How To Scan For Viruses On Windows 11: A Step-by-Step Guide

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Edgar Nicov

How-To

4 min. read

Published on November 2, 2025

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Keeping your Windows 11 system safe from viruses and malware is crucial in today’s digital landscape. Regular virus scans are essential for detecting and removing malicious software that can compromise your data, privacy, and overall system performance. This guide will walk you through the different methods available to scan for viruses on Windows 11, ensuring your computer remains protected.

Windows 11 offers built-in security features, like Windows Security (formerly Windows Defender), which provides real-time protection and on-demand scanning capabilities. Additionally, you can use third-party antivirus software for enhanced security. Understanding how to use these tools effectively is key to maintaining a secure computing environment. Let’s explore the step-by-step process of scanning for viruses on your Windows 11 system.

How Do I Scan My Computer For Viruses on Windows 11?

Using Windows Security to Perform a Quick Scan

Windows Security is the built-in antivirus program in Windows 11. A quick scan checks the most common locations where malware is found.

Click the Start button.
Type “Windows Security” and press Enter.
Click on Virus & threat protection.
Under “Quick scan,” click the Scan button. Windows will start scanning your computer for viruses.

Running a Full Scan with Windows Security

A full scan checks every file on your hard drive and can take longer than a quick scan.

Click the Start button.
Type “Windows Security” and press Enter.
Click on Virus & threat protection.
Click on Scan options.
Select Full scan, and then click Scan now.

Performing a Custom Scan with Windows Security

A custom scan allows you to scan specific folders or drives.

Click the Start button.
Type “Windows Security” and press Enter.
Click on Virus & threat protection.
Click on Scan options.
Select Custom scan, and then click Scan now.
Select the folders or drives you want to scan and click Select Folder.

Scanning with Microsoft Safety Scanner

The Microsoft Safety Scanner is a standalone tool that can be used to scan for and remove malware.

Download the Microsoft Safety Scanner from the Microsoft website.
Run the downloaded file.
Select the scan type you want to perform (Quick scan, Full scan, or Custom scan).
Click Next to start the scan.

Using Third-Party Antivirus Software

Many third-party antivirus programs are available for Windows 11. These programs often offer additional features and protection compared to Windows Security.

Download and install a third-party antivirus program of your choice.
Open the antivirus program.
Follow the program’s instructions to perform a scan. The steps will vary depending on the specific software.

Tips for Effective Virus Scanning

Keep your antivirus software up to date.
Schedule regular scans.
Be cautious when opening email attachments or clicking on links from unknown sources.
Enable real-time protection in your antivirus software.

Comparing Scan Types

Feature	Quick Scan	Full Scan	Custom Scan
Scope	Common locations for malware	All files and programs on your hard drive	Specific folders or drives selected by you
Duration	Relatively fast	Can take several hours	Varies depending on the selection
Use Case	Regular checks for common threats	Thorough check for all potential threats	Targeted check of suspicious areas

Maintaining a Secure System

Scanning for viruses is a crucial part of keeping your Windows 11 system safe and secure. By following the steps outlined above, you can proactively protect your computer from malware and other threats.

FAQ

How often should I scan my computer for viruses? It is recommended to perform a quick scan at least once a week and a full scan once a month.

Does Windows Security slow down my computer? Windows Security is designed to have minimal impact on system performance. However, a full scan may temporarily slow down your computer.

Can I use multiple antivirus programs at the same time? It is generally not recommended to use multiple antivirus programs at the same time, as they can conflict with each other and cause performance issues.

What should I do if I find a virus on my computer? Your antivirus software will typically offer options to remove or quarantine the virus. Follow the program’s instructions to handle the detected threat.

Is Windows Security enough to protect my computer? Windows Security provides a good level of protection for most users. However, if you handle sensitive data or engage in high-risk activities online, you may want to consider using a third-party antivirus program for enhanced security.

Keeping Your System Protected

Regular virus scans are a vital part of maintaining a secure Windows 11 system. By utilizing the methods outlined in this guide, you can ensure your computer is protected from the ever-present threat of malware.