Windows PC
How to Use Windows Security to Scan for Viruses
Windows comes with a free built-in virus scanner called Windows Security. Here's how to run a scan and check your protection.
Simplified from original source
Originally published by Microsoft Support
Open Windows Security
Click the Start button (Windows icon) and type "Windows Security." Click on the app that appears. You can also find it by clicking the shield icon in the taskbar at the bottom right.
Check your protection status
The main screen shows green checkmarks if everything is working properly. If you see yellow or red warnings, tap the item to see what needs attention.
Open Virus & Threat Protection
Click "Virus & threat protection" — it shows a shield with a checkmark. This is where you run scans.
Run a Quick Scan
Click "Quick scan." Windows will check the most common locations where viruses hide. This usually takes 1–5 minutes.
Tip: For a more thorough check, click "Scan options" and choose "Full scan." This takes longer but checks your entire computer.
Review the results
When the scan finishes, you'll see "No current threats" if your computer is clean. If threats are found, Windows will show you what was found and offer to remove it.
Important: If Windows Security is turned off and you didn't do it yourself, your computer may already be infected. Ask a tech professional for help.
Was this article helpful?
Your feedback helps us improve our guides.
About this article: This guide was simplified and rewritten by TekSure from content originally published by Microsoft Support. We make it easier to read for everyday users — no jargon, just plain steps. View the original article. Learn about our content sources.