using pre-set options) increases the risk of unintentionally allowing bundled content onto systems. When clicked, intrusive ads can execute scripts designed to download/install PUAs without users' consent.

How to avoid installation of potentially unwanted applications

Research all content to verify its legitimacy, prior to downloading/installing. Use only trustworthy and verified download channels. Peer-to-Peer sharing networks (BitTorrent, eMule, Gnutella, etc.), unofficial and free file-hosting websites, third party downloaders and similar sources are untrustworthy and should be avoided. Untrusted download channels are far more likely to offer deceptive and/or bundled software. When downloading/installing, read the terms, study all available options, use the "Custom/Advanced" settings and opt-out of supplementary apps, tools, features and so on. Intrusive ads typically seem normal and harmless, however, once clicked, they can redirect to dubious pages (e.g. pornography, adult-dating, gambling and others). If you encounter these advertisements/redirects, inspect the device and immediately remove all dubious applications and/or browser extensions/plug-ins. If your computer is already infected with PUAs, we recommend running a scan with Malwarebytes for Windows to automatically eliminate them.

Appearance of DiskFixer application (GIF):

DiskFixer unwanted application appearance (GIF)

DiskFixer installation setup:

DiskFixer installation setup

Website promoting DiskFixer application:

DiskFixer application

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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.

DiskFixer adware uninstall via Control Panel

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

Post a comment:
If you have additional information on diskfixer 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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Removal Instructions in other languages
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
DiskFixer 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 DiskFixer potentially unwanted application on your mobile device.
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