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Disable Antimalware Scan Interface (AMSI) for current user

Overview​

About this script

This script improves your privacy on Windows.

These changes use Windows system commands to update your settings.

This script disables the Antimalware Scan Interface (AMSI) for the current user, preventing the integration of applications and services with antimalware products.

AMSI is a standard interface that integrates applications and services with antimalware products on Windows machines 1. It helps detect potentially malicious scripts, such as harmful PowerShell commands or Microsoft Office macros, even if they are obfuscated 2.

When AMSI is enabled, antivirus programs can scan scripts before they run 2. If a known malicious pattern is detected, the script may be blocked 2.

Disabling AMSI may enhance privacy by limiting data shared with antimalware services. It may also boost system performance by reducing background scanning activities.

However, disabling AMSI poses significant security risks:

  1. Reduced protection from script-based attacks
  2. Weakened detection of malicious macros
  3. Increased vulnerability to obfuscated malware
Caution

Disabling AMSI weakens your defense against malware and script-based threats.

Technical Details​

This script modifies the Windows Registry by setting the AmsiEnable value to 0 under the HKCU\Software\Microsoft\Windows Script\Settings key 2 3 4.

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

Explore Categories​

This action belongs to Disable Antimalware Scan Interface (AMSI) category. This category contains scripts that disable various components of the Antimalware Scan Interface (AMSI) in Windows. AMSI is a standard interface that allows applications and services to integrate with antimalware products on Windows systems. It functions as an interception engine, enabling... 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: Disable Antimalware Scan Interface (AMSI) for current user.
  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

  2. Type cmd

  3. Right click on Command Prompt select Run as administrator

  4. Click on Yes to run Command Prompt

Animation showing how to open terminal as administrator on Windows 11

  1. Copy the following code:
Code to apply changes
:: Set the registry value: "HKCU\Software\Microsoft\Windows Script\Settings!AmsiEnable"
PowerShell -ExecutionPolicy Unrestricted -Command "$registryPath = 'HKCU\Software\Microsoft\Windows Script\Settings'; $data = '0'; reg add 'HKCU\Software\Microsoft\Windows Script\Settings' /v 'AmsiEnable' /t 'REG_DWORD' /d "^""$data"^"" /f"
  1. Right click on command prompt to paste it.
  2. Press Enter to apply remaining code.

Copy restore code​

Copy and run the following code to restore changes:

Revert code
:: Delete the registry value "HKCU\Software\Microsoft\Windows Script\Settings!AmsiEnable"
PowerShell -ExecutionPolicy Unrestricted -Command "reg delete 'HKCU\Software\Microsoft\Windows Script\Settings' /v 'AmsiEnable' /f 2>$null"

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