Windows ISO Debloater Script

Overview

A PowerShell script to automate the debloating process for Windows ISO images. It removes specified packages, features, and performs various system tweaks to create a streamlined Windows installation.

Prerequisites

• Windows OS
• PowerShell
• Administrator privileges

Tested Versions

This script has been tested with:

• Windows 10 version 22H2 (Build 19045.3757)
• Windows 11 version 23H2 (Build 22631.4037)

Should work with any other versions too

Usage

1. Launch PowerShell as ADMINISTRATOR and execute the following commands

Set-ExecutionPolicy Unrestricted -Force
iwr -useb https://itsnileshhere.github.io/Windows-ISO-Debloater/download.ps1 | iex

Alternatively, you can manually download the script from here and execute it using PowerShell with ADMINISTRATOR privileges.

2. Select Windows ISO from the dialogue. Follow the instructions.
3. The ISO will be generated in the same directory where the script is located.
4. To whitelist a package, simply comment out its name in the script.

Customization

Package removal can be customized by modifying the following sections of the script:

• Packages to remove
• Features to remove
• Registry tweaks

Oscdimg

The script downloads "oscdimg.exe", used to generate the ISO, from Microsoft's website. If you have any doubts, you can download it using the following steps:

1. Download the "Windows ADK" Package from Microsoft.
2. Run the setup. During installation, only check the "Deployment Tools" option and continue the installation.
3. After installing, navigate to "C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Deployment Tools\amd64\Oscdimg". The "oscdimg.exe" file will be located there.
4. Copy the file and paste it alongside the script."

Credits

1. tiny11builder for idea
2. Winaero for a bunch of Registry Tweaks

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Note: This script modifies the Windows ISO. Use it at your own risk, and ensure you have a backup before running.