This page aims to help you remove Firefox-patch.js. These Firefox-patch.js removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

You’ve reached our page due to a possible infection with Firefox-patch.js, which you’ve probably became aware of thanks to the numerous ads in your browser. In fact this is an issue related to a pop-up message “Urgent Firefox Update“. In case you have concerns regarding the safety of this particular program, there’s no need to panic. Firefox-patch.js is a type of adware, which is by far not considered an actual threat to your system’s security. It’s not a virus, though many websites throughout the web will have you believe so, either due to their desire to scare you or due to simple misunderstanding of the topic. Nevertheless, programs like these are often classified as potentially unwanted, because they can be both extremely annoying and they can indirectly pose as a risk to you and your PC. For this reason we recommend to all users to remove the unwanted software. You can do this with the help of the instruction provided below. But let us first understand the basic principles adware functions by. This will also help you avoid future infections with it.

So, it’s not a virus – how is it a risk then?

True, it doesn’t share any of the typical characteristics of malware, like the infamous ransomware or Trojans, but there are several features to Firefox-patch.js that may open the doors for external security hazards. For one, adware is known for gathering the separate user’s browsing-related details in order to determine what he or she is interested in. This is only logical, because the adware developers depend on creating more appealing ads to make a profit. Their software operates based on the Pay per click scheme, which is a popular online business strategy, enabling the developers to earn money from each click their ads attract. The only unsettling thing about this is that all of the gathered information that has to do with your surfing habits can later be sold to third parties. Who they are and what they intend to do with the purchased data is, unfortunately, something we’ll never know and can therefore lead to possible data misuse.

Another aspect to adware that makes it highly undesirable to have is the fact that sometimes the displayed pop-ups, banners and box messages may not be legit. In fact, they could end up taking you to malicious websites, infested with harmful programs like the aforementioned ransomware, which is, by the way, the world’s number one cyber-security threat. This is, of course, a little bit of an extreme scenario, but the possibility is out there, nonetheless. This is also a reason why we urge users to abstain from interacting with any of the showcased adverts, no matter how tempting or attractive they may appear as. And if you’re still not convinced about removing Firefox-patch.js from your PC, here’s one more thing to consider. Though it may often be promoted as a browser-enhancing tool, it tends to be quite the opposite. As a result of the large quantity of advertising materials it generates and distributes, it may end up using a lot of your computer’s resources. As a result this may lead to sluggish performance, your browser freezing or even crashing.

How it invades your system

There are several ways you could have gotten Firefox-patch.js on your system and a few of them are: spam emails, clicking on ads that were intended to install in on your PC or other adware-related programs that may have brought it along with them. However, the most commonly applied tactic is program bundling. It’s the practice of including adware (or other software) in the installation package of a third-party program, which is usually distributed for free. Good places to find these include torrent sites, file sharing sites and various open-source download platforms. A reliable way to avoid infection would be to stay off websites like these altogether, but in today’s world, where everything is about sharing information and data – we realize that would be a non realistic expectation. Instead, you can be smarter about installing newly downloaded programs and having an educated approach towards the setup. Most users tend to opt for the default installation in the setup wizard, which allows the predetermined settings to be implemented. To prevent this from happening, you should customize the settings by choosing the advanced (custom) setup. This way you will see what else has been included and you will be able to uncheck anything that seems unwanted.


Name Firefox-patch.js
Type  Adware/Browser Hijacker
Detection Tool

Firefox-patch.js Removal

Search Marquis is a high-profile hijacker – you might want to see if you’re not infected with it as well.

You can find the removal guide here.


About the author

Violet George

Violet is an active writer with a passion for all things cyber security. She enjoys helping victims of computer virus infections remove them and successfully deal with the aftermath of the attacks. But most importantly, Violet makes it her priority to spend time educating people on privacy issues and maintaining the safety of their computers. It is her firm belief that by spreading this information, she can empower web users to effectively protect their personal data and their devices from hackers and cybercriminals.


  • You should probably remove it since it is likely to be unwanted. Make sure to save the file after you delete the IP.

  • Yes, since it does not allow you to save the changes that way, here is what you should try and see if it works: Copy-past the following line into the Start Menu search bar: notepad %windir%/system32/Drivers/etc/hosts . Right-click onto the first of the results and select Run as Administrator. Now, the file will open with Administrator privileges and you should be able to edit it. Tell us in the comments if this worked for you or if you should need additional aid.

  • You are most welcome. Be sure to contact us in case you run into any similar problem in future – we will be here to help you!

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