Hi, I'm John! I will help you with this.
What you’re seeing is a scam pop-up, not a real Microsoft message. Microsoft does not lock your computer and ask you to call a phone number.
Do not call the number shown on the screen.
If you haven't tried anything yet please start by:
Closing browser affected by scam pop-up:
- Press Ctrl + Shift + Esc to open Task Manager.
- Look for your browser (Edge, Chrome, etc.).
- Click it, then choose End Task.
If that doesn’t work:
- Press and hold the Power button for about 10 seconds to force shut down.
- Turn the PC back on after 30 seconds.
After restarting:
- Open your browser.
- If it asks to restore previous tabs, choose No.
- Clear your browser history and cache.
Run a full antivirus scan on your computer using Windows Security and any third-party antivirus software you have.
Run a full deep scan using a trusted security tool:
- Download and run Microsoft Safety Scanner here: https://learn.microsoft.com/defender-endpoint/safety-scanner-download
- After running the scan, please restart your PC and monitor whether the issue continues.
I really hope this information is helpful! Let me know if you have any further questions or concerns.
Regards,
John J.D.