Enable secure "DTLS 1.2" protocol

Overview

About this script

This script improves your privacy on Windows.

These changes use Windows system commands to update your settings.

This script enables the DTLS 1.2 protocol. This protocol is identified as DTLS 1.2 on Windows 1 2.

DTLS (Datagram Transport Layer Security) provides secure communication over the UDP protocol 3. Based on the TLS protocol, DTLS offers equivalent security measures 3. Common uses include online gaming, DNS lookups, and VPN services.

Despite being superseded by the more secure DTLS 1.3 4, DTLS 1.2 is still approved by authorities like NIST 5, NSA 6, and the German Federal Office for Information Security 2.

DTLS 1.2 is based on TLS 1.2 7. It's supported by Windows since Windows 10 version 1607 and by Windows Server 2016 Standard 8 9. privacy.sexy chooses DTLS 1.2 over DTLS 1.3 due to the lack of support for DTLS 1.3 on Windows platforms 8.

This script only works on Windows 10 version 1607 or newer. This restriction is in place to maintain system stability by allowing only supported Windows versions to use the protocol.

Caution

This may cause compatibility issues with older devices or software.

This script uses Batch (batchfile) scripting language.

Safe for General Use

This script is recommended for all users. It helps to improve privacy without affecting stability.

Implementation Details

• Language: batch

• Required Privileges: Administrator rights

• Compatibility: Windows only

• Reversibility: Can be undone using provided revert script

Explore Categories

Enable secure connections

This action belongs to Enable secure connections category. This category configures essential security settings to protect network communications. Newer security standards offer improved protection against vulnerabilities found in older versions. Scripts within this category enhance your privacy and security by enabling these standards to maintain the... Read more on category page ▶

Improve network security

This action belongs to Improve network security category. This category is dedicated to improving network security. It aims to minimize vulnerabilities by offering various settings that improve the integrity and confidentiality of data transmitted over the network. It features a range of measures to protect data transmission from unauthorized access,... Read more on category page ▶

Security improvements

This action belongs to Security improvements category. This category encompasses a range of scripts designed to improve the security of your system by enforcing security best practices. These scripts help protect your system against various types of cyber threats and unauthorized access. Read more on category page ▶

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: Enable secure "DTLS 1.2" protocol.
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

:: Enable "DTLS 1.2" protocol as default for TLS/SSL connections
:: Set the registry value: "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server!Enabled"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $registryPath = 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server'; $data = '1'; reg add 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server' /v 'Enabled' /t 'REG_DWORD' /d "^""$data"^"" /f"
:: Set the registry value: "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server!DisabledByDefault"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $registryPath = 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server'; $data = '0'; reg add 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server' /v 'DisabledByDefault' /t 'REG_DWORD' /d "^""$data"^"" /f"
:: Set the registry value: "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client!Enabled"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $registryPath = 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client'; $data = '1'; reg add 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client' /v 'Enabled' /t 'REG_DWORD' /d "^""$data"^"" /f"
:: Set the registry value: "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client!DisabledByDefault"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; $registryPath = 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client'; $data = '0'; reg add 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client' /v 'DisabledByDefault' /t 'REG_DWORD' /d "^""$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

:: Restore "DTLS 1.2" protocol defaults for TLS/SSL handshake
:: Delete the registry value "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server!Enabled"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; reg delete 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server' /v 'Enabled' /f 2>$null"
:: Delete the registry value "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server!DisabledByDefault"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; reg delete 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Server' /v 'DisabledByDefault' /f 2>$null"
:: Delete the registry value "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client!Enabled"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; reg delete 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client' /v 'Enabled' /f 2>$null"
:: Delete the registry value "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client!DisabledByDefault"
:: This operation will not run on Windows versions earlier than Windows10-1607.
PowerShell -ExecutionPolicy Unrestricted -Command "$versionName = 'Windows10-1607'; $buildNumber = switch ($versionName) { 'Windows11-FirstRelease' { '10.0.22000' }; 'Windows11-22H2' { '10.0.22621' }; 'Windows11-21H2' { '10.0.22000' }; 'Windows10-22H2' { '10.0.19045' }; 'Windows10-21H2' { '10.0.19044' }; 'Windows10-20H2' { '10.0.19042' }; 'Windows10-1909' { '10.0.18363' }; 'Windows10-1607' { '10.0.14393' }; default { throw "^""Internal privacy$([char]0x002E)sexy error: No build for minimum Windows '$versionName'"^""; }; }; $minVersion = [System.Version]::Parse($buildNumber); $ver = [Environment]::OSVersion.Version; $verNoPatch = [System.Version]::new($ver.Major, $ver.Minor, $ver.Build); if ($verNoPatch -lt $minVersion) { Write-Output "^""Skipping: Windows ($verNoPatch) is below minimum $minVersion ($versionName)"^""; Exit 0; }; reg delete 'HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\DTLS 1.2\Client' /v 'DisabledByDefault' /f 2>$null"

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