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Easy steps to get rid of Win Erx03 (video guide included)

removal by Julie Splinters - - | Type: Adware

Win Erx03 – a fraudulent error seeking to convince users that to fix their damaged Windows OS, they need to download the fake software

Win Erx03 scam

Win Erx03 is a fake error message trying to intimidate users that their Windows OS is damaged and needs fixing immediately. According to the message, users should press the “Update” button to install the alleged repair software. However, this is nothing but a scam that tries to make victims install bogus software or make them disclose personal information that can later be used for illegal purposes. Furthermore, the developers have started using Cloudfront to load their fake alerts (ads have mostly been coming from The main reason for the appearance of Win Erx03 virus is a malicious JavaScript[1] that is embedded in unsafe sites. However, there is a possibility that redirects to questionable sites might result in adware or other unwanted program infection.

Name Win Erx03
Type Scam/fake error/scam/malware/adware
Operating system affected Windows OS, MacOS
Main signs of infection Impersonates Microsoft; informs its victims that the system is damaged; pushes fake updates
Main dangers Downloading malware; revealing personal information
Cause JavaScript on malicious websites or adware
Elimination Use ad blocker; in case of the adware, follow our instructions below
Optimization Scan your system with Reimage Reimage Cleaner Intego if you experience any errors

Online scams like Win Erx03 on Windows 10 are designed to make users download bogus software,[2] as security researchers claim.[3] Unfortunately, such applications can be harmful to the system. For that reason, under no circumstances, you should click “Update” as the executable can be launched straight away. Instead, close down your Google Chrome or another browser that you are using and get rid of Win Erx03 by eliminating the cause.

The error reads as follows:

Your Windows system is damaged
Windows Version: Windows 10
Please, pay attention: Your version of software is damaged and obsolete. As a result, all system files are automatically deleted: 0 seconds
Important: Click on the “Update” button to install the newest software to scan and protect your files from being deleted

Of course, anybody who knows something about computers at least a bit, this claim would sound silly. Your system files cannot be deleted that easily because Windows has certain precaution measures set in place. While some malware could modify or delete files, it would definitely not be announced in the pop-up message.[4] For that reason, many users instantaneously recognize that Win Erx03 pop up is fake.

If you been encountering Win Erx 03 malware occasionally, you do not need to do anything special, simply ignore it. Installing such applications like AdBlock or similar could block many malicious ads and prevent the pop-up from showing up again. However, if you suffer from persistent redirects, intrusive ads, a slow browser, and similar issues, you should remove Win Erx03 virus by uninstalling suspicious entries as it has nothing in common with Microsoft[5] or other companies that it impersonates. You will find full instructions below.

Win Erx03 PUP
Win Erx03 is a potentially unwanted application that may appear in a software bundle

In case you already clicked “Update” and installed something, you should scan your machine with anti-malware software, as most of the malicious software cannot be eliminated manually. Afterward, we recommend using Reimage Reimage Cleaner Intego to fix the damage done to the PC. All components related to Win Erx 03 have to be removed, otherwise, the program might renew itself in a short period of time.

Note that there is no reason for postponing Win Erx03 removal on your computer as this program is created for illegitimate purposes only. If you want to be sure that the rogue program is bombarding fake alerts, we advise scanning your computer system with a reliable computer tool that will show you true results. Once the scan is finished, you should see that there are no errors or malware to the ones that were provided by the scam.

Win Erx03 message
Win Erx03 message is a scam that can lead to malware infections

Stay away from suspicious websites and beware of bundled software

Potentially unwanted programs usually spread with the help of software bundling – a technique that allows freeware developers to hide optional components within the installation wizard of the program. While the information about the additional programs is provided, it is usually hidden under Advanced/Custom installation setting, which most users skip and go for the Recommended/Quick mode.

Another trick used is the pre-selected boxes that users might not notice if they click “Next” several times. Therefore, pick Advanced settings and scrutinize the installation steps to avoid getting tricked. Additionally, it is also as important to pick legitimate download sources for the programs. Third-party websites are filled with adware[6] and other PUPs, although the “reputable” download sites like or Cnet are filled with bundled software.

Get rid of Win Erx03 virus from Google Chrome, Internet Explorer, Mozilla Firefox

Fortunately, there are several ways to prevent the persistent ads from showing up on your browsers. To remove Win Erx03 virus, you should first check for adware on your machine. You can find full instructions below. However, you can also rely on security software that specializes in detecting and eliminating potentially unwanted programs automatically. These programs will ensure you that the elimination will be finished fast and successfully.

If you checked your machine for unwanted applications and did not find any, we suggest you use ad-blocking application for Win Erx03 removal from your browsers. This method can effectively prevent bogus messages from appearing while browsing the web. This is a good option if wanted to avoid ads that show up on specific websites only. However, make sure your system is not infected first.

Follow steps in a special video to fix the system faster

If you spotted the fake alert on your browser, note that it should be terminated before it forces system crashes and redirects to unapproved domains. Those who are struggling with Win Erx03 elimination should check our video guide explaining how to get rid of the virus from the machine completely. The video will guide you through the entire elimination process. Click here to view it:

You may remove virus damage with a help of Reimage Reimage Cleaner Intego. SpyHunter 5Combo Cleaner and Malwarebytes are recommended to detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

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Reimage Happiness
Intego Happiness
Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage Intego, submit a question to our support team and provide as much details as possible.
Reimage Intego has a free limited scanner. Reimage Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

To remove Win Erx03, follow these steps:

Erase Win Erx03 from Windows systems

To stop intrusive pop-ups from Win Erx03 malware, delete all suspicious programs that you can't identify. For that, use this guide:

  1. Click Start Control Panel Programs and Features (if you are Windows XP user, click on Add/Remove Programs). Click 'Start -> Control Panel -> Programs and Features' (if you are 'Windows XP' user, click on 'Add/Remove Programs').
  2. If you are Windows 10 / Windows 8 user, then right-click in the lower left corner of the screen. Once Quick Access Menu shows up, select Control Panel and Uninstall a Program. If you are 'Windows 10 / Windows 8' user, then right-click in the lower left corner of the screen. Once 'Quick Access Menu' shows up, select 'Control Panel' and 'Uninstall a Program'.
  3. Uninstall Win Erx03 and related programs
    Here, look for Win Erx03 or any other recently installed suspicious programs.
  4. Uninstall them and click OK to save these changes. Right click on each of suspicious entries and select 'Uninstall'

Delete Win Erx03 from Internet Explorer (IE)

To get rid of the fake error, reset IE. This procedure will help you refresh your web browser by removing unwanted add-ons:

  1. Remove dangerous add-ons
    Open Internet Explorer, click on the Gear icon (IE menu) on the top right corner of the browser and choose Manage Add-ons. Click on menu icon and select 'Manage add-ons'
  2. You will see a Manage Add-ons window. Here, look for Win Erx03 and other suspicious plugins. Disable these entries by clicking Disable: Right click on each of malicious entries and select 'Disable'
  3. Change your homepage if it was altered by virus:
    Click on the gear icon (menu) on the top right corner of the browser and select Internet Options. Stay in General tab.
  4. Here, remove malicious URL and enter preferable domain name. Click Apply to save changes. Delete malicious URL, enter your desired domain name and click 'Apply' to save changes
  5. Reset Internet Explorer
    Click on the gear icon (menu) again and select Internet options. Go to Advanced tab.
  6. Here, select Reset.
  7. When in the new window, check Delete personal settings and select Reset again to complete Win Erx03 removal. Go to 'Advanced' tab and click on 'Reset' button. Now select 'Delete personal settings' and click on 'Reset' button again

Uninstall Win Erx03 from Microsoft Edge

Clean your Microsoft Edge browser from all unwanted add-ons by performing these instructing steps:

Reset Microsoft Edge settings (Method 1):

  1. Launch Microsoft Edge app and click More (three dots at the top right corner of the screen).
  2. Click Settings to open more options.
  3. Once Settings window shows up, click Choose what to clear button under Clear browsing data option. Go to Settings and select 'Choose what to clear'
  4. Here, select all what you want to remove and click Clear. Select 'Clear' button
  5. Now you should right-click on the Start button (Windows logo). Here, select Task Manager. Open the start menu and select 'Task Manager'
  6. When in Processes tab, search for Microsoft Edge.
  7. Right-click on it and choose Go to details option. If can’t see Go to details option, click More details and repeat previous steps. Right-click 'Microsoft Edge' and select 'Go to details' Select 'More details' if 'Go to details' option fails to show up
  8. When Details tab shows up, find every entry with Microsoft Edge name in it. Right click on each of them and select End Task to end these entries. Find Microsoft Edge entries and select 'End Task'

Resetting Microsoft Edge browser (Method 2):

If Method 1 failed to help you, you need to use an advanced Edge reset method.

  1. Note: you need to backup your data before using this method.
  2. Find this folder on your computer: C:\Users\%username%\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
  3. Select every entry which is saved on it and right click with your mouse. Then Delete option. Go to Microsoft Edge folder on your computer, right-click every entry and click 'Delete'
  4. Click the Start button (Windows logo) and type in window power in Search my stuff line.
  5. Right-click the Windows PowerShell entry and choose Run as administrator. Find Windows PowerShell, right-click it and select 'Run as administrator'
  6. Once Administrator: Windows PowerShell window shows up, paste this command line after PS C:\WINDOWS\system32> and press Enter:
    Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register $($_.InstallLocation)\AppXManifest.xml -Verbose}
    Copy and paste a required command and press 'Enter'

Once these steps are finished, Win Erx03 should be removed from your Microsoft Edge browser.

Get rid of Win Erx03 from Mozilla Firefox (FF)

To remove Win Erx03 message, refresh Firefox browser:

  1. Remove dangerous extensions
    Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons Extensions. Click on menu icon and select 'Add-ons'
  2. Here, select Win Erx03 and other questionable plugins. Click Remove to delete these entries. Select 'Extensions' and look for malicious entries. Click 'Remove' to get rid of each of them
  3. Reset Mozilla Firefox
    Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information. Click on menu icon and then on '?'. Select 'Troubleshooting Information'
  4. Now you will see Reset Firefox to its default state message with Reset Firefox button. Click this button for several times and complete Win Erx03 removal. Click on 'Reset Firefox' button for a couple of times

Remove Win Erx03 from Google Chrome

Delete all PUP-related content from Chrome. Use this guide if help is needed:

  1. Delete malicious plugins
    Open Google Chrome, click on the menu icon (top right corner) and select Tools Extensions. Click on menu icon. Select 'Tools' and 'Extensions'
  2. Here, select Win Erx03 and other malicious plugins and select trash icon to delete these entries. Look for malicious entries and delete each of them by clicking on the Trash bin icon
  3. Click on menu icon again and choose Settings Manage Search engines under the Search section. When in 'Settings', select 'Manage search engines...'
  4. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name. Click 'X' to remove malicious URLs
  5. Reset Google Chrome
    Click on menu icon on the top right of your Google Chrome and select Settings.
  6. Scroll down to the end of the page and click on Reset browser settings. When in 'Settings', scroll down to 'Reset browser settings' button and click on it
  7. Click Reset to confirm this action and complete Win Erx03 removal. Click on 'Reset' button to complete your removal

Erase Win Erx03 from Safari

You can refresh the Safari web browser by following these instructions:

  1. Remove dangerous extensions
    Open Safari web browser and click on Safari in menu at the top left of the screen. Once you do this, select Preferences. Click on 'Safari' and select 'Preferences'
  2. Here, select Extensions and look for Win Erx03 or other suspicious entries. Click on the Uninstall button to get rid each of them. Go to 'Extensions' and uninstall malicious add-ons
  3. Reset Safari
    Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari.... Click on 'Safari' and select 'Reset Safari...'
  4. Now you will see a detailed dialog window filled with reset options. All of those options are usually checked, but you can specify which of them you want to reset. Click the Reset button to complete Win Erx03 removal process. Select all options and click on 'Reset' button

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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