Win Erx03

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This page aims to help you remove Win Erx03 Virus. Our removal instructions work for Chrome, Firefox and Safari, as well as every version of Windows and MacOS.

  Name Win Erx03 
 Removal Summary To successfully remove Win Erx03 manually: 1: Go and search for rogue programs in your control panel. 2: Look for infected files on your PC (we provide a free online scanner to check) 3: Cleanup your browser settings and executables. 4: Clean your registries to make sure the redirect doesn’t return.
 Automatic Detection 

Win Erx03 

Win Erx03 is a scam message that aims to scare users into committing to unsafe actions like accepting to download whatever the message suggests.

Step 1
Step 2
Step 3
Step 4
Step 1

Hold the Start Key and R -  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. Look at the image below - if you are hacked, there will be a bunch of other IPs connected to you. Remove them from the list. Important: if anything has changed your search engine or you are experiencing redirects to websites, add them in the hosts file and save it. This should prevent them from opening in your browser. 

hosts_opt (1)

After you are done with the hosts file, go to your desktop and hold together the Start Key and R. Type appwiz.cpl --> OK.


You are now in the Control Panel. Look for suspicious entries installed without your knowledge around the time you realized you have a malware. If you find any - uninstall them.

After you are done, proceed to Step 2 - it is the most important step in removing your problem.

Step 2


Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the "Details" Tab on Win 8 and 10). Try to determine which processes are dangerous. Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner. If you find infected processes, end them in the task manager, then delete the files that the processes lead to.

You need to complete Step 2 or the malware may reinstall itself in Step 3 - cleaning up your browsers.

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result


Step 3

Right click on the browser’s shortcut ---> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Removal for Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat ---> Disable. Go to IE GEAR —–> Internet Options ---> change the URL t if it's not what you normally use ---> Apply.

firefox-512 Removal for Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons ----> Extensions.

pic 6

Find the adware/malware ---> Remove.
chrome-logo-transparent-backgroundRemoval for Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called "Default" inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome. If the issue wasn't fixed, bring back the "old" default, by renaming "Backup default" to "Default."


Step 4

Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat's Name. Right click and delete any entries you find with a similar name. If they don't show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER----Software-----Random Directory. It could be any one of them - ask us if you can't discern which ones are malicious.
    HKEY_CURRENT_USER----Software---Microsoft----Windows---CurrentVersion---Run-- Random
    HKEY_CURRENT_USER----Software---Microsoft---Internet Explorer----Main---- Random

After you are done with Regedit, open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using ---> Properties ---> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced ---> the DNS tab. Remove everything here (if there is something) ---> OK.


This is the end of the guide. If none of the steps worked, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


If you have recently had a software app named Win Erx03 installed on your computer and added to your browsing program (IE, Firefox, Chrome or some other browser), then you’re likely currently experiencing different types of browsing disruptions – intrusive ads on your screen, random page redirects and even certain changes that have been enforced upon your browser by the unpleasant app. Such changes are likely to be replacements of your browser’s toolbar, starting page, search engine tool, new-tab page or other similar modifications to certain browser elements. Usually, the imposed modifications would occur without your approval as applications like Win Erx03 typically tend to do whatever they have been programmed to do without asking for the end-user’s permission. This is actually one of the main reasons why such software tend to be regarded as unwanted. In fact, many users deem such apps malware or viruses. Here, however, we need to mention that Win Erx03 is no virus – it isn’t some nasty and dangerous program like a Ransomware or a Trojan Horse and although it could indeed be quite irritating if you have it on your computer, it is rather unlikely to cause any actual damage to your computer, data or virtual privacy. That said, we still advise you to eliminate the pesky app if you currently have it on your machine as this is pretty much the only way to stop the constant flood of ads and page redirects as well as the only way to successfully and effectively revoke the imposed browser changes and thus bring your browser back to normal.

Browser Hijackers

The software group to which Win Erx03 belongs is known as browser hijackers. All in all, those are apps and software components that seemingly function similar to regular browser add-ons with the main difference being that hijackers are typically unwanted and more or less useless or of low quality. Because of that, it’s normally better to get rid of such software as you’d usually gain nothing beneficial from its presence on your computer. Instructions on how you can quickly uninstall and remove Win Erx03 have been posted below for anyone of you who might need them. In the following guide you can also find a professional security tool that can also help you with the hijacker’s removal.

Other problems related to browser hijacker apps

Normally, the main issue that most users have with such software is that it tends to be really invasive and obstructive. However, there’s another even greater problem with software components like Win Erx03 that we need to point out here. Despite not being real malware like Trojans, Spyware, Ransomware and Worms, hijackers are still not the safest pieces of software you could have on your computer. The main reason for that is the uncontrolled nature of their ads-generation. Many of the ads you see and the page redirects that you are likely to experience might be unreliable, unsafe and even hazardous. As you probably already know, a lot of online ads and offers aren’t really what they seem in the sense that they might advertise some product or site but actually redirect you to some other web location that isn’t really what you wanted to visit. Sometimes, this could go as far as get you redirected to sites and pages with shady contents or even ones that are used for malware distribution of threats like Spyware, Rootkits, Ransomware and other similar noxious viruses. The best thing to do in order to avoid landing on such sketchy online locations would be to eliminate the hijacker and thus cease its ad-generating services. As we already mentioned, the guide and the removal tool from this page could help you do that so be sure to give them a go if you currently have Win Erx03 on your computer.

What can you do in order to keep your PC clean off hijackers in the future

Naturally, if you want to maintain a safe and clean PC, you ought to avoid sites and pages with suspicious contents and origins. Also, never download or open stuff from/on the Internet that do not seem to be trustworthy and reliable (pirated software, spam e-mails, obscure ads, etc.). The next thing you must remember is to never install anything before you have explored all settings and options in its setup manager and before you have seen if there aren’t any bundled components that might be unwanted. If you think that something that has been bundled to the installer of a program that you want to install might be undesirable, leave it out by unchecking it from the setup menu before you actually install the main program.


Name Win Erx03
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms A hijacker app will likely try to mess with your browser’s settings and flood your screen with nagging pop-ups and banners.
Distribution Method Hijackers can get distributed via shady ads, spam messages, installation bundles, torrents and so on.
Detection Tool

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

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