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    How to Recognize Fake Microsoft Tech Support Scams

    A pop-up says your computer is infected and shows a "Microsoft" number to call — it's a scam. Here's how to recognize and escape it.

    5 min read 5 stepsApril 20, 2026Verified April 2026
    1

    Recognize the Warning Signs of a Fake Alert

    ~26s
    A real Windows error will never play an alarm sound, display a toll-free phone number, or tell you to call for support. If you see a full-screen browser alert with a phone number and an alarm sound, it is a scam — not a real Windows warning. Do not call the number.

    Warning

    Calling the number connects you to scammers, not Microsoft. They will try to convince you that you need to pay them to "fix" your computer.

    2

    Close the Browser Immediately

    ~27s
    Press Alt + F4 on your keyboard to close the browser window. If that does not work, press Ctrl + Alt + Delete, select Task Manager, find your browser in the list (Edge, Chrome, Firefox), click it once to select it, then click "End Task." The alert will disappear.

    Quick Tip

    If a website asks "Are you sure you want to leave?" when you try to close, click "Leave" or "Yes." This is a trick to keep you on the page — leave anyway.

    3

    Force Shut Down If the Computer Is Frozen

    ~17s
    If your keyboard shortcuts do not respond and the computer is completely locked up, hold the power button on your computer for five to seven seconds. The computer will shut off. Wait a few seconds, then turn it back on normally. The scam popup will be gone.
    4

    Run a Scan with Windows Defender

    ~18s
    Even if you only saw the popup and did not interact with it, run a quick scan to be safe. Click the Start menu and search for "Windows Security." Open it and click "Virus & threat protection," then click "Quick Scan." Windows Defender is built into Windows and is free.
    5

    Take Action If You Already Gave Access or Paid

    ~23s
    If you let someone remote into your computer or paid them: call your bank immediately to dispute any charges and get a new card number. Change all important passwords — especially email, banking, and your Microsoft account. Report the scam to the FTC at reportfraud.ftc.gov. Consider asking a trusted local tech professional to check the computer for any software the scammer may have installed.

    You Did It!

    You've completed: How to Recognize Fake Microsoft Tech Support Scams

    Need more help? Get Expert Help from a TekSure Tech

    Fake Microsoft tech support scams are among the most common computer scams targeting older adults. The tactics are designed to create panic and confusion so you act before you think. Knowing what these scams look like and exactly what to do breaks their power entirely.

    Here is how the scam typically starts: you are browsing the web when suddenly your browser fills with a large alert box. It may say "Warning: Your computer has been blocked" or "Microsoft Security Alert: Your computer has been infected." A loud alarm may play from your speakers. A large phone number is displayed — often with the Windows or Microsoft logo to make it look official.

    If you call that number, a person answers and says they are from "Microsoft" or "Windows Technical Support." They speak confidently and use technical language. They will ask you to install a remote access program — commonly AnyDesk or TeamViewer — that lets them control your computer. Once they have access, they navigate to obscure parts of Windows (like Event Viewer, which always shows some warnings — that is normal) and claim to show you "dangerous viruses" and "hackers in your system." Then they demand payment — often $200 to $500 — via wire transfer, gift card codes, cryptocurrency, or a payment app. Some scammers also steal files or install actual malware while they have remote access.

    Here is the key: Microsoft does not proactively monitor your computer for viruses. Microsoft will never display a phone number in an alert. Legitimate Windows error messages never include a toll-free number. Microsoft will never ask you to pay for support using gift cards — that is always a scam.

    What to do when you see the popup: press Alt + F4 on your keyboard to force the browser closed. If the keyboard shortcut does not work, press Ctrl + Alt + Delete, click Task Manager, find your browser in the list, and click End Task. If the screen is completely frozen and nothing responds, hold the power button on your computer for five to seven seconds until it shuts off.

    If you already gave a scammer remote access to your computer or made a payment: contact your bank immediately if you paid by any method, run a full scan with Windows Defender (built into Windows — search for "Windows Security" in the Start menu), change your important passwords (email, banking, Apple ID or Microsoft account), and report the scam to the FTC at reportfraud.ftc.gov.

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    How to Recognize Fake Microsoft Tech Support Scams — Step-by-Step Guide | TekSure