A loud alarm and a full-screen warning can make it feel as though your computer has been taken over. Sometimes the message is a deceptive webpage designed to make you call a scammer. A logo or urgent tone does not prove that the warning comes from Microsoft.
Do not call the number in the warning
Microsoft says its error and warning messages do not include phone numbers. Do not call a number displayed in a suspicious pop-up, send payment or install software it recommends. Do not give someone remote access because the warning tells you to.
A webpage claiming to have found a virus is not, by itself, a diagnosis. At the same time, closing the page does not prove that the computer is free of unwanted software. What happened before and after the warning matters.
Leave the page without engaging with it
Try closing the browser using its own window controls rather than buttons inside the warning. If it will not close normally, Windows Task Manager can be used to end the browser task. This can lose unsaved work in browser tabs. Avoid reopening the same suspicious tabs when the browser restarts.
Use security tools you already trust, reached through Windows or the vendor’s official site, rather than a download promoted by the warning. Do not turn off protection just because a page asks you to.
If you already called or granted access
End the conversation and remote session. If someone still has control, disconnect the affected computer from the internet. Use a different trusted device for account help. Contact your bank or payment provider through a known official number if you shared payment information or paid.
Tell a trusted technician what software was installed and what access was granted. Do not minimize what happened out of embarrassment; the details help determine the next steps. Avoid sharing passwords, verification codes or recovery keys by text.
Ask for help without the pressure
Call or text 602-349-5741 to discuss suspicious behavior on your Windows computer and any diagnostic fee with Phoenix CPU Repair in West Phoenix. Drop-offs are by confirmed appointment only. No Mac repairs or on-site visits.
Further reading: Microsoft’s tech-support scam guidance and California Attorney General’s scam guidance.