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Urgent Firefox Update “Virus” Removal

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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This page aims to help you remove “Urgent Firefox Update” “Virus”. These “Urgent Firefox Update”  removal instructions work for Firefox as well as every version of Windows.

“Urgent Firefox Update” is a scam that a lot of our readers have been complaining about. See this is int a real pop-up message from the Mozilla Firefox team but an indication that you have a browser hijacker inside your browser of choice. If you’ve come in contact with “Urgent Firefox Update” , you may have found this to be do due to a changed homepage in your browser, different default search engine or perhaps because of the insane bombardment with advertisements from every corner. Yes, we know what you’re going through and we know that it’s very unpleasant, to say the least. That’s exactly why we’ve developed the guide you will find below: to help you remove this nuisance and be sure that no components of it have been left behind. What you’re dealing with at the moment is a type of Browser Hijacker. A Browser Hijacker is designed to produce all sorts of ads, as you have probably guessed by the name, in order to make a profit from them. Based on the famous online money making strategy Pay per click, developers are able to gain a profit each time someone clicks on any of the ads distributed by programs like “Urgent Firefox Update” . Sounds like a convenient and ingenious scheme, which it is, too. But there are a few unsettling things about this way of doing business and we will explain them to you in this article.

Unsettling thing #1:

The way the ads are generated is also very curious. You see, because the clicks are of such importance, it is naturally only desirable that there are more and more of them. So in order for that to happen, Browser Hijacker developers have come up with the great idea of customizing their numerous popups, banners, box messages and such to fit the separate user’s personal preferences. This, in turn, is done by taking into account all of things you do, while browsing the internet. No, they cannot see if you’re picking your nose while scrolling through your Facebook news feed, but they can tell if you’ve been visiting Facebook. And how often you’ve been doing that, too. Along with every other page you like to be on throughout your day, as well as the topics you search for online. This information is analyzed and the ads are then tailored to fit it in the hopes that they will grasp your attention. However, the story of your collected data doesn’t end here. It can be given new life with other people, third parties, to whom it may be sold to. And who knows what those 3rd parties may be up to.

Unsettling thing #2:

You cannot expect given the information above that all the ads “Urgent Firefox Update” presents you with are truly as they seem. It’s not plausible that there are items and services to suit your each and every search online, even more so – that this particular program can market them. Therefore the developers tend to use a bit of trickery here and can easily showcase certain services on, say, a banner, but once you click on it – you’re redirected somewhere completely different. Following that very same principle you may end up on a malicious website, ridden with viruses of the most dangerous and evil type, such as Trojans and ransomware. Those are nothing you would even want to go near, yet the possibility of such a turn of events is still there, however small it may be.

Malicious or not? Urgent Firefox Update “Virus”?

“Urgent Firefox Update” looks a lot like a virus, but browser hijackers are not really considered to be computer viruses. The two above drawbacks to “Urgent Firefox Update” are basically the only ones, not counting the terribly annoying nature of its advertising. A Browser Hijacker may be capable of exposing you to other threats, but does not pose as an actual threat itself. It is by no means malicious, cannot be considered a virus (though many users do like to refer to it that way) and has most certainly nothing in common with the aforementioned types of malware. Nonetheless, it is nothing you would want to keep on your computer and we do recommend removing it and soon. The risks aren’t worth it, there is hardly any gain from it and it might actually undermine you’re PC’s general performance. If you’ve had “Urgent Firefox Update” long enough, you are sure to have noticed certain sluggishness, certain apps may be taking extremely long to load and surfing might not be going as fast. You might even have been faced with browser and even system crashes, so that’s certainly not what an ideal online experience should be like. Proceed to the below guide to uninstall the pesky program and let us know in the comments section if your encountered any difficulties along the way.


Name “Urgent Firefox Update”
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Numerous adverts visible while browsing; might even notice a changed homepage and/or default search engine.
Distribution Method Mostly via program bundles, but could also be spread through spam emails and other Browser Hijacker.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version.
More information about SpyHunter and steps to uninstall.


Urgent Firefox Update “Virus” Removal



Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite files for you.

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:

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

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


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

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

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

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.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

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  Remove Urgent Firefox Update from 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 to whatever you use (if hijacked) —> Apply.

firefox-512 Remove Urgent Firefox Update from Firefox:

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

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Urgent Firefox Update from 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.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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

If the guide didn’t help you, download the anti-virus program we recommended or ask us in the comments for guidance!

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