Mac Virus

“This update requires an action”

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading ComboCleaner 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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More information about ComboCleaner and steps to uninstall. Please review ComboCleaner's EULA and Privacy Policy. Keep in mind, only ComboCleaner’s scanner is free. If it detects a malware, you'll need to purchase its full version to remove it.

“This update requires an action”

A number of users have recently contacted our “How to remove” team with a request to help them remove a browser hijacker application named “This update requires an action” from their computers. As per the information about “This update requires an action”, this application is a source of some potentially unwanted browser changes.

Popular and widely-used browsers like Safari,Chrome, Firefox and others are the usual target and what happens when this app gets installed in them is that the browser’s homepage URL or search engine get replaced with some sponsored ones. Other changes that most of the users notice include the aggressive generation of various commercial messages (such as ads, pop-ups, banners and page-redirect links) on every webpage they visit. The activities described above are normally related to representatives f the browser hijacker software family. They are not intended to cause harm or to infect you with some nasty viruses or malware (like Ransomware, Trojans, Rootkits, etc.). Instead, their purpose is to make you click on some sponsored domains and offers and visit some predefined pages. Typically, most of the ads that applications like “This update requires an action” display are linked to pay-per-click remuneration models, which generate income for the owners on a pay-per-click or pay-per-visit basis. This is not something illegal and many online advertisers and vendors rely on such applications to “hijack” the users’ browsers for their promotional campaigns. However, the random page-redirects and intrusive ad pop-ups may oftentimes cause irritation to the web users and may prevent them from using the hijacked browser normally. If you are experiencing the same disturbance, the chances are that your browsing app might have been hijacked by “This update requires an action”. The good news is that you no longer need to wonder how to remove its ads and uninstall its changes. In the removal guide below, you will find everything that you need to effectively eliminate the browser hijacker from your system.

Can “This update requires an action” be considered as a harmful application?

The Internet is full of nasty viruses, malicious applications and sneaky computer threats. That’s why it is natural to question every new application that appears on your system and starts to impose some unwanted changes which you have not approved. To your relief, however, “This update requires an action” does not belong to any malware category and is in no way as harmful as a Trojan Horse, a Ransomware or a sneaky Spyware program. At its worst, such a browser hijacker can spam your screen with nagging advertisements and make you click on some sponsored pay-per-click links that may not really be reliable. Some people may call “This update requires an action” a virus but this is mostly due to a lack of understanding about the ad-generating nature of the application rather than due to the presence of some actual malicious feature that it possesses. Still, if you have the chance to uninstall the hijacker from your system, it is advisable to do so because its attempts to expose you to different sponsored commercials may become really aggressive in the long run. It is not excluded that you may frequently land on useless, irrelevant or misleading content and waste a lot of precious time trying to remove various pop-ups, blinking boxes and banners from your screen not to mention that not all adverts that you can see on the Internet are safe and reliable.


Name “This update requires an action”
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Your screen may frequently get flooded with various page-redirect links, ads and pop-ups.
Distribution Method Browser hijackers typically spread with the help of program bundling, torrents, free downloads, ads and spam. 
Detection Tool

Remove “This update requires an action” 


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 ComboCleaner to see if it can detect parasite files for you.

The first thing you need to do is to Quit Safari (if it is opened). If you have trouble closing it normally, you may need to Force Quit Safari:

You can choose the Apple menu and click on Force Quit.

Alternatively you can simultaneously press (the Command key situated next to the space bar), Option (the key right next to it) and Escape (the key located at the upper left corner of your keyboard).

If you have done it right a dialog box titled Force Quit Applications will open up.

In this new dialog window select Safari, then press the Force Quit button, then confirm with Force Quit again.

Close the dialog box/window.



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 ComboCleaner
a professional malware removal tool.

More information on ComboCleaner, steps to uninstallEULA, and Privacy Policy.

Start Activity Monitor by opening up Finder, then proceed to activity-monitor

Once there, look at all the processes: if you believe any of them are hijacking your results, or are part of the problem, highlight the process with your mouse, then click the “i” button at the top. This will open up the following box:


Now click on Sample at the bottom:


Do this for all processes you believe are part of the threat, and run any suspicious files in our online virus scanner, then delete the malicious files:

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Maximum file size: 128MB.

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Scan Results

Virus Scanner Result


The next step is to safely launch Safari again. Press and hold the Shift key while relaunching Safari. This will prevent Safari’s previously opened pages from loading again. Once Safari is opened up, you can release the Shift key.

On the off chance that you are still having trouble with scripts interrupting the closing of unwanted pages in Safari, you may need to take some additional measures.

First, Force Quit Safari again.

Now if you are using a Wi-Fi connection turn it off by selecting Wi-Fi off in you Mac’s Menu. If you are using a cable internet (Ethernet connection), disconnect the Ethernet cable.


Re-Launch Safari but don’t forget to press and hold the Shift button while doing it, so no previous pages can be opened up. Now, Click on Preferences in the Safari menu,

Preferences in Safari

and then again on the Extensions tab,

extensions in safari

Select and Uninstall any extensions that you don’t recognize by clicking on the Uninstall button. If you are not sure and don’t want to take any risks you can safely uninstall all extensions, none are required for normal system operation.

The threat has likely infected all of your browsers. The instructions below need to be applied for all browsers you are using.

Again select Preferences in the Safari Menu, but this time click on the Privacy tab,
Privacy in Safari

Now click on Remove All Website Data, confirm with Remove Now. Keep in mind that after you do this all stored website data will be deleted. You will need to sign-in again for all websites that require any form of authentication.

Still in the Preferences menu, hit the General tab

General Tab in Safari

Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
Default Home Page

Select the History menu this time, and click on Clear History. This way you will prevent accidentally opening a problematic web page again.

firefox-512 How to Remove “This update requires an action” From Firefox in OSX:

Open Firefoxclick on mozilla menu (top right) ——-> Add-onsHit Extensions next.

pic 6

The problem should be lurking somewhere around here –  Remove it. Then Refresh Your Firefox Settings.

chrome-logo-transparent-backgroundHow to Remove “This update requires an action” From Chrome in OSX:

 Start Chrome, click chrome menu icon —–>More Tools —–> Extensions. There,  find the malware and  select  chrome-trash-icon.

pic 8

 Click chrome menu icon again, and proceed to Settings —> Search, the fourth tab, select Manage Search Engines.  Delete everything but the search engines you normally use. After that Reset Your Chrome Settings.

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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