Disable System Guard startup verification

Overview

About this script

This script improves your privacy on Windows.

These changes use Windows system commands to update your settings.

This script disables System Guard Secure Launch, a security feature in Windows.

Secure Launch is also known as Virtualization Based Security (VBS) 1 or firmware protection 2. This feature enhances startup security on Windows systems 2. It was initially introduced in Windows 10 version 1809 3.

It protects the Virtualization Based Security (VBS) environment from vulnerabilities in device firmware 4. VBS, in Windows, refers to a security technology that uses hardware virtualization to create isolated and secure environments, specifically for running sensitive operations and storing critical data 5.

Secure Launch requires specific hardware support and is not compatible with all processors 2. It uses Intel Trusted Execution Technology (TXT) and Runtime BIOS Resilience to prevent firmware vulnerabilities from impacting the Windows VBS environment 4. All drivers on the system must be compatible with this feature, or the system may crash 4.

Disabling it may enhance privacy by reducing the isolation of certain system components. This limits the system's ability to collect and potentially share data about the boot process and system state. Additionally, it increases user control over low-level system settings. This allows for more extensive privacy-focused configurations that may otherwise be restricted or overridden by the secure environment.

Disabling this feature may also improve system performance by reducing the overhead of maintaining isolated environments.

However, this comes at the cost of potentially decreased protection against specific types of attacks. The Center for Internet Security (CIS) recommends enabling this feature for additional security on supported processors 4.

Caution

This action may weaken device security by removing protection from specific firmware-based attacks.

Technical Details

This script configures the following registry values:

• HKLM\SOFTWARE\Policies\Microsoft\Windows\DeviceGuard!ConfigureSystemGuardLaunch 1 to configure the Group Policy setting.
• HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\SystemGuard!Enabled 2 to configure the system setting.

This script uses Batch (batchfile) scripting language.

Not Advised

This script should only be used by advanced users. This script is not recommended for daily use as it breaks important functionality. Do not run it without having backups and system snapshots.

Implementation Details

• Language: batch

• Required Privileges: Administrator rights

• Compatibility: Windows only

• Reversibility: Can be undone using provided revert script

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Apply now

Choose one of three ways to apply:

1. Automatically via privacy.sexy: The easiest and safest option.
2. Manually by downloading: Requires downloading a file.
3. Manually by copying: Advanced flexibility.

Alternative 1. Apply with Privacy.sexy

privacy.sexy is free and open-source application that lets securely apply this action easily.

Open privacy.sexy

You can fully restore this action (revert back to the original behavior) using the application.

privacy.sexy instructions

1. Open or download the desktop application
2. Search for the script name: Disable System Guard startup verification.
3. Check the script by clicking on the checkbox.
4. Click on Run button at the bottom of the page.

Alternative 2. Download

Irreversible Changes

This script is irreversible, meaning there is no straightforward method to restore changes once applied. Exercise caution before running, restoring it may not be possible.

1. Download the script file by clicking on the button below:

   Download script

2. Run the script file by clicking on it.

Download revert script

This file restores your system to its original state, before this script is applied.

Download restore script

Alternative 3. Copy

This is for advanced users. Consider automatically applying or downloading the script for simpler way.

1. Open Command Prompt as administrator.

HELP: Step-by-step guide

1. Click on Start menu

   Windows 11

   

   Windows 10

   

2. Type cmd

   Windows 11

   

   Windows 10

   

3. Right click on Command Prompt select Run as administrator

   Windows 11

   

   Windows 10

   

4. Click on Yes to run Command Prompt

   Windows 11

   

   Windows 10

   

---

Windows 11

Windows 10

2. Copy the following code:

Code to apply changes

:: Set the registry value: "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeviceGuard!ConfigureSystemGuardLaunch"
PowerShell -ExecutionPolicy Unrestricted -Command "$registryPath = 'HKLM\SOFTWARE\Policies\Microsoft\Windows\DeviceGuard'; $data = '2'; reg add 'HKLM\SOFTWARE\Policies\Microsoft\Windows\DeviceGuard' /v 'ConfigureSystemGuardLaunch' /t 'REG_DWORD' /d "^""$data"^"" /f"
:: Set the registry value: "HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\SystemGuard!Enabled"
PowerShell -ExecutionPolicy Unrestricted -Command "$registryPath = 'HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\SystemGuard'; $data = '0'; reg add 'HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\SystemGuard' /v 'Enabled' /t 'REG_DWORD' /d "^""$data"^"" /f"

3. Right click on command prompt to paste it.
4. Press Enter to apply remaining code.

Copy restore code

Copy and run the following code to restore changes:

Revert code

:: Delete the registry value "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeviceGuard!ConfigureSystemGuardLaunch"
PowerShell -ExecutionPolicy Unrestricted -Command "reg delete 'HKLM\SOFTWARE\Policies\Microsoft\Windows\DeviceGuard' /v 'ConfigureSystemGuardLaunch' /f 2>$null"
:: Delete the registry value "HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\SystemGuard!Enabled"
PowerShell -ExecutionPolicy Unrestricted -Command "reg delete 'HKLM\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\SystemGuard' /v 'Enabled' /f 2>$null"

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