Open-source tool for completely uninstalling Windows Defender

A Complete Open-Source Tool for Uninstalling Windows Defender

On Windows systems, the built-in Windows Defender (Microsoft Security Center) provides basic protection, but in certain scenarios, it can impact performance or conflict with third-party security/virtualization software. For advanced users and enterprise IT administrators who need to completely remove or disable Defender, DefenderRemover offers an all-in-one solution, giving you full control over enabling, disabling, and removing security components.

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What is DefenderRemover?

DefenderRemover is an open-source tool that supports one-click removal and disabling of Windows Defender and related security components on Windows 8.x, Windows 10 (all versions), and Windows 11 (21H2, 22H2, 23H2 and later, Dev Canary channels, etc.). It not only disables real-time protection but also strips deep-level services, drivers, and policies, leaving your system “clean” without any Defender traces.

Core Features

1. Security Component Removal / Disabling

   • Windows Security App (SecHealthUI)
   • Windows Virtualization-Based Security (VBS), Hypervisor Boot
   • Windows SmartScreen, Exploit Guard, UAC Virtualization
   • Tamper Protection, Pluton Support & Services
   • “Windows Security” page in Settings App

2. Complete Antivirus Component Removal

   • Defender definition update list, SpyNet telemetry
   • Antivirus services, filter drivers, and rootkit scanners
   • Scheduled scan tasks, right-click context menu entries
   • Hide antivirus protection status in Security Center

3. Automation & Unattended Mode

   • Command-line usage: Defender.Remover.exe /r <mode number>
   • Supports “Safe Mode” and “Full Removal Mode” with multiple options
   • Can be integrated into batch scripts and image creation workflows

4. Advanced Solutions

   • Manual removal of Windows Defender Application Guard policies
   • Create custom Windows ISOs with integrated removal scripts
   • Supports automatic execution during OOBE phase

Supported Platforms

• Windows 8.1 – All editions
• Windows 10 – All versions (including Enterprise, Home, etc.)
• Windows 11 (21H2, 22H2, 23H2 and later, Dev Channel, Canary Channel)

Installation & Usage

1. Download

   • Visit the Releases page:
     https://github.com/ionuttbara/windows-defender-remover/releases

2. Execution

   • Run the .exe as Administrator and follow the interactive prompts to select a removal mode
   • Alternatively, clone via Git and execute the batch script:

     git clone https://github.com/ionuttbara/windows-defender-remover.git
     cd windows-defender-remover
     Script_Run.bat

3. Automation Integration

   • Defender.Remover.exe /r 1 (1 stands for “Safe Removal”; check the help documentation for more modes)

Tip: It is recommended to create a system backup before running the tool, so you can quickly recover in case of unexpected issues.

Important Notes

• This tool completely modifies system security policies and components. Ensure you truly need to remove Defender before proceeding.
• Some antivirus software may flag it as malicious. Temporarily disable your antivirus and trust the tool’s source before running.
• Windows updates (especially Intelligence Updates) may restore some Defender components. If removal fails, disable Tamper Protection first, then restart and try again.

Open-Source Repository & Download

GitHub Releases:
https://github.com/ionuttbara/windows-defender-remover/releases

Project Homepage (includes full documentation & FAQ):
https://github.com/ionuttbara/windows-defender-remover

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