The file you are looking for, Windows PE Boot Files (OnecoreUAP)-x86_en-us.msi, is a sub-component of the Windows Assessment and Deployment Kit (ADK). It is specifically used for creating 32-bit (x86) Windows Preinstallation Environment (WinPE) boot images that utilize the OneCoreUAP codebase—a shared set of APIs across different Windows editions. Direct Download Instructions
Microsoft does not officially provide this .msi as a standalone file on their public website. Instead, it is downloaded automatically by the ADK Windows PE Add-on installer. 1. Official Method (Recommended)
Download the ADK WinPE Add-on: Go to the official Microsoft ADK download page. Run the Installer: Launch adkwinpesetup.exe.
Select Components: During the setup, ensure "Windows Preinstallation Environment" is checked.
Locate the File: Once installed, the underlying .msi files and their extracted contents are placed in:C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\. Technical Context: OneCoreUAP & x86
Understanding what this specific file does helps in troubleshooting deployment issues.
What is OneCoreUAP? It is the "Universal API" layer of Windows. WinPE images using these boot files are designed to be more modular and consistent with modern Windows 10/11 system architectures.
The x86 Limitation: Modern versions of the Windows 11 ADK (starting from version 22H2) have dropped support for 32-bit (x86) WinPE.
Solution: If you specifically need the x86 version of these boot files, you must download the ADK for Windows 10, version 2004, which was the last version to fully support 32-bit boot images. 🛠️ Usage Steps
Once you have the files installed via the ADK, you use them through the Deployment and Imaging Tools Environment: Download WinPE (Windows PE) - Microsoft Learn
Understanding Windows PE Boot Files: OneCoreUAP x86 en-US When you search for "windows pe boot files -onecoreuap--x86-en-us.msi download," you are looking for a specific internal component of the Windows Assessment and Deployment Kit (ADK). Specifically, this file contains the 32-bit (x86) boot environment files for the "OneCoreUAP" edition of Windows Preinstallation Environment (WinPE). What is Windows PE?
Windows PE (WinPE) is a lightweight, minimal operating system used to install, deploy, and repair Windows installations. It allows IT professionals to: Partition and format hard drives before OS installation. Capture and apply Windows images using DISM.
Recover data from devices that cannot boot into the full OS. Modify an offline Windows installation. Why the specific MSI?
The windows pe boot files -onecoreuap--x86-en-us.msi is an installer package that the ADK Setup downloads automatically behind the scenes.
OneCoreUAP: Refers to the unified Windows kernel designed for various device types (PCs, IoT, etc.).
x86: Indicates the 32-bit architecture. Note that Microsoft no longer supports 32-bit WinPE in the latest ADK for Windows 11; the last version to support it was Windows 10, version 2004. en-US: The English (United States) language pack. How to Download WinPE Boot Files
Microsoft does not officially provide these .msi files as standalone direct downloads on their main pages. Instead, you must use the official ADK Installer which pulls these files from Microsoft’s servers during the setup process. Step 1: Download the Windows ADK Go to the Download and Install the Windows ADK page. windows pe boot files -onecoreuap--x86-en-us.msi download
Select the version that matches your target Windows OS (e.g., Windows 10 version 2004 if you specifically need x86 support). Run adksetup.exe and select the Deployment Tools feature. Step 2: Download the Windows PE Add-on
Starting with Windows 10 version 1809, WinPE is a separate download from the main ADK. Download WinPE (Windows PE) - Microsoft Learn
The file Windows PE Boot Files (OnecoreUAP)-x86_en-us.msi is a component of the Windows Assessment and Deployment Kit (ADK) WinPE Add-on. In modern versions of Windows (version 1809 and later), WinPE is no longer included in the main ADK and must be downloaded as a separate add-on. Official Download and Installation
To obtain this file officially, you do not typically download the .msi directly from a standalone link; instead, you download the WinPE add-on installer, which then pulls the necessary MSI packages.
Download the Windows ADK: Visit the Official Microsoft ADK Download Page and download the version that matches your Windows build.
Download the WinPE Add-on: On the same page, download the "Windows PE add-on for the ADK" (adkwinpesetup.exe). Run the Installer: Open adkwinpesetup.exe as an Administrator.
Select "Install the Windows Assessment and Deployment Kit Windows Preinstallation Environment Add-ons to this computer".
Ensure Windows Preinstallation Environment (Windows PE) is checked.
Offline Download: If you need the raw MSI for another machine, choose the option "Download the Windows Assessment and Deployment kit... for installation on a separate computer" within the installer. This will save the full set of installers, including the x86 MSI, to a specified folder. Troubleshooting Missing Files
If you receive an error that "Setup cannot locate Windows PE Boot Files (OnecoreUAP)-x86_en-us.msi," it usually indicates a corrupted download or a version mismatch.
Version Mismatch: Note that the Windows 11 WinPE Add-on (specifically for version 22H2 and later) no longer includes x86 (32-bit) files. If you require x86 boot files for legacy support or MDT, you must install the WinPE Add-on for Windows 10, version 2004.
Manual Recovery: Once installed, your boot files are located at:C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\. Download and install the Windows ADK | Microsoft Learn
windows pe boot files -onecoreuap--x86-en-us.msi
windows pe boot files → Contains boot components for Windows PE (winpe.wim, bootmgr, BCD, etc.)-onecoreuap- → OneCore is Microsoft’s shared core for Windows (PC, Xbox, HoloLens, IoT). uap = Universal Access Platform (UWP related). This indicates an internal or engineering build.x86-en-us → 32-bit, English (US).msi → Installer package, but Windows PE boot files aren’t normally distributed as .msi in official releases.Conclusion: This is almost certainly not a public release file. It may come from:
OneCoreUAP branch)This file is not distributed alone via Microsoft’s consumer download pages. Instead, it is extracted or delivered as a sub‑component when you install Windows ADK (Assessment and Deployment Kit) or Windows PE add‑on for the ADK.
Legitimate sources:
Important: You should never download this MSI from third‑party file repositories, torrents, or unknown websites. Cybercriminals often rename malware to mimic legitimate system files. If you found this file outside a Microsoft toolkit installer, treat it as suspicious.
This is the safest and most straightforward method.
adksetup.exe and select "Install the Windows Assessment and Deployment Kit to this computer" .onecoreuap MSI for your architecture and language from Microsoft CDN.Note : The MSI will be extracted to a temporary folder (e.g.,
C:\ProgramData\Package Cache\GUID\) during installation, not saved as a standalone file by default.
| Scenario | Should you download this MSI? | | :--- | :--- | | Building MDT or SCCM boot images | ✅ Yes – via ADK installer | | Repairing a broken WinPE deployment | ✅ Yes – but reinstall ADK feature | | Single user wanting a USB recovery drive | ❌ No – use Windows built-in "Create a recovery drive" | | Random link from a forum or file-sharing site | ❌ Absolutely never |
The file windows-pe-boot-files-onecoreuap--x86-en-us.msi is a legitimate but non-isolated system component. It should never be treated as a direct download from third-party sources. Always route through the official Windows ADK installer or its offline ISO. By doing so, you guarantee safety, digital signature integrity, and proper version matching with your deployment environment.
If you are currently stuck in a broken WinPE build process and think this missing MSI is the culprit, step back. Uninstall the Windows ADK, restart your server or workstation, and perform a fresh installation of the ADK with the "Windows PE" feature selected. That single action will place every required boot file correctly—without hunting down obscure MSI files on the open web.
Remember: When dealing with Windows boot infrastructure, control and provenance matter more than speed. Download from Microsoft only, validate signatures, and always keep a backup of your working ADK installers for offline use.
Windows PE (WinPE) boot files, specifically for the x86 (32-bit)
architecture, are no longer included in the latest versions of the Windows Assessment and Deployment Kit (ADK) for Windows 11. Microsoft Learn If you are encountering errors like
"Setup cannot locate Windows PE Boot Files (OnecoreUAP)-x86_en-us.msi"
, it is usually because the installer is trying to find 32-bit components that Microsoft has officially deprecated for newer kits. Microsoft Learn Understanding the Component OnecoreUAP (x86):
This refers to the core architecture files for the 32-bit version of the Universal Windows Platform (UWP) environment within WinPE. MSI Payload: file is the individual installer package that the main adkwinpesetup.exe attempts to call during installation. Microsoft Learn How to Download x86 Boot Files
Because 32-bit WinPE is no longer supported in ADK for Windows 11 or Windows Server 2022, you must use an older version of the kit to obtain these files: Microsoft Learn Download the Correct Version: The last version to include 32-bit (x86) WinPE files is the ADK for Windows 10, version 2004 Official Source: You can find these on the official Microsoft ADK download page Standalone Installation:
Install the ADK for Windows 10 (2004) first, selecting at least the Deployment Tools Download and run the matching Windows PE add-on for version 2004 to get the x86 boot files. Microsoft Learn Workaround for Modern Kits (Windows 11/MDT)
If you are using the Microsoft Deployment Toolkit (MDT) with the Windows 11 ADK, you may still need x86 files for the Deployment Workbench to function correctly. A common workaround is: OpenText Community Windows PE (WinPE) - Microsoft Learn 19 Mar 2023 —
To download and install the Windows PE (WinPE) boot files, you must download the Windows Assessment and Deployment Kit (ADK) and its corresponding WinPE Add-on. The file you are looking for, Windows PE
Note that 32-bit (x86) support for WinPE was discontinued in later versions. To get the x86 files specifically, you must use the Windows 10, version 2004 release. 🛠️ Step 1: Download the Correct Version
Because you specifically need x86 (32-bit) support, you cannot use the latest Windows 11 ADK.
Last x86 Version: Windows 10, version 2004 ADK (republished May 2025). Required Files: You must download two separate installers: The Windows ADK installer (adksetup.exe). The Windows PE Add-on installer (adkwinpesetup.exe). 💻 Step 2: Installation Process
Install the ADK: Run adksetup.exe. During installation, ensure Deployment Tools is selected.
Install the WinPE Add-on: Run adkwinpesetup.exe. This contains the actual boot files, including the x86 architecture files you are looking for.
Default File Location: After installation, the x86 boot files (like winpe.wim) will be located at:C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\x86\en-us\ 🚀 Step 3: Create Bootable Media
Once installed, use the Deployment and Imaging Tools Environment (found in your Start Menu) to prepare your bootable files. Copy the Files: copype x86 C:\WinPE_x86 Use code with caution. Copied to clipboard
This command creates a working directory with all necessary x86 boot files. Create a Bootable ISO: MakeWinPEMedia /ISO C:\WinPE_x86 C:\WinPE_x86\WinPE_x86.iso Use code with caution. Copied to clipboard
You can then burn this ISO to a USB or use it in a virtual machine. ⚠️ Important Security Note
Microsoft republished these older versions in May 2025 to address critical security vulnerabilities (e.g., CVE-2026-25166). Always ensure you are downloading from the official Microsoft Learn download page to get the patched versions.
Is there a specific task you're trying to perform with WinPE? I can help you with:
Adding drivers or optional components (like PowerShell) to your boot image.
Automating your deployment using answer files (unattend.xml). Fixing specific boot errors or recovering data. Download and install the Windows ADK | Microsoft Learn
Windows PE is a lightweight version of Windows that can be used for installing, troubleshooting, and repairing Windows installations. The file you're referring to likely contains components necessary for booting Windows PE on x86-based systems.
If you have landed on this page, you are likely staring at a very specific, technical filename: windows-pe-boot-files-onecoreuap--x86-en-us.msi . Whether you are an IT professional building a custom deployment environment, a system administrator repairing a corrupted boot image, or a developer working with the Windows Assessment and Deployment Kit (ADK), finding the correct source for this MSI file can be confusing.
This article will break down exactly what this component does, why it exists, where to safely download it (without falling into malware traps), and how to install or repair it. windows pe boot files → Contains boot components
If you want, I can:
(Invoking related-search suggestions now.)