Account Security Problems

How to Fix Windows Defender Security Center Phone Scam Pop-Up

Huda Qurayshi Oct 9, 2026 868 views

Question details

Users are experiencing a fake Windows Defender alert in their web browser prompting them to call a fraudulent support number like 833-835-3827.

How to Fix the Windows Defender Security Center Phone Scam Pop-Up

Product: Windows Security
Device & OS: Windows
Scenario: While browsing the internet, a sudden, persistent notification or full-screen message appears claiming the computer is infected and requires immediate technical support.
Observed behavior: A fraudulent pop-up locks or hides browser controls, displaying fake malware alerts and urging the user to call a provided phone number to resolve the issue.

Before you start

Do not panic, do not click on any links within the pop-up, and absolutely do not call the phone number provided, as this is a fraudulent technical support scam designed to steal your information.

Solution 1Recommended

Force Close the Fraudulent Browser Pop-Up

Use keyboard shortcuts or the Task Manager to safely bypass the fake alert without interacting with the malicious webpage.

Because these scam sites often use scripts to disable the normal exit buttons or lock your browser into full-screen mode, clicking anywhere on the page can be risky. Forcing the browser to close using system commands is the safest method to escape the pop-up.

Use Keyboard Shortcuts

Press Alt + F4 (or Esc) on your keyboard to instantly close the active browser window containing the scam message.

Open Task Manager

If the window refuses to close, press Ctrl + Alt + Delete simultaneously and select 'Task Manager' from the security screen.

End the Browser Process

In the Task Manager's 'Processes' tab, locate your web browser (e.g., Google Chrome, Microsoft Edge), right-click on it, and select 'End task' to force it to shut down entirely.

Force Close the Fraudulent Browser Pop-Up

Avoid Restoring Pages: When you reopen your browser, it may ask if you want to 'Restore pages' from the previous session. Decline this prompt to prevent the scam pop-up from reloading.

Solution 2

Remove Suspicious Browser Notification Permissions

Clear unwanted site notifications in your web browser to prevent the scam alerts from reappearing.

Solution 3

Run a Full Windows Security Scan

Ensure your computer is completely free from any residual malware or unwanted programs using built-in Windows tools.

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Frequently Asked Questions

What happens if I called the number on the Windows Defender pop-up?

If you called the scam number, hang up immediately. If you granted the scammers remote access to your PC or provided payment information, contact your bank to block any transactions, uninstall any remote access software they directed you to download, and run a full antivirus scan.

Is the Windows Defender Security Center warning real?

No. If the warning appears inside your web browser and instructs you to call a phone number, it is a fraudulent tech support scam. Genuine Microsoft error messages and Windows Defender alerts never include a phone number to call.

How did this scam pop-up get on my computer?

These fake alerts are typically encountered by visiting compromised websites, accidentally clicking on malicious advertisements, or allowing push notifications from untrusted sources. Seeing the pop-up does not necessarily mean your PC is infected with a virus.

Will using secure software like WPS Office prevent these pop-ups?

Browser pop-up scams are isolated to your web browser. Using secure, dedicated desktop software like WPS Office ensures that your document editing environment remains completely safe, ad-free, and fully compatible with Microsoft formats without relying on vulnerable web environments.

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