Microsoft security Lockup

Question

A Microsoft Support Security has locked my computer! How do I talk to someone to fix this TODAY?

Answer 1

Hi, I'm John! I will help you with this.

If your computer is showing a message claiming that "Microsoft Support" or "Microsoft Security" has locked your computer, it may be a scam pop-up rather than an actual Microsoft lock.

1. What exactly does the message say? Are you able to close the window or restart the computer?
2. Is this happening in a web browser (Edge, Chrome, etc.) or before Windows signs in?

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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.

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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.

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I really hope this information is helpful! Let me know if you have any further questions or concerns.

Answer 2

If the “Microsoft Support Security” lock appeared after clicking a link or suddenly in the browser with a phone number to call, it is almost certainly a tech support scam and not a real Microsoft lock.

Do the following immediately:

1. Close the scam page
   • If it is in a browser, press ALT+F4 to close the browser window.
   • If that fails, restart the computer.
2. Do not call any phone number shown on the screen
   • Real Microsoft error messages never include phone numbers to call.
   • Microsoft and other legitimate tech companies do not cold call or pop up numbers asking to fix the device.
3. Scan for malware
   • After restart, run your installed antivirus or Microsoft Defender to check for malware.
4. Contact Microsoft only through official channels
   To talk to a real person, use official Microsoft support, not numbers from pop‑ups:
   • Go to Microsoft Support or Global Customer Service using the official links from Microsoft documentation.
   • From there, choose the product (Windows) and use chat, call back, or listed phone numbers.
5. Report the scam
   • Report the attempted tech support scam at https://www.microsoft.com/reportascam so Microsoft can investigate.
   • In Microsoft Edge, you can also report the site via Settings and more > Help and feedback > Report unsafe site.

If the lock is truly from Microsoft Defender and not just a browser page, and you cannot use the device at all, use another device to reach Microsoft Support via the official support pages and request live assisted support.

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References:

• Protect yourself from online scams and attacks
• Protect yourself from tech support scams
• You cannot download the Microsoft Safety Scanner because of a malware infection
• Get help with your Microsoft account
• OneDrive issues with BT Web Protect
• My computer was locked by Microsoft defender, I was asked to call 1-844-452-2441 to get it unblocked. Could somebody confirm that this is a legitimated Microsoft number rather than a scammer? - Microsoft Q&A
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