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Do You Need Windows Defender and Windows Security in Windows 11?

Nimra Malik Sep 30, 2026 868 views

Question details

The user wants to know if Windows Defender and Windows Security are separate applications that must be installed and managed independently.

Product: Windows 11
Device & OS: Windows 11
Scenario: Understanding and configuring built-in security features and antivirus protection in the Windows 11 operating system.
Observed behavior: The user is uncertain about the relationship between Windows Defender and Windows Security, and whether they need to be managed as two distinct security programs.

Before you start

Ensure your Windows 11 system is fully updated, as Microsoft regularly provides essential security intelligence updates and patches that power your built-in protection features.

Solution 1Recommended

Manage Built-in Security via the Windows Security App

Since Windows Defender (the antivirus engine) is integrated directly into Windows Security (the management interface), you only need to use this single application to control your PC's protection.

Windows Defender and Windows Security are components of the same security system in Windows 11. You do not need to download, install, or manage them separately. The Windows Security app serves as your dashboard for monitoring the Microsoft Defender antivirus engine, firewall, and account security.

Open Windows Security

Click the Start menu, type 'Windows Security' into the search bar, and press Enter to launch the application.

Verify Virus & Threat Protection

Click on 'Virus & threat protection' from the dashboard. Ensure that 'Real-time protection' is toggled on to actively defend against malware.

Update Security Intelligence

Under the 'Virus & threat protection updates' section, click 'Check for updates' to download the latest threat definitions from Microsoft.

Check Firewall and Network Protection

Navigate back to the main menu and select 'Firewall & network protection'. Verify that your Domain, Private, and Public networks indicate the firewall is active.

Regular Scans: While real-time protection runs automatically, you can manually run a 'Quick scan' from the Virus & threat protection menu if you suspect any malicious activity on your device.

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1. Download the Installer: Visit the official WPS Office website and click the free download button for Windows.
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3. Start Creating: Launch WPS Office from your Start menu and immediately begin opening, editing, and saving your Microsoft Office documents.

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Frequently Asked Questions

Do I need a third-party antivirus if I have Windows Security?

For most home and standard business users, the built-in Windows Security (powered by Microsoft Defender) provides robust, real-time protection against viruses, malware, and ransomware, making a third-party antivirus unnecessary.

How do I turn on real-time protection in Windows 11?

Open the Windows Security app, navigate to 'Virus & threat protection', click 'Manage settings' under the Virus & threat protection settings header, and toggle 'Real-time protection' to the On position.

Are Windows Defender and Microsoft Defender the same thing?

Yes, Microsoft rebranded Windows Defender to Microsoft Defender. Both terms refer to the same built-in antivirus engine that operates in the background and is managed through the Windows Security application.

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