Critical ERROR scam (Red screen virus)

Critical ERROR virus is a tech support scam campaign that aims to trick people into revealing their personal details

Examples of Critical ERROR scam

Critical ERROR is a scam that has nothing to do with Microsoft. This red screen message has been used to scare people about invented problems on Google Chrome, Microsoft Edge, Mozilla Firefox, and other web browsers. While trying to mislead users into thinking that their personal information is in danger, scammers display a red screen error that shows up on the screen while they browsing the Internet. Please, do NOT fall for Google Chrome critical error and similar scams because they belong to scammers who will do their best to steal your money, credit card details, and other personal information or infect your PC with malware.

Name	Critical ERROR scam
Type	Tech support scam/virus
Versions appear in	Google Chrome; Microsoft Edge; Mozilla Firefox; Internet Explorer.
Symptoms	Causes a red warning message on the affected browser, which reports about the risk of identity theft. Pushes victim into contacting certified Microsoft's technicians who are all fake
Numbers used by this scam	+1(888)-780-0587; +1(800)-757-326; +1(888)-562-5234; +1(877)-556-6888; +1(877)-777-8951
removal	Use anti-malware tools to check the system for adware-type viruses causing the fake error messages on your screen
repair	Various changes and alterations were done to preferences and settings on the system can lead to issues with the performance. Run Fortect Intego to find and repair any occurred damage

Users might become victims of the tech support scam^[1] while they are browsing on infected or high-risk websites. However, if the browser continuously opens a new tab or window with this site, it’s definitely caused by the potentially unwanted program (PUP), usually adware.

The Critical ERROR red screen virus is designed to redirect users to a corrupted website that delivers a message warning about computer infection and urges them to call a provided phone number. Criminals might pretend to be official Microsoft support technicians and:

sell you useless security software to get your credit card information;
convince you into installing remote access software to solve the problem quicker;
download malware, ransomware,^[2] or spyware into your computer.

Scammers are great in human psychology and can use social engineering perfectly. Thus, you may not notice how you follow their demands and give everything they ask for. For this reason, you should not call them even for fun. If redirects continue, you should take all necessary measures to remove the virus from the device.

In order to clean the computer quickly and without putting too much effort, you should take advantage of professional anti-malware software. Anti-malware such as SpyHunter Combo Cleaner, Malwarebytes Malwarebytes is a perfect choice for Critical ERROR removal.

Image of Critical ERROR scam

Versions of Critical ERROR scam

Mozilla Firefox Critical ERROR. This version of the tech support scam is designed to trick Firefox users that their personal data is in danger. The malicious website delivers a fake authentication box that requires entering a username and password. However, none of your current credentials will work. It’s trickery that is supposed to convince you into calling a fake support line.

Crooks are known for using +1 (877) 556-6888 and +1 (877) 777-8951 numbers. The message itself might also provide an error code. Currently, it delivers system errors 0xKB1546764 and 0xKB6301092. However, none of them are real, and calling provided number is not recommended.

Internet Explorer Critical Error. IE users might be tricked that their computers are infected with RDN/Trojan.worm![rand]. In order to protect their passwords, browsing-related information, browsing history, identity, and credit card information from being exposed or sold, users have to call +1 888 780 0587.

However, this number does not belong to Microsoft Technical Support, as the message says. Therefore, the call might be expensive (even if it says it’s toll-free), crooks might actually swindle your sensitive data, money, or get access to your computer.

MS Edge affected by scam

Microsoft Edge Critical ERROR. Cybercriminals pretend to be official Microsoft technicians that report about detected viruses on the computer. This alleged system error also asks to call a toll-free number 1-844-734-4622 in order to get needed help to fix the computer.

However, Microsoft does not deliver security alerts on Microsoft Edge. Thus, this pop-up is created by cybercriminals that have hidden purposes, such as selling you useless security software or getting remote access to your PC, and installing malware.

Google Chrome Critical Error. Chrome is the most popular web browser, so there's no surprise that Chrome users can receive a Critical Error alert too. This version of the tech support scam barely differs from the previous ones. Scammers threaten that user's private information might be in danger, and they need to call + 1 (888) 562-5234 phone number to get needed help.

However, redirects to a malicious website that delivers a fake critical error pop-up are usually triggered by adware. Thus, users are advised to check the computer’s security and eliminate the potentially unwanted program to stop this activity. Hence, calling a fake “Help Desk” won't help to solve the problem.

Google Chrome fake critical error

Users fall into installing adware because of a lack of attention

As you already know, various adware programs might be responsible for redirecting to the Critical system ERROR scam websites. Infiltration of the PUP might seem mysterious. However, security experts from the UK, Germany,^[3] and the U.S. report that there’s no mystery; it’s only a deceptive software marketing method known as bundling.

It allows adding the PUP into the freeware or shareware package. Therefore, when a user downloads a program, he or she might install it as well. The hijack might be unexpected if you use a Standard/Recommended setup because it does not openly disclose about third-party apps. Thus, you should never rely on them.

Always install new software under Advanced/Custom settings and opt-out of all pre-selected applications. Most of them are useless, and you should not test out them.

Get rid of Critical ERROR virus from your browsers entirely by using a simple guide

To remove the virus from Internet Explorer, Microsoft Edge, Mozilla Firefox, or Google Chrome might seem like a simple task. However, you will have to find all PUPs, hijackers, and adware hiding on your system and causing fake ads while you are browsing the web. Typically, such threats infiltrate systems together with legitimate software, so there is no surprise that you can't remember downloading such a virus to your computer.

If you want to fasten the entire process, we recommend using anti-malware software. Updated security software can not only take care of Critical ERROR removal. It can also help you identify and terminate all PUPs that are considered to be suspicious. After you finish this procedure, make sure you reset your web browsers to clean them entirely.

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.

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.

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.

Instructions for Chromium-based Edge

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.

Remove from Google Chrome

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.

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.