Captcha-verification.systems: what it is and how to remove it
There are plenty of rogue websites all over the internet, and most people had come across at least some of them while browsing the web on Google Chrome, Mozilla Firefox, MS Edge, or any other browser. You can encounter Captcha-verification.systems website after being redirected from another malicious site or after clicking on a suspicious link.
Facts checked October 6, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. 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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Captcha-verification.systems: summary
| Distribution | As soon as users press the "Allow" in the notification prompt. Redirects to such sites might be caused by adware |
|---|---|
| Name | Captcha-verification.systems |
| Type | Push notifications, scam, ads |
| IP address | 103.224.182.250 |
| Symptoms | Intrusive pop-ups show up at any time – these typically include links to scam and other suspicious/malicious websites |
| Dangers | Clicking on links that are embedded within the notification prompt, exploring the sites these links bring to or downloading files can be particularly dangerous |
| Removal | Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged. Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free. |
Show 5 more facts
| Detection names | No Microsoft detection name is known |
|---|---|
| Damage | Not recorded in the old report |
| Evidence | 4 write-ups by security sites; details still limited |
| First seen | 6 August 2021 |
| Facts checked | 6 October 2026 |
Is the Captcha-verification.systems check real?
From our report of Aug 2021 · not reviewed since
- To prevent the site from displaying notifications to you, access the site permission section via your web browser settings
What the Captcha-verification.systems scammers want
From our report of Aug 2021 · not reviewed since
Captcha-verification.systems can start showing unwanted pop-ups on a regular basis
There are plenty of rogue websites all over the internet, and most people had come across at least some of them while browsing the web on Google Chrome, Mozilla Firefox, MS Edge, or any other browser.
You can encounter Captcha-verification.systems website after being redirected from another malicious site or after clicking on a suspicious link. As soon as you enter, you will be presented with a seemingly innocent message - this is used to trick you into allowing the website to send you notifications.
Captcha-verification.systems pop-up is a phenomenon that some users have an unpleasant time with. The notifications might appear at the bottom-right of the screen and include various content - usually links to unknown and untrustworthy websites. If you receive such notifications, you should never click on the promoted links and explore the contents of the destination websites.
Browser redirects can be caused by several things, including a mouse click on an (invisible) link, or your browser might reroute you to another website automatically. Destination websites might be anything - from innocent promotions of legitimate companies to full-blown malicious scripts that might install malware automatically under certain circumstances.
Redirects are very common and might occur due to an error or due to the fact that visitors were unaware that they would be redirected. Due to this, you should always be very careful while browsing the web - avoiding torrents, gambling, porn, and similar high-risk websites can increase your cybersecurity level by a mile.
Unfortunately, unforeseen browser redirects might also be caused by adware, which might have been installed on the user's device without permission. This is because these potentially unwanted programs (PUPs) are commonly spread via software bundles - distributors commonly include several optional components within a single installer and deliberately hide them to make users install something they otherwise would not.
Therefore, if you have spotted Captcha-verification.systems redirects, ads, or pop-ups, there are two things you should take care of:
- Whether or not your machine has adware installed;
- Stop the notifications from being shown via your browser.
From our report of Aug 2021 · not reviewed since
Where are the Captcha-verification.systems pop-ups coming from?
It is important to note that push notifications are a feature that can be found in any modern web browser.
First introduced in 2012, it was meant to be used as a tool to deliver information to users once subscribed. Malicious actors soon realized the feature could be exploited to deliver advertisements and even links to users. All they have to do is use social engineering to make them click the "Allow" button.
Since visitors do not realize they have been tricked, they are often baffled about the intrusive pop-ups that show up on their screens. This is also why many believe that their browsers are infected with a virus (this possibility remains). However, in order to remove Captcha-verification.systems pop-ups, all you have to do is to deny access to this particular URL.
From our report of Aug 2021 · not reviewed since
Google Chrome
- Open Google Chrome browser and go to Menu > Settings.
- Locate Privacy and security section and pick Site Settings > Notifications.
- Look at the Allow section and look for a suspicious URL.
- Click the three vertical dots next to it and pick Block. This should remove unwanted notifications from Google Chrome.
From our report of Aug 2021 · not reviewed since
MS Edge
- Open Microsoft Edge, and go to Settings.
- Select Site permissions.
- Go to Notifications on the right.
- Under Allow, you will find the unwanted entry.
- Click on More actions and select Block.
From our report of Aug 2021 · not reviewed since
Mozilla Firefox
Once you have executed these steps, you should no longer see the pop-ups on your screen.
Due to the nature of the scam, we strongly recommend you proceed with the steps below and check your system further.
- Open Mozilla Firefox and go to Menu > Options.
- Click on Privacy & Security section.
- Under Permissions, you should be able to see Notifications. Click Settings button next to it.
- In the Settings – Notification Permissions window, click on the drop-down menu by the URL in question.
- Select Block and then click on Save Changes. This should remove unwanted notifications from Mozilla Firefox.
From our report of Aug 2021 · not reviewed since
The adware problem and how to take care of it
As previously mentioned, adware could be the reason why your browser is bringing you to scam and other less secure websites.
While adware is not considered to be a type of malware but rather a potentially unwanted program, it does not mean that it is not a security concern.
There has been plenty of widespread adware that caused serious security issues to users. One such example is Lenovo's Superfish scandal when thousands of laptops were shipped with the software pre-installed. As it turned out, the adware was capable of intercepting the secure HTTPS connections and render devices vulnerable to cyberattacks. As a result, the tech giant had to pay out to potential victims and a fine to FTC.
It is impossible to find out whether or not you have your device infected without checking it properly. Adware's main tool is the browser, so it is important to make sure that no suspicious browser extensions are installed on them. Alternatively, you can try to look for installed programs yourself - check the guide below.
Additionally, you should definitely clean your web browsers - you can do that quickly and efficiently with the help of repair and maintenance utility. Otherwise, proceed with the below steps for Chrome (you will find the rest of the browsers below):
Clear cache and web data from Chrome
Change your homepage:
Reset Google Chrome:
If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted components:
If you had clicked on the promoted links when the notifications were showed to you, your device might be infected with malware. Ensure you perform a full system scan and get rid of everything found.
- 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.
- 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.
- Click on Menu and select Settings.
- Now click Restore settings to their original defaults.
- Confirm with Reset settings.
What to do if you ran the Captcha-verification.systems command
Whether you ran the command decides everything else, so the first step checks that.
Step 1: Check whether the pasted command ran
Press Windows + R and click the arrow at the right of the box: it lists the last commands typed there.
A long line starting with
powershell,mshta, cmd or curl means the page's command ran, and it usually downloads a password stealer. If it is there, disconnect from the internet now and do every step below, including the passwords.If the list holds nothing like it, you only saw the page, and closing it was enough. The Run box keeps this history in Windows 11 and Windows 10 alike.
Full procedure with screenshots: Run a Microsoft Defender Offline scan
Step 2: Scan the PC, then run the offline scan
Open Windows Security > Virus & threat protection > Scan options, run a Full scan and remove everything it finds. Then select Microsoft Defender Antivirus (offline scan) and click Scan now: the PC restarts and scans before Windows loads, which finds files that hide while Windows runs.
Save your work first, because the offline scan takes about 15 minutes. Both scans are built into Windows 11 and Windows 10, and a second scanner from another vendor is a useful extra opinion.
Windows 11: Windows Security > Virus & threat protection > Scan options. Full procedure with screenshots: Run a Microsoft Defender Offline scan
Step 3: Change passwords from another device and sign out other sessions
Assume that the passwords saved in this PC's browsers, and the accounts that were open in them, are known to the attacker. From a phone or a clean computer, change the e-mail password first, then banking, shopping, social and gaming accounts.
Use each service's option to sign out of all other sessions, because stolen cookies keep a session open even after a password change. Turn on two-step verification on each account. Wait with the infected Windows 11 or Windows 10 PC until the scans are clean.
Full procedure with screenshots: Turn on two-step verification / secure a hacked account
Step 4: Delete scheduled tasks that bring it back
Open Task Scheduler from the Start menu and click Task Scheduler Library. Select each task you do not recognise and read the Actions tab:
- a task that starts a file in
%AppData%or%Temp% - runs
powershellwith a long encoded line - opens a web address belongs to Captcha-verification.systems or a similar program
Right-click such a task and choose Delete, and check the subfolders too. Leave tasks from Microsoft, your PC's maker and programs you use. Task Scheduler is the same in Windows 11 and Windows 10.
Windows 11: Task Scheduler Library, the task selected, the Actions tab shows the file it runs. Full procedure with screenshots: Remove what malware leaves behind in Windows
- a task that starts a file in
Instructions for each browser and system
The detailed steps for every browser and system this guide covers. Open the one you use.
Uninstall from Windows
Uninstall from Windows 10/8:
- Type Control Panel into the Windows search box and open the result.
- Under Programs, select Uninstall a program.
Uninstall from Windows 7/XP:
- Click on Windows Start > Control Panel (Windows XP users should click on Add/Remove Programs).
- In Control Panel, select Programs > Uninstall a program.
Remove the unwanted program:
- In the Programs and Features window, look for any recently installed suspicious entries, select them, and click Uninstall.
- If User Account Control appears, click Yes to confirm, then complete the removal.
Remove from Microsoft Edge
Delete unwanted extensions from MS Edge:
- Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
- From the list, pick the extension and click on the Gear icon.
- Click Remove.
Clear cookies and other browser data:
- Click on the Menu (three horizontal dots at the top-right of the browser window) and select Settings > Privacy, search, and services..
- Under Clear browsing data, pick Choose what to clear.
- Select Cookies and other site data and Cached images and files. (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.
Restore new tab and homepage settings:
- Click the menu icon and choose Settings.
- Then find On startup section.
- Click Remove next to any suspicious startup page.
Reset MS Edge if the above steps did not work:
- Press on Ctrl + Shift + Esc to open Task Manager.
- Click on More details arrow at the bottom of the window.
- Select Details tab.
- Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running.
Delete extensions from MS Edge (Chromium):
- Open Edge and click select Settings > Extensions.
- Delete unwanted extensions by clicking Remove.
Clear cache and site data:
- Click on Menu and go to Settings.
- Select Privacy, search and services.
- Under Clear browsing data, pick Choose what to clear.
- Under Time range, pick All time.
- Select Clear now.
Reset Chromium-based MS Edge:
- Click on Menu and select Settings.
- On the left side, pick Reset settings.
- Select Restore settings to their default values.
- Confirm with Reset.
- This will disable extensions and reset startup pages but will not delete bookmarks, saved passwords, or browsing history.
Remove from Mozilla Firefox (FF)
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 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
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.
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.
Questions about Captcha-verification.systems
Is the "Captcha-verification.systems" warning from Microsoft?
No. Microsoft and Windows Security never show warnings inside a browser tab, never ask you to call a phone number and never charge for a scan through a web page. The message "Captcha-verification.systems" comes from a website that copies the look of a system alert.
It runs a script that shows the same alarm to every visitor, whatever computer they use. Close the tab, and if it refuses to close, end the browser in Task Manager.
Then check the browser's notification permissions and extensions, because those are the usual reason such a page reopens. If you want to know whether the PC is really clean, open the Windows Security app from the Start menu and run a scan there.
The "Captcha-verification.systems" page made me install something. What now?
Uninstall it first. Open Settings > Apps > Installed apps, sort the list by install date and remove whatever appeared when the page showing "Captcha-verification.systems" told you to install it. Check the browser's extensions as well, since some pages push an extension instead of a program.
Then run a full scan with Microsoft Defender, and an offline scan if anything is found. If the program was a remote-access tool, or if you typed passwords while it was installed, change those passwords from another device and turn on two-step verification. Keep the file name and the page address; they are useful if you report the scam.
Is my phone affected by Captcha-verification.systems?
Not through the PC. A scam page in a Windows browser cannot reach a phone, even if both use the same account. The sign reported, A browser warning that reads "Captcha-verification.systems", happened in a browser on the PC.
Phones can meet similar pages on their own, usually through ads or notifications, and the fix there is the same idea: remove notification permissions and unknown apps. If you used the phone to call a number shown on the page, follow the steps for callers in this guide.
Is my computer infected?
Seeing the page does not mean the PC is infected. You reached it through an ad, a redirect or a notification. Check whether something on the PC sends you there: if the page opens by itself or on every site, look for extensions and notification permissions, and run a scan.
If you downloaded or ran something the page offered, treat the PC as possibly infected and follow the plan. A full scan with Windows Security gives you a clear answer either way.
How do I avoid pages like Captcha-verification.systems?
Keep the browser updated, do not click Allow on notification prompts from sites you do not know, and leave sites that open many pop-ups. Turn on Microsoft Defender SmartScreen in Edge under Settings > Privacy, search, and services, or Safe Browsing in Chrome under Settings > Privacy and security > Security.
Never call numbers, download files or paste commands because a web page told you to. An ad blocker from your browser's official extension store also cuts most redirect ads. Keep Potentially unwanted app blocking on in Windows Security as well.
Will Captcha-verification.systems come back after I close it?
It may, if the thing that opened it is still there. Closing the tab ends that one page, but a notification permission, an extension or an adware program can open A browser warning that reads "Captcha-verification.systems" again later.
Check the browser's notification settings and extensions first, then Installed apps for anything new. If the page does not return within a day or two of normal browsing, you have removed the source. If it does, reset the browser, which clears permissions and settings in one step.
Why does Captcha-verification.systems keep coming back?
Most often because a site has permission to send notifications, and those notifications lead to new scam pages. Remove notification permissions for unknown sites. Other causes are an adware extension, a browser that restores the previous session, or a site you visit often that shows such ads.
If the page appears outside the browser, a program on the PC is responsible; check Installed apps. If you cannot find the source, resetting the browser removes all of these causes at once.
I followed the page's instructions. What should I change first?
Your e-mail password, from another device. E-mail can reset every other account, so it comes first. Then banking and payment accounts, then Microsoft, Google and social media accounts, then everything else that was saved in the browser.
In each account, sign out of all sessions and turn on two-step verification. Do this after disconnecting and scanning the PC, not before, and never from the PC itself until the offline scan is clean. Move crypto to a new wallet created on a clean device as well.
Is it safe to force-close the browser?
Yes. Ending the browser in Task Manager or restarting the PC does not damage Windows or your files, despite what pages like Captcha-verification.systems say. The warning "do not close this window" is part of the scam.
At worst you lose unsaved text in other tabs. After restarting, do not let the browser restore the previous session, because that would reopen the scam page.
If it reopens anyway, open the browser's settings for startup pages and remove the address. Then remove its notification permission if it has one.
Will Fortect remove Captcha-verification.systems?
Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.
For Captcha-verification.systems, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.
Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.
Sources
- Wikipedia: Social engineering (security) (read October 6, 2026)
- BBC: Lenovo fined over Superfish adware-ridden laptops (read October 6, 2026)
- FTC: How to spot, avoid and report tech support scams (read October 6, 2026)
- FTC: How to recognize, remove and avoid malware (read October 6, 2026)
- Microsoft Learn: Microsoft Defender Offline (read October 6, 2026)