Helpful How-To Guide

Scan Your Computer
with Windows Security.

Windows includes built-in security tools that can scan your computer for viruses, malware, and other threats. This guide will show you how to run a scan using Windows Security.

Step-by-Step Instructions

Follow these simple steps to scan your computer using Windows Security.

1

Open Windows Security

Click the Start button and type Windows Security.

Select Windows Security from the search results to open the app.

2

Open Virus & Threat Protection

In Windows Security, select Virus & threat protection.

This is where Windows displays current threat information and provides access to its scanning options.

3

Start With a Quick Scan

Under Current threats, select Quick scan.

A Quick scan checks areas of your computer where threats are commonly found.

4

Let the Scan Finish

Allow Windows Security to complete the scan.

You can continue using the computer during a normal scan, although the computer may occasionally run a little slower while the scan is working.

5

Review the Results

When the scan finishes, Windows Security will display the results.

If something is detected, carefully review the recommended action provided by Windows Security.

Scan Options Explained

Windows Security offers several types of scans. Here's what the most common options do.

Quick Scan

Checks common locations where threats are likely to be found. This is a good place to start for a routine security check.

Good Starting Point

Full Scan

Checks every file and program on your computer. A Full scan can take considerably longer than a Quick scan, particularly on computers with a large amount of stored data.

More Thorough Scan

Microsoft Defender Offline Scan

Restarts your computer and scans from outside the normal Windows environment. This can help when you are concerned about malware that may be difficult to detect or remove while Windows is running.

Advanced Scan Option

Before Running Microsoft Defender Offline

Save your work and close open programs first. Microsoft Defender Offline intentionally restarts the computer to perform the scan.

Understanding Your Scan Results

Here's what the result may mean and what you can do next.

No Current Threats Found

If Windows Security reports that no current threats were found, the scan did not detect a threat in the areas it checked.

That's reassuring, but it doesn't necessarily explain every computer problem. If you're still seeing unusual pop-ups, redirects, errors, or other suspicious behavior, something else may need attention.

Threats Found

If Windows Security detects a threat, review the threat details and the action recommended by Windows Security.

If the warning keeps returning, you don't understand what was detected, or the computer continues behaving strangely, CBC Computer Services can help.

CBC Computer Services

Did Windows Security Find Something?

If Windows Security detects a threat, don't panic. Review the recommended action and allow Windows Security to address the detected item.

If the warning keeps returning, you're unsure what Windows found, or your computer is still behaving strangely, CBC Computer Services can help.

Still Concerned Even Though the Scan Came Back Clean?

A clean scan is reassuring, but it doesn't necessarily explain unusual pop-ups, browser redirects, suspicious remote-access software, account-security problems, or other unusual computer behavior.

Get Additional Help