Warning: distributing or downloading Microsoft installation packages (MSI/MSU/MSP) from unofficial sources can violate licensing and expose systems to malware. Always obtain Microsoft software only from official Microsoft channels.
Since this file is a sub-component of the Windows ADK, you must obtain it directly from Microsoft. There are two legitimate methods.
Error: “This MSI requires a parent product”
– The file is a merge module (.msm packaged as .msi) or a feature that expects the main ADK/SDK already present. Do not run it directly. Always install through the ADK setup. windows pe boot files -onecoreuap--x86-en-us.msi download
Error: “Another version is already installed”
– Remove older ADK components via “Add or Remove Programs,” then reinstall.
Missing after installation
– Locate the Windows PE files at: C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows PE\ Windows PE boot files — "OneCoreUAP--x86-en-us
Antivirus flags the file
– If obtained from an unofficial source, delete it immediately. If from the official ADK, temporarily exclude the directory or report a false positive.
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. Use Microsoft official sources only:
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.
Unlike standard software downloads, this filename is not a standalone application. It is a Microsoft Installer (MSI) package belonging to the Windows Assessment and Deployment Kit (Windows ADK) . Let's decode the name:
windows-pe-boot-files : This refers to Windows Preinstallation Environment (Windows PE) . WinPE is a lightweight version of Windows used for deploying workstations, servers, and troubleshooting an existing OS. The "boot files" are the critical components (EFI, bootmgr, BCD store) required to launch WinPE from USB, PXE network boot, or a recovery partition.onecoreuap : This indicates the OneCore Unified Application Platform – a shared core of Windows system files that bridges the gap between desktop Windows, Xbox, IoT, and HoloLens. This specific component ensures the boot environment is compatible across modern devices.x86 : The 32-bit architecture version. Even on 64-bit systems, x86 WinPE is often required to run legacy deployment tools or older hardware diagnostics.en-us : English (United States) language pack..msi : Microsoft Installer – used by Windows Installer services to manage installation, repair, or removal.In short: This file is not meant for direct double-clicking in a typical user scenario. It is a feature payload that the Windows ADK installer calls upon when you select the "Windows Preinstallation Environment (Windows PE)" component.