If you are reading this, you have probably opened your web browser just to notice that the familiar homepage is gone, replaced with an unfamiliar one, and the default search engine has been swapped. Aside from that, some unwanted Addonup ads have probably started to flood your screen, disrupting your online experience. The appearance of your browser might have changed, showcasing unfamiliar features or options and your attempts to visit usual sites might now automatically reroute you to unfamiliar web pages. All these anomalies are disturbing and might suggest your browser has been compromised by software like Addonup, in which case, immediate action is required.

Chrome browser is redirected to Addonup
Addonup is a bothersome computer program, that attaches itself to your web browser.

Is Addonup safe?

Addonup may not be the most dangerous online threat that you may encounter but it should not be overlooked either. This program is a browser hijacker that can tweak your browser’s behavior, compromise personal data, and lead you to questionable websites.

Addonup Virus

The distinction between software such as Addonup, recognized as a browser hijacker, and genuine computer viruses often is unclear. Despite both falling within the category of unwanted software, their operational methods diverge significantly. A computer virus imitates biological behaviors, replicating and potentially inflicting severe damage on a computer’s functions. On the flip side, the “Addonup virus”, a term inaccurately used by many web users, focuses on internet browsers. Its primary objective revolves around directing users to sites that generate revenue through user clicks on paid advertisements. If you want to deal with the “Addonup virus” effectively, you should understand its true nature and act accordingly.

What is Addonup?

Addonup is a bothersome computer program, similar to Advance Pc Pro or Chromstera, that attaches itself to your web browser without seeking clear permission and alters its configurations. It possesses the capability to substitute your usual homepage with another one, introduce an entirely unfamiliar search engine, and initiate browser redirections to random online destinations. Notably, Addonup is engineered with the primary intention of generating profit for its creators through interactions with sponsored advertisements, banners, and links. Once it infiltrates your system, it inundates your screen with numerous flashing promotional messages and pop-ups. While not as severe as other computer issues, dealing with the browser hijacker, its continuous influx of ads and the modifications to your browser can undoubtedly complicate your web browsing experience.

Addonup Pop-ups

The sudden appearance of disruptive Addonup pop-ups when you launch your web browser is anything but pleasant. Although not an instant danger, these unforeseen pop-ups can understandably provoke worry. Clicking on them might lead you to unrelated websites, or you might be taken to a page that aggressively solicits your consent to display additional pop-up ads, banners, and promotional content. One wrong and careless click on the Addonup pop-ups could potentially enable the downloading and installation of other undesirable or malicious software and can pose a risk to your system’s security. Therefore, our advice is to stay away from the aggressive messages that appear on your screen and use the guide below to remove them.

Addonup on Chrome

A browser hijacker can influence a range of web browsers, including widely utilized ones like Chrome, which stands as a highly favored option. Therefore, if you come across Addonup on Chrome, a recommended course of action is to check your system for recently introduced applications and browser extensions that might be contributing to the undesirable alterations in your browser. Should you identify any suspicious or potentially unwelcome elements, such as unfamiliar apps and recently added extensions that don’t contribute positively to your web browsing, it’s advisable to uninstall them. Following this, navigate to your browser settings to manually restore your preferred homepage and default search engine settings. Once you complete these steps, the effects of Addonup on Chrome should be successfully eliminated.

The automatic redirections to websites like come with a spectrum of risks, spanning from minor disruptions to potentially significant dangers. How dangerous a redirect could be depends on the nature and the purpose of the destination sites, as well as the motives of the individuals operating the redirects. Some of these redirects might steer users towards sites that are bothersome, intrusive, or irrelevant, resulting in annoyance. The redirection to could disrupt the browsing experience by inundating users with unwanted ads or pop-ups that provoke irritation. In more concerning scenarios, these redirects could lead users to sites encouraging the download of unnecessary or malicious software that could potentially compromise the security of their systems.


Type Browser Hijacker
Detection Tool

How to Remove Addonup

To try and remove Addonup 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 Addonup extension (as well as any other unfamiliar ones).
  4. Remove Addonup by clicking on the Trash Bin icon next to its name.
  5. Confirm and get rid of Addonup and any other suspicious items.

If this does not work as described please follow our more detailed Addonup 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 Addonup 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 Addonup. 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 Addonup, then select uninstall, and follow the prompts to delete the app.

delete suspicious Addonup apps

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

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.

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    Delete Addonup 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 Addonup changes made to different system settings

    It’s possible that Addonup 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 Addonup

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

    Delete Addonup IPs from Hosts

    Type in the Start Menu: Startup apps

    Disable Addonup startup apps

    Type in the Start Menu: Task Scheduler

    Delete Addonup scheduled tasks

    Type in the Start Menu: Services

    Disable Addonup services

    Type in the Start Menu: Registry Editor

    Press Ctrl + F to open the search window

    Clear the Registry from Addonup items

    Step3 Remove Addonup from your browsers

    • Delete Addonup from Chrome
    • Delete Addonup from Firefox
    • Delete Addonup 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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