Comprehensive Guide to Manually Scanning Files for Malware in Windows 11

Ensuring your Windows 11 system remains secure involves proactive measures, one of which is manually scanning specific files or folders for malware. While Windows Defender offers real-time protection, manual scans provide an additional layer of security, especially when dealing with files from untrusted sources.

Despite continuous monitoring by Windows Defender, certain malware can evade detection, especially if it's dormant or disguised. Manually scanning files allows you to verify their safety before opening or executing them, reducing the risk of infection.

1. Using File Explorer Context Menu

• Steps:

1. Open File Explorer (INLINECODE0 ).
2. Navigate to the file or folder you wish to scan.
3. Right-click on the item.
4. Select "Show more options" to expand the context menu.
5. Click on "Scan with Microsoft Defender."

• Outcome: The Windows Security app will open, displaying the scan results. If threats are detected, you'll be prompted to take appropriate actions. (support.microsoft.com)

1. Through Windows Security App

• Steps:

1. Press INLINECODE1 to open Settings.
2. Navigate to "Privacy & Security" > "Windows Security."
3. Click on "Virus & threat protection."
4. Under "Current threats," click on "Scan options."
5. Choose "Custom scan" and click "Scan now."
6. Select the folder containing the files you want to scan and click "Select Folder."

• Outcome: Windows Defender will scan the selected folder for malware. (support.microsoft.com)

1. Using Command Prompt

• Steps:

1. Open Command Prompt as Administrator:

• Press INLINECODE2 , type "Command Prompt," right-click the result, and select "Run as administrator."

1. Navigate to the Microsoft Defender directory:

• Type INLINECODE3 and press Enter.

1. List the directories to find the latest version:

• Type INLINECODE4 and press Enter.

1. Change to the latest version directory:

• Type INLINECODE5 (replace INLINECODE6 with the latest version found) and press Enter.

1. Run the scan:

• For a specific file:
• INLINECODE7
• For a specific folder:
• INLINECODE8
• Outcome: The command will execute the scan, and the results will be displayed in the Command Prompt window. (windowscentral.com)

1. Using PowerShell

• Steps:

1. Open PowerShell as Administrator:

• Press INLINECODE9 , type "PowerShell," right-click the result, and select "Run as administrator."

1. Run the scan:

• For a specific file:
• INLINECODE10
• For a specific folder:
• INLINECODE11
• Outcome: PowerShell will execute the scan, and the results will be displayed in the PowerShell window. (windowscentral.com)

• Regular Updates: Ensure that Windows Defender's definitions are up to date to detect the latest threats.
• Caution with Exclusions: Be cautious when adding exclusions to prevent scanning certain files or folders, as this can leave your system vulnerable.
• Offline Scanning: For persistent malware that evades detection, consider using the Microsoft Defender Offline scan, which runs outside of Windows to detect and remove stubborn threats. (support.microsoft.com)

By regularly manually scanning files and folders, you enhance your system's security and reduce the risk of malware infections.