What is Chromnius?

Chromnius is a type of browser hijacker that can cause disruptions and annoyances for users. While it may not be as severe as other types of malware like Ransomware or Trojan Horses, it may still create problems. For instance, it may take control of web browsers such as Chrome, Edge, and Firefox, and force users to visit unfamiliar and potentially unsafe websites. Additionally, it may display pay-per-click ads, sponsored banners, and pop-ups while users are browsing the web, aiming to generate profits for its creators. Chromnius also has the ability to modify browser settings, such as the default search engine, homepage, and new tab page. This can lead to users being redirected to unwanted websites filled with advertisements or even malicious content.

Chromnius adware description
Screenshot of the Chromnius homepage

Is Chromnius safe?

Chromnius is far from being safe or harmless. This browser hijacker carries out intrusive actions that may have a negative impact on users’ browsing experience. It may significantly slow down the performance of web browsers, causing frequent crashes and making it difficult to carry out online tasks efficiently. However, the consequences of Chromnius may go beyond mere inconvenience. The redirection of users to unfamiliar websites may open the door to potential phishing scams, malware infections, and various other online threats. This may put users’ security and privacy at risk. Therefore, it is crucial to take immediate action and remove this software to prevent any further disruptions and potential security breaches. By doing so, users can regain control of their browsers and ensure a safer online experience.

Website promoting Chromnius

Is Chromnius a virus?

Chromnius is not classified as a virus, but rather as a potentially unwanted program (PUP). However, its safety is questionable. Unlike websites that have controllable or blockable ads, “Chromnius virus” is a software specifically designed to flood webpages with numerous sponsored ads. These ads are not easily blocked by regular ad-blockers, and attempts to revert the changes made by the unwanted program to the browser settings may prove ineffective. The modifications implemented by browser hijackers like Chromnius virus are typically unwanted because they are not authorized by users and primarily serve the purpose of aggressively displaying invasive advertisements. These ads constantly prompt users to make purchases, visit specific URLs, download additional software, or sign up for questionable online services.

Chromnius setup

The Chromnius setup process typically involves software bundling, where the program is included as an additional component during the installation of other software. This means that when users download and install certain software from the internet, Chromnius may be automatically installed alongside it without explicit user consent. Software bundling is a common method used by developers to distribute multiple programs together, but it can sometimes result in unwanted applications being installed on the system without the user’s knowledge. Therefore, it is important to be cautious and carefully review the installation process, paying attention to any checkboxes that allow you to opt out of installing additional software. Reading through the Chromnius setup installation prompts and customizing the installation settings can help prevent unwanted programs from being installed on the system.

Deceptive website promoting Chromnius setup


TypeBrowser Hijacker
Detection Tool

How to uninstall Chromnius

 To try and remove Chromnius quickly you can try this:

  1. Go to your browser’s settings and select More Tools (or Add-ons, depending on your browser).
  2. Then click on the Extensions tab.
  3. Look for the Chromnius extension (as well as any other unfamiliar ones).
  4. Remove Chromnius by clicking on the Trash Bin icon next to its name.
  5. Confirm and get rid of Chromnius and any other suspicious items.

If this does not work as described please follow our more detailed Chromnius removal guide below.

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide

Some of the steps may require you to exit the page. Bookmark it for later reference.
Next, Reboot in Safe Mode (use this guide if you don’t know how to do it).

Step1 Uninstall the Chromnius app and kill its processes

The first thing you must try to do is look for any sketchy installs on your computer and uninstall anything you think may come from Chromnius. After that, you’ll also need to get rid of any processes that may be related to the unwanted app by searching for them in the Task Manager.

Note that sometimes an app, especially a rogue one, may ask you to install something else or keep some of its data (such as settings files) on your PC – never agree to that when trying to delete a potentially rogue software. You need to make sure that everything is removed from your PC to get rid of the malware. Also, if you aren’t allowed to go through with the uninstallation, proceed with the guide, and try again after you’ve completed everything else.

  • Uninstalling the rogue app
  • Killing any rogue processes

Type Apps & Features in the Start Menu, open the first result, sort the list of apps by date, and look for suspicious recently installed entries.

Click on anything you think could be linked to Chromnius, then select uninstall, and follow the prompts to delete the app.

delete suspicious apps

Press Ctrl + Shift + Esc, click More Details (if it’s not already clicked), and look for suspicious entries that may be linked to Chromnius.

If you come across a questionable process, right-click it, click Open File Location, scan the files with the free online malware scanner shown below, and then delete anything that gets flagged as a threat.

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
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    Delete Chromnius files and quit its processes.

    After that, if the rogue process is still visible in the Task Manager, right-click it again and select End Process.

    Step2 Undo Chromnius changes made to different system settings

    It’s possible that Chromnius has affected various parts of your system, making changes to their settings. This can enable the malware to stay on the computer or automatically reinstall itself after you’ve seemingly deleted it. Therefore, you need to check the following elements by going to the Start Menu, searching for specific system elements that may have been affected, and pressing Enter to open them and see if anything has been changed there without your approval. Then you must undo any unwanted changes made to these settings in the way shown below:

    • DNS
    • Hosts
    • Startup
    • Task
    • Services
    • Registry

    Type in Start Menu: View network connections

    Right-click on your primary network, go to Properties, and do this:

    Undo DNS changes made by Chromnius

    Type in Start Menu: C:\Windows\System32\drivers\etc\hosts

    Delete Chromnius IPs from Hosts

    Type in the Start Menu: Startup apps

    Disable Chromnius startup apps

    Type in the Start Menu: Task Scheduler

    Delete Chromnius scheduled tasks

    Type in the Start Menu: Services

    Disable Chromnius services

    Type in the Start Menu: Registry Editor

    Press Ctrl + F to open the search window

    Clear the Registry from Chromnius items

    Step3 Remove Chromnius from your browsers

    • Delete Chromnius from Chrome
    • Delete Chromnius from Firefox
    • Delete Chromnius from Edge
    1. Go to the Chrome menu > More tools > Extensions, and toggle off and Remove any unwanted extensions.
    2. Next, in the Chrome Menu, go to Settings > Privacy and security > Clear browsing data > Advanced. Tick everything except Passwords and click OK.
    3. Go to Privacy & Security > Site Settings > Notifications and delete any suspicious sites that are allowed to send you notifications. Do the same in Site Settings > Pop-ups and redirects.
    4. Go to Appearance and if there’s a suspicious URL in the Custom web address field, delete it.
    1. Firefox menu, go to Add-ons and themes > Extensions, toggle off any questionable extensions, click their three-dots menu, and click Remove.
    2. Open Settings from the Firefox menu, go to Privacy & Security > Clear Data, and click Clear.
    3. Scroll down to Permissions, click Settings on each permission, and delete from it any questionable sites.
    4. Go to the Home tab, see if there’s a suspicious URL in the Homepage and new windows field, and delete it.
    1. Open the browser menu, go to Extensions, click Manage Extensions, and Disable and Remove any rogue items.
    2. From the browser menu, click Settings > Privacy, searches, and services > Choose what to clear, check all boxes except Passwords, and click Clear now.
    3. Go to the Cookies and site permissions tab, check each type of permission for permitted rogue sites, and delete them.
    4. Open the Start, home, and new tabs section, and if there’s a rogue URL under Home button, delete it.

    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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