Intune script To Enforces The Enhanced PIN Policy For BitLocker

BitLocker Enhanced PIN Policy Enforcement Scripts

Overview

These two PowerShell scripts are designed to work together in Microsoft Intune for detecting and remediating the Enhanced PIN configuration for BitLocker. The detection script identifies non-compliant devices, while the remediation script automatically enforces the policy to improve system security.

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Script Architecture

Component	Purpose	Business Value
Detection Script	Checks if Enhanced PIN policy is enabled	Identifies non-compliant devices for targeted remediation
Remediation Script	Enforces Enhanced PIN policy via registry	Automated security compliance without manual intervention
Intune Integration	Proactive monitoring and enforcement	Continuous security posture management

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Detection Script: Allow-EnhancedPIN-Detection.ps1

Functionality

The detection script verifies whether the Enhanced PIN (UseEnhancedPin) policy is enabled for BitLocker by examining system registry settings.

Technical Operations

• Registry Path: HKLM:\Software\Policies\Microsoft\FVE
• Property: UseEnhancedPin
• Expected Value: 1 (enabled)

Exit Codes

• Code 0: Policy is correctly configured (compliant)
• Code 1: Policy is not set or incorrect (non-compliant)

Implementation

$Path = "HKLM:\Software\Policies\Microsoft\FVE"
$Property = "UseEnhancedPin"
$Value = '1'
try{
    $Item = Get-Item -Path $Path | Get-ItemProperty -Name $Property -ErrorAction SilentlyContinue
    If (($Item.$Property) -ne $Value){
        Exit 1
    }Else{
        Exit 0
    }
}catch{
    $errMsg = $_.Exception.Message
    Write-Error $errMsg
    exit 1
}

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Remediation Script: Allow-EnhancedPIN-Remediation.ps1

Functionality

The remediation script enforces the Enhanced PIN policy by directly modifying the Windows registry setting when the detection script identifies non-compliance.

Technical Operations

• Registry Key: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\FVE
• Value Name: UseEnhancedPin
• Value Type: REG_DWORD
• Target Value: 1

Exit Codes

• Code 0: Policy successfully enforced
• Code 1: Error occurred during enforcement

Implementation

try{
    reg add HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\FVE /v UseEnhancedPin /t REG_DWORD /d 1 /f
    Exit 0
}catch{
    $errMsg = $_.Exception.Message
    Write-Error $errMsg
    exit 1
}

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Deployment Strategy

1. Intune Configuration

• Navigate to Devices > Scripts in Microsoft Intune
• Upload both scripts with appropriate naming conventions
• Assign to target device groups based on security requirements

2. Detection Schedule

• Configure detection script to run periodically
• Set appropriate frequency for compliance monitoring
• Monitor compliance reports in Intune dashboard

3. Remediation Automation

• Link remediation script to detection script
• Enable automatic remediation for non-compliant devices
• Configure notification settings for IT administrators

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Key Benefits

Ideal for: Organizations requiring enhanced BitLocker security compliance

Security Advantages:

• Stronger PIN Protection: Enhanced PINs provide additional security layers
• Automated Compliance: Ensures consistent policy enforcement across all devices
• Reduced Manual Effort: Eliminates need for manual registry modifications
• Continuous Monitoring: Proactive detection of configuration drift

Compliance Features:

• Audit Trail: Intune provides detailed compliance reporting
• Scalable Enforcement: Applies policies across entire device fleets
• Risk Mitigation: Addresses security vulnerabilities automatically

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Technical Requirements

• Microsoft Intune subscription with device management capabilities
• Windows devices with BitLocker capabilities
• Administrative privileges for registry modifications
• PowerShell execution policy allowing script execution

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Important Considerations

Security Impact: Enhanced PINs require users to create more complex PINs, which may affect user experience. Consider providing user training and support.

Testing: Always test scripts in a pilot group before organization-wide deployment to ensure compatibility with your specific environment.

Backup: While registry modifications are generally safe, ensure you have appropriate backup and recovery procedures in place.