10 Best Ways to Clear Windows Defender Protection History

10 Best Ways to Clear Windows Defender Protection History in Windows 11

Windows 11 is the latest version of the Windows operating system, designed to deliver a more secure, modern, and reliable user experience. One of its built-in security features is Windows Defender, which protects your computer against malware, spyware, viruses, and other online threats.

While Windows Defender Protection works efficiently in the background, it keeps a detailed record of all its actions. This record is known as the Protection History. It logs scans, detected threats, updates, and security actions taken on your system.

Over time, this protection history can grow quite large. In some cases, it may contribute to system slowdowns or clutter your security logs. Thankfully, there are several ways to clear the Windows Defender Protection History in Windows 11 and keep your system running smoothly.

1. Use the Windows Security App

The easiest way to clear Protection History is through the built-in Windows Security app.

• Open Windows Security
• Click on Virus & Threat Protection
• Select Protection History
• Review and remove items if available

This is the safest and most user-friendly method.

2. Use Command Prompt

You can also clear logs using Command Prompt.

• Open Command Prompt as Administrator
• Type: wevtutil cl Security
• Press Enter
• This command clears security event logs, including Windows Defender Protection history.

3. Delete Protection History via File Explorer

You can manually delete Defender history files:

1. Go to: C:\ProgramData\Microsoft\Windows Defender\Scans\History
2. Delete the contents inside the folder

You may need administrative permissions to complete this step.

4. Use the Windows Registry (Advanced Users Only)

The Windows Registry allows deeper system modifications.

• Press Win + R
• Type regedit
• Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender\Scans
• Delete the History folder

5. Run Windows Defender Protection Advanced Scan

The Advanced Scan tool allows you to perform deeper system scans.

• Open Windows Security
• Click Virus & Threat Protection
• Choose Scan Options
• Run an advanced scan

This may refresh and manage protection records.

6. Use Windows PowerShell

PowerShell offers another command-based option.

• Open PowerShell as Administrator

• Enter: Clear-WDPH

This command clears the Windows Defender Protection History.

7. Run Microsoft Safety Scanner

Microsoft Safety Scanner is a free malware removal tool. It scans your system and can help reset protection logs during the cleaning process.

Download it from Microsoft’s official website and run a full scan.

8. Use Windows Defender Protection Offline Scan

The Offline Scan tool runs before Windows fully loads, allowing it to remove deep-rooted threats.

• Open Windows Security
• Go to Scan Options
• Select Microsoft Defender Offline Scan

This can help clean threats and refresh protection logs.

9. Update Windows

Running Windows Update ensures your system has the latest patches and fixes. Sometimes updating Windows can reset or refresh security logs automatically.

• Go to Settings
• Click Windows Update
• Check for updates

Keeping your system updated improves performance and security.

10. Use a Trusted Third-Party Tool

Several third-party system optimization tools can help clear security logs safely. These tools are often easier than manually editing system files or the registry.

However, always research and download software from reputable sources to avoid malware.

Final Thoughts

Windows Defender is an essential security feature in Windows 11, but its Protection History can grow over time and create unnecessary clutter. Clearing this history periodically helps maintain system performance and keeps your logs organized.