Remove Google Chrome Critical Error Scam from Your Computer

The "Google Chrome Critical Error" popup is a tech-support scam, not a real Chrome warning. It locks your tab, plays a siren, and tells you to call a fake support number so the operator can ask for remote access or payment.

This guide walks through how to remove the Google Chrome Critical Error scam from your computer, starting with safely closing the locked tab and ending with a settings reset plus scam-blocking protection.

In this guide, I have covered:

What the Google Chrome Critical Error scam is and how to remove it

ALERT: Alert!: DO NOT call the numbers shown on this popup. If you already called, do not share personal or financial information. The operators sound professional, but it’s a trap.

You clicked a link or opened a page, and now a full-screen “Google Chrome Critical Error” warning is blaring at you. It is not a real Chrome warning. A malicious redirect or shady extension opens a full-page alert claiming your computer is infected, your data is at risk, and you need to call a toll-free number right now. The page locks the tab, plays a loud siren, and may copy Microsoft or Apple logos to look legitimate.

The goal is to get you on the phone with a “technician” who will ask for remote-access permissions, payment for fake repairs, or your card details. Chrome will never ask you to call a phone number to fix an error, and no real Windows, macOS, or Chrome message works that way either.

If you are staring at this popup right now, the steps below walk through how to remove the Google Chrome Critical Error scam from your computer without calling anyone. Work through them in order, and stay offline until you finish the cleanup.

Step 1: Force quit Chrome and cut the connection

You are looking at a locked tab with a siren. Don’t click the X on the popup tab. The page is hijacked, so closing the tab only hides it while the script keeps running, and on some redirects the popup just respawns. The right move is to kill every Chrome process from your operating system, then drop the internet connection before relaunching Chrome.

This step stops the Google Chrome Critical Error by severing the active link between the spammer’s page and your machine.

Force quit Chrome on Windows

1. Open Task Manager on Windows.
2. Right-click each Google Chrome process in the list.
3. Click End task.

On macOS, press Cmd + Option + Esc, pick Google Chrome from the list, and click Force Quit. On Linux, run killall chrome in a terminal.

Disconnect and reboot

1. Turn Wi-Fi off (or unplug the Ethernet cable) before you reopen Chrome.
2. Restart your computer. This clears anything still trying to phone home from memory.
3. Stay offline until you have finished the rest of the cleanup steps below.

Cutting the network first matters. Some variants of the Critical Error scam drop scheduled tasks or notification handlers that re-open the page on the next launch. If the line to the scammer’s server is dead, those payloads cannot reconnect for more instructions.

You’ll know it worked when Chrome is completely closed and your computer is offline before you relaunch it.

Step 2: Clear browsing data, cache, and cookies

The popup may come back if cached scripts and cookies are still on your machine. Many of these popups survive by reloading from cached scripts and stored cookies. Wiping the recent range is usually enough, but if you are not sure when the popup first appeared, select All time to be safe.

Clear the browser history that leads to the spamming script, just in case you visit the same page and get hijacked again. Along with history, also clear the cache and cookies to wipe every trace of the spamming script.

1. Go to chrome://history/clearBrowserData in the address bar.
2. Select the Time range from the drop-down.
3. Enable the checkboxes for Browsing history, Cookies and other site data, and Cached images and files.
   
4. Hit the Clear data button.

You will be signed out of most sites. That is expected. Re-enter passwords only from devices and accounts you control, and only after you are sure the scam is gone.

Step 3: Remove suspicious bookmarks

You may not remember saving that bookmark. The redirect that dropped the scam popup often bookmarks itself so it can reopen later. Any bookmark you don’t recognize, or that points to a long random URL, is a red flag. A fake entry may also rewrite one of your existing bookmarks, so skim the whole list.

Follow these steps to delete the bookmarks:

1. Go to chrome://bookmarks/ to open the Bookmarks Manager page.
2. Click the More menu next to each bookmark or folder.
   
3. Select the Delete command from the list.

Delete every bookmark you did not save yourself. You can re-add the real ones by hand after the cleanup is done.

Step 4: Reset Chrome to its default settings

You have cleared the cache and removed the bookmarks. Now reset Chrome to undo any changes the scam made. Resetting wipes the homepage, search engine, startup tabs, and pinned tabs back to factory defaults, and disables every extension in the process. It is the most thorough step in this guide, so do it before you go back online.

1. Launch the Chrome browser on the computer.
2. Click on the More for menu list, and select the Settings menu.
   It will open the Chrome browser's Settings page.
3. Switch to the Reset settings tab in the left sidebar, and select Restore settings to their original defaults option.
4. Finally, hit the Reset settings command button.
   It will reset the Chrome browser settings, clear temporary data, and disable all extensions.

After the reset, reopen Chrome and confirm your homepage and default search engine are what you expect. If they aren’t, repeat the reset and check for extensions you didn’t install yourself. For a deeper walkthrough, see our guide to resetting the Google Chrome browser.

You’ll know it worked when Chrome opens with your expected homepage and search engine, and no unfamiliar extensions are active.

Step 5: Turn on Enhanced Safe Browsing

You have cleaned Chrome. Now turn on the protection that catches this scam before it loads. Chrome 137 and newer add an on-device AI check that recognizes the “Critical Error / call this number” pattern and shows a full-page “Likely a scam” warning before the page loads. To get that protection, you need Enhanced Safe Browsing turned on. It is also the tier that powers real-time URL checks against Google’s scam list.

1. Open chrome://settings/security.
2. Under Safe Browsing, select Enhanced Protection.
3. Follow any prompts to allow real-time URL checks if Chrome asks.

Enhanced Protection sends the URLs you visit to Google for live checks. It is the strongest tier Chrome offers and the only one that triggers the new scam detector. Leave it on for ongoing protection.

What to do if the popup comes back

The popup came back after you followed every step. That means the scam is coming from outside Chrome. Check Windows Task Scheduler or your macOS Login Items for anything tied to Chrome, run a full scan with your antivirus, and as a last resort use Chrome’s full uninstall and data wipe before reinstalling.

If you already gave the “technician” remote access or card details, change those passwords from a different clean device right now and contact your bank. Treat any account you touched during the call as compromised.

Bottom line

You have removed the popup and secured Chrome. The Critical Error popup is a social-engineering trick, not a real virus. The “free support” number on screen routes to a call center running the same script on every victim. Hang up on them, never give remote access, and walk through the steps above to remove the Google Chrome Critical Error scam from your computer.

After cleanup, leave Enhanced Protection on and keep Chrome updated so the next variant gets caught before it loads. You’ll know it worked when the popup stays gone and Chrome loads normally.