This update requires an action ads: what it is and how to remove it
"This update requires an action" is a fraudulent pop-up message targeting Mac users. It typically appears on the Safari browser and claims that an update is mandatory for the system.
Facts checked October 6, 2026. Removal steps checked against Apple's current documentation and the security vendors' reports. We have not run the malware on a Mac. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.
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This update requires an action ads: summary
| Distribution | In most of the cases, users infect their Macs with adware or malware when they agree to install applications from third-party sources (especially those that host cracked software) or when they get tricked by fake updates or other bogus alerts |
|---|---|
| Name | This update requires an action |
| Type | Mac malware |
| Sub-type | Adware/PUP |
| Targeted systems | The unwanted notification is targeting MacOS |
| Targeted browsers | Mostly, Safari is affected by this PUP, but we cannot exempt the possibility that it might occur on other web browsers such as Chrome, Firefox, etc. |
| Removal | Scan the Mac with security software to find the malware and anything installed with it. Fortect for Mac scans for malware and unwanted programs. Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free. |
Show 10 more facts
| Potential danger | Users might install other potentially unwanted software or even malware on their devices, disclose personal information to cybercriminals, etc. |
|---|---|
| Detection names | No Microsoft detection name is known |
| Damage | Not recorded in the old report |
| Symptoms | Redirects to an unknown domain |
| Evidence | 6 write-ups by security sites; details still limited |
| Domains | novirus.uk |
| Ads shown as | Redirects through ad pages |
| Browsers | Chrome, Edge and Firefox |
| First seen | 11 November 2019 |
| Facts checked | 6 October 2026 |
Is This update requires an action ads dangerous?
From our report of Nov 2019 · not reviewed since
This update requires an action is a fake alert seeking to infect Mac users with Potentially unwanted programs
"This update requires an action" is a fraudulent pop-up message targeting Mac users.
It typically appears on the Safari browser and claims that an update is mandatory for the system. It typically keeps reappearing and interrupting the user's activity on the system. The message is related to adware which drops numerous executable files on the computer, Users/Shared folder. If not ignored, it can lead to the infiltration of Chill Tab, Tapufind, and other PUPs.
While in some cases users might encounter This update requires an action pop-up when visiting an insecure website, in most of the cases, persistent pups indicate that Mac is already infected with adware. Therefore, the fake notification can be removed by fixing the web browser by resetting it. However, to ensure that no PUPs have been installed yet, run a full system scan with the security software.
It is yet not clear which application installed on macOS is causing the particular This update requires an action alert, but users should definitely not ignore it. The infection might become nastier tas the installation of apps without permission is a typical sign of more severe parasites, such as Trojans or RATs.
This update requires an action pop-up claims the following:
As evident, the claims posted on the message are entirely fake, and the pop-up does not shut itself down within 60 seconds. In fact, users have reported that the issue becomes extremely persistent, and it is only possible to shut down This update requires action after opening Activity Monitor and killing the process of the browser.
This update requires an action is a bogus Mac security alert that might also ask you to contact fake tech support. If you receive any kind of offer for cleaning/securing/investigating your computer system, do not take it as you might put yourself in significant danger. If you have been experiencing any system problems recently, better reach out to a reliable Mac expert.
This update requires an action Mac virus might bring other suspicious activities to your computer as it is usual for an ad-supported application. The main goal of adware developers is to push their apps for income purposes. Usually, these people gather revenue from clicks that are made on their pop-up notifications or by sharing collected browsing data with other parties.
The pay-per-click technique is the most popular method used for collecting money between adware developers. This variant works within every click that is made on the ads provided. However, be careful as "This update requires an action" as it might push some bogus offers straight to your computer system and try to convince you to purchase useless products.
Do not take any deals or offers that come from This update requires action as you will only face unnecessary financial losses. Additionally, do not type in any surveys and questionnaires that might come from this suspicious app as you might be urged to enter personal information that might get exposed all over the Internet in the upcoming future.
The second monetization method from promoting This update requires an action virus is gathering information about your browsing activities. Adware programs often plant tracking cookies or beacons for spying on your online activities. Later on, the collected data might be passed on to other parties or used for creating targeted ads. Adware authors usually harvest the following information (which sometimes might be personal):
We suggest using to scan the entire computer system for suspicious entries added to your computer system. Once you find all of the questionable content that has been hiding on your machine, you can remove This update requires an action properly. Also, check the end of the article where you will find manual removal guidelines for this PUP.
- IP address;
- Computer technical data and installed apps;
- Visited websites;
- Links clicked;
- Bookmarks added;
- Geo-location;
- Search queries, etc.
From our report of Nov 2019 · not reviewed since
More from our earlier report on This update requires an action
- The best way to get rid of all unwanted components is to use anti-virus software.
- Once you are done, eliminate virus damage by using
- This Update requires an action: Please check the box to complete the update If you do nothing, this message will be closed automatically in 60 seconds.
Check your browser and PC
- Address:
novirus.uk
How to remove This update requires an action ads
How to remove This update requires an action from a Mac
Remove the app and what starts it, then check the browsers.
Step 1: Delete apps and downloads you did not intend to install
Open the Applications folder and your Downloads folder.
Drag any app you did not install, and any disk image (
.dmg), installer (.pkg) or archive (.zip) that came from This update requires an action or a site you do not trust, to the Bin, then empty the Bin.Also check
~/Library/Application Supportfor a folder with the same name as the app you removed.Step 2: Remove unknown login items and background items
Open System Settings > General > Login Items & Extensions. Under Open at Login and Allow in the Background, switch off or remove anything you do not recognize, especially items whose developer is shown as an unknown name or that appeared on the day you ran the command.
Then open Finder, choose Go > Go to Folder and check
~/Library/LaunchAgents,/Library/LaunchAgentsand /Library/LaunchDaemons for property list (.plist) files you did not add. Drag suspicious ones to the Bin, then restart the Mac.Step 3: Check the browsers for extensions and changed settings
In Safari open Settings > Extensions and General (homepage). In Chrome open
chrome://extensions, in Firefoxabout:addons.Remove any extension you did not add, and reset the homepage and search engine if they changed. Browsers hold saved passwords and cookies, which is why the password step comes first.
Step 4: Quit what is running that you do not recognize
Open Activity Monitor (in Applications > Utilities, or search for it with Command + Space).
In the CPU or Network tab, look for a process you did not install or whose name is random, select it, click the stop button (the octagon with an X) and choose Quit or Force Quit.
Note the name first: you will look for the same name in the next steps. Malware that comes back after a restart is handled in the next two steps.
Instructions for each browser and system
The detailed steps for every browser and system this guide covers. Open the one you use.
Remove from Google Chrome
Google Chrome can be reversed back to its previous state if you follow our below-given instructing steps:
Delete malicious extensions from Google Chrome:
- Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
- In the newly opened window, you will see all the installed extensions. Uninstall all suspicious extensions related to the unwanted program by clicking Remove.
Clear cache and web data from Chrome:
- Click on Menu and pick Settings.
- Under Privacy and security, select Clear browsing data.
- Select Browsing history, Cookies and other site data, as well as Cached images and files.
- Click Clear data.
Change your homepage:
- Click menu and choose Settings.
- Look for a suspicious site in the On startup section.
- Click on Open a specific or set of pages and click on three dots to find the Remove option.
Reset Google Chrome:
If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted components:
- Click on Menu and select Settings.
- In the Settings, scroll down and click Advanced.
- Scroll down and locate Reset and clean up section.
- Now click Restore settings to their original defaults.
- Confirm with Reset settings.
Remove from Mozilla Firefox (FF)
You can clean Mozilla Firefox from questionable products and reverse unwanted changes with the help of these guidelines:
Remove dangerous extensions:
- Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
- Select Add-ons.
- In here, select the unwanted extension and click Remove.
Reset the homepage:
- Click three horizontal lines at the top right corner to open the menu.
- Choose Settings.
- Under Home, set your preferred homepage and new tab settings.
Clear cookies and site data:
- Click Menu and pick Settings.
- Go to Privacy & Security section.
- Scroll down to locate Cookies and Site Data.
- Click on Clear Data...
- Select Cookies and Site Data and Temporary cached files and pages, then click Clear.
Reset Mozilla Firefox
If clearing the browser as explained above did not help, reset Mozilla Firefox:
- Open Mozilla Firefox browser and click the Menu.
- Go to Help and then choose Troubleshooting Information.
- Under Give Firefox a tune up section, click on Refresh Firefox...
- Once the pop-up shows up, confirm the action by pressing on Refresh Firefox.
Delete from Safari
Remove all bogus extensions and plug-ins from your Safari web browser. Use these instructions for help:
Remove dangerous extensions:
- Open Safari, click Safari in the menu at the top-left of the screen, and select Preferences.
- Go to the Extensions tab, look for any suspicious entries, and click Uninstall to remove them.
Clear history and website data:
- Click Safari in the menu and pick Clear History.
- Set Clear to all history and confirm with Clear History.
Reset Safari:
- Click Safari in the menu and select Preferences > Advanced.
- Enable Show Develop menu in menu bar.
- From the menu bar, click Develop and select Empty Caches.
Delete from macOS
Eliminate the adware program from your Mac OS X computer system by following the below-provided instructing lines:
Remove the unwanted application:
- From the menu bar, select Go > Applications.
- In the Applications folder, look for any suspicious entries, then drag them to Trash (or right-click and pick Move to Trash).
Delete leftover files and folders:
- Select Go > Go to Folder.
- Enter /Library/Application Support and remove any suspicious folders related to the unwanted program.
- Repeat the same check in the /Library/LaunchAgents and /Library/LaunchDaemons folders, deleting any suspicious entries.
- Finally, empty the Trash to permanently remove the leftovers.
Reset Internet Explorer
If you have found out that your Explorer web browser app is filled with bogus components, terminate them by completing the following:
Remove dangerous add-ons:
- Open Internet Explorer, click on the Gear icon (IE menu) on the top-right corner of the browser
- Pick Manage Add-ons.
- You will see a Manage Add-ons window. Here, look for suspicious plugins. Click on these entries and select Disable.
Change your homepage if it was altered:
- Open IE and click on the Gear icon.
- Select Internet Options.
- In the General tab, delete the Home page address and replace it by your preferred one (for example, Google.com).
- Click Apply and then select OK.
Delete temporary files:
- Press on the Gear icon and select Internet Options.
- Under Browsing history, click Delete...
- Select relevant fields and press Delete.
Reset Internet Explorer:
- Click on Gear icon > Internet options and select Advanced tab.
- Select Reset.
- In the new window, check Delete personal settings and select Reset.
Stream videos without limitations, no matter where you are
There are multiple parties that could find out almost anything about you by checking your online activity.
While this is highly unlikely, advertisers and tech companies are constantly tracking you online. The first step to privacy should be a secure browser that focuses on tracker reduction to a minimum.
Even if you employ a secure browser, you will not be able to access websites that are restricted due to local government laws or other reasons. In other words, you may not be able to stream Disney+ or US-based Netflix in some countries. To bypass these restrictions, you can employ a powerful VPN, which provides dedicated servers for torrenting and streaming, not slowing you down in the process.
Data backups are important - recover your lost files
Ransomware is one of the biggest threats to personal data.
Once it is executed on a machine, it launches a sophisticated encryption algorithm that locks all your files, although it does not destroy them. The most common misconception is that anti-malware software can return files to their previous states. This is not true, however, and data remains locked after the malicious payload is deleted.
While regular data backups are the only secure method to recover your files after a ransomware attack, tools such as can also be effective and restore at least some of your lost data.
From our report of Nov 2019 · not reviewed since
Learn about necessary precautionary steps towards PUP prevention
Specialists from NoVirus.uk claim that if you take online safety steps seriously, you have a great chance of avoiding secret infiltration of adware programs, browser hijackers, plug-ins, and other bogus content. Here are the places where you are likely to meet potentially suspicious applications, and that should always be avoided:
In order to secure your incoming downloads, you should opt for the Custom/Advanced installation mode and avoid Quick/Recommended configuration as here your downloads will be completed automatically and you will not have the chance of deselecting all rogue products that you do not want to see on your machine.
In addition, you should think about automatic protection also. Securing your computer system with a reliable anti-malware program is necessary if you want to protect your machine at a higher level. Make sure that you choose an expert-tested piece of software and keep it regularly updated whenever new updates are released.
- Free software packages. Be aware of sources that offer free downloads of particular software as they do not fit the needed security requirements. Also, avoid installing cracked products as they might carry bogus/potentially malicious payload.
- Third-party services. If you are a frequent visitor of online-dating, gambling, gaming, and similar websites, note that there is a risk of getting a PUP secretly installed on your computer system through bogus links and adverts.
From our report of Nov 2019 · not reviewed since
The termination process of This update requires an action infection
There are two ways which will help you to remove This update requires an action from your computer system and web browser.
You can employ reputable anti-malware products for completing this process. The software will carry out the entire process in a few minutes of time and ensure that all infection sources are permanently cleaned.
However, if you think of yourself as an experienced computer user, you can perform the This update requires an action removal process with the help of our manual instructions.
We have provided detailed steps at the end of this article that will you to erase all bogus products from macOS and infected browser apps. Before proceeding with this method, however, you should check the following folders for suspicious entries and eliminate them:
- /Library/LaunchAgents
- /Library/Application Support
- /Library/LaunchDaemons
Questions about This update requires an action ads
novirus.uk opens when I click links. What causes it?
When every click leads to novirus.uk first, an extension or a script on the page is rewriting the links. If it happens only on one site, that site uses aggressive ads; close it and use another source. If it happens everywhere, open the browser in a private window, where extensions are normally off, and try again.
No redirect in the private window means one of your extensions is responsible: remove the ones you do not know. A redirect in the private window too means the cause is outside the extensions, such as a notification permission, a changed search setting or a program installed on the PC. The removal steps in this guide cover each of those.
Should I worry about redirects to novirus.uk?
Worry less about novirus.uk itself and more about what keeps sending you there. A single redirect from a free streaming or download site is normal and harmless once the tab is closed.
Repeated redirects on sites that used to work fine mean something in the browser or in Windows changed, often an extension or program installed alongside other software. It may also collect the pages you visit. Remove the cause with the steps in this guide, and do not act on anything the redirected pages ask:
- no Allow clicks
- no downloads
- no calls
If you already did one of those, the matching section of this guide explains what to do next.
What is This update requires an action?
This update requires an action is an adware extension, a kind of adware. It earns money by showing redirects through ad pages, and each view, click or redirect pays whoever runs it. It is not something people usually choose; it arrives through a free download, a fake button or a misleading prompt.
This update requires an action does not encrypt files or take control of Windows, but its ads are sold to anyone, including scam operators, so they can lead to fake virus warnings and unwanted downloads. The steps in this guide remove it from Windows and from each browser.
Which browsers does This update requires an action affect?
In the cases we checked, This update requires an action showed up in Chrome, Edge and Firefox. That does not rule out others on your PC, since adware installers often target every browser they find, and permissions and extensions sync across computers signed in to the same browser account.
Open each browser you have, go to its extensions page and its notification settings, and remove anything you do not recognise. Profiles count separately: Chrome and Edge can each hold several, and each one needs checking on its own.
Are the pop-ups I see really from This update requires an action?
Compare them with the details in the table above. This update requires an action produces redirects through ad pages, and the clearest sign of it is redirects to novirus.uk.
Other adware looks similar, so check the name of the sending site at the bottom of a notification, the address in the tab that opened, or the newest entries on the extensions page.
If those match, this guide fits. If you see a different name, the same kind of steps apply, but remove the item you actually find rather than guessing.
Why is my browser so slow since the ads started?
Each page now does extra work. An adware extension reads the page, decides where to put ads, loads them from ad servers and reports your visit, and that happens on every tab. Ad-supported programs add their own background activity.
Removing the extension or program usually makes the browser fast again at once. If it stays slow, open the browser's own task manager with Shift+Esc in Chrome or Edge and look for extensions using a lot of memory or processor time.
Did This update requires an action collect my data?
Adware typically collects what it needs to choose ads:
- the sites you visit
- search terms
- approximate location
- browser and system details
Extensions with permission to read and change data on all websites can technically see everything on those pages, including forms. That is a privacy problem rather than proof of theft.
If you typed card details or passwords while it was active, changing the most important passwords is a reasonable precaution. Clearing cookies after removal ends the tracking sessions it may have started.
My scan found nothing, but the ads continue. Why?
Because the source may not be a file a scanner looks for. Browser notifications are a permission stored in the browser, and many adware extensions are not flagged because they come from an official store.
Some ad-supported programs are only reported if you enable detection of potentially unwanted apps. So a clean scan does not mean the job is done. Check each browser's notification permissions and extension list by hand, and turn on Potentially unwanted app blocking in Windows Security before scanning again.
I let a "support technician" from an ad connect to my PC. What should I do?
Act quickly but calmly. Disconnect the PC from the internet first, so the connection ends. Uninstall the remote access tool they asked you to install and check Installed apps for anything else added during the call.
Run a Microsoft Defender full scan and offline scan. From another device, change your e-mail and banking passwords and sign out of all sessions.
If you paid by card, bank transfer or gift card, contact your bank or the card issuer immediately, and report the scam to the police. Do not answer if they call back.
Will Fortect remove This update requires an action?
Fortect for Mac scans for malware and unwanted programs, and its free scan shows what it finds on your Mac before you decide anything.
For This update requires an action, follow the plan on this page as well: removing a launch item or an app is done in macOS itself, and a scanner cannot undo what was typed or entered on the infected Mac, such as saved passwords that were copied.
Change your passwords from another device first, and if the page tells you to erase the Mac, a scan is not a substitute. The free scan costs nothing and the full-featured product needs a license.
Sources
- Reddit: "This update requires an action" Safari, Mac OS, Mojave (read October 6, 2026)
- Wikipedia: Targeted advertising (read October 6, 2026)
- Search Security: PUP (potentially unwanted program) (read October 6, 2026)
- Google Chrome Help: Use notifications to get alerts (no longer online) (read October 6, 2026)
- FTC: How to recognize, remove and avoid malware (read October 6, 2026)