Summary
Some users may encounter a pop-up claiming that
Microsoft Windows is infected and instructing them to call a phone number for “Microsoft Support.”
This message is
not legitimate. It is a browser-based scam designed to frighten users into calling a fake support line.
These pop-ups do not mean your device is infected.
What This Is
- A fake security alert displayed through a web browser
- Commonly triggered by malicious ads or unsafe websites
- Often uses Microsoft logos, Windows Defender language, and urgent warnings
- May lock the browser window or play an alarm sound
Microsoft will never:
- Display phone numbers in security alerts
- Ask you to call for virus removal
- Lock your device through a browser window
What You Should NOT Do
- Do not call the phone number shown
- Do not click “Continue,” “Allow,” or similar buttons
- Do not enter passwords or personal information
- Do not install software suggested by the pop-up
How to Fix It (Quick Steps)
Step 1: Close the Browser
If possible:
- Click the X on the browser window
If the window will not close:
- Windows: Press
Ctrl + Alt + Delete→ Task Manager → End Task on the browser - Mac: Press
Command + Option + Escape→ Force Quit the browser
Step 2: Reopen the Browser Safely
- Reopen the browser
- If prompted to restore tabs, choose NO
Step 3: Clear Browser Data
Clear cache and site data for your browser:
- Edge / Chrome / Firefox:
- Settings → Privacy → Clear browsing data
- Clear cached images/files and site data
Step 4: Remove Browser Notification Permissions
Some scam sites trick users into allowing browser notifications, which causes repeated fake virus alerts even after the page is closed.
To fix this:
- Open your browser Settings
- Go to Privacy & Security → Site Settings → Notifications
- Review the list of sites allowed to send notifications
- Remove or block any site you do not recognize
- Close and reopen the browser
Removing unwanted notification permissions usually stops these messages from returning.
Step 5: Run a Security Scan
- Make sure the device is connected to the internet
- Run a full scan using the district-provided security software or Microsoft Defender
If the Message Keeps Returning
Contact the IT Department if:
- The pop-up appears repeatedly
- The browser continues redirecting automatically
- You clicked any buttons or entered information
IT may:
- Remove malicious browser extensions
- Reset the browser profile
- Check for adware or unwanted software
If You Already Called the Number
If you contacted the number or allowed someone remote access:
- Disconnect the device from the network immediately
- Contact the IT Department right away
- Do not use the device until IT confirms it is safe
Key Takeaway
This is a
scare tactic, not a real virus alert.
Closing the browser and clearing data resolves the issue in most cases.
If you are unsure, stop and contact IT. That is always the safest option.