Is This Microsoft Virus Warning Real?

What’s happening?

You may see a pop-up claiming that Microsoft detected a virus or that your computer is infected.

How these scams work

• A web page can show a fake Microsoft warning.
• A real security message may be mixed up with a scam pop-up.
• Scammers use urgent language to make people call, pay, or install software.

Some legitimate security software can display warnings, but unexpected pop-ups that tell you to call a phone number are a common type of tech-support scam.

Microsoft does not normally need to call you unexpectedly because your computer supposedly has a virus.

Common warning signs

Be especially cautious if the pop-up:

• Tells you your computer is infected
• Makes loud sounds or repeatedly displays warnings
• Tells you to call a phone number
• Tells you not to turn off your computer
• Asks you to give someone remote access
• Requests payment to "fix" the computer
• Asks for passwords or verification codes

What you should do

1. Don't call the number shown in the pop-up.
2. Don't give the caller remote access to your computer.
3. Don't provide passwords, verification codes, or payment information.
4. If possible, close the browser window or pop-up without clicking suspicious buttons.
5. If you're unsure whether the warning is legitimate, stop and get help before calling anyone.

A browser pop-up can claim almost anything. The appearance of a Microsoft logo or warning does not prove the message is from Microsoft.

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Published by LoTyde Tech Assistance · Published: 2026 · Updated: 2026