KB5050575: Out-of-Box Experience Update for Windows 11 24H2 and Windows Server 2025 (January 21, 2025)
KB5050575 improves the Windows 11 version 24H2 and Windows Server 2025 out-of-box experience (OOBE). It installs automatically during OOBE when an internet connection is available.
Summary
KB5050575 is an out-of-box experience (OOBE) update for Windows 11, version 24H2 and Windows Server 2025, released on January 21, 2025. It is a non-security, optional update that applies exclusively to the Windows OOBE process. The update delivers improvements to the setup experience and installs only when OOBE updates are enabled and an internet connection is present. See Microsoft Support for the official page.
Improvements and fixes
- Improves the overall out-of-box experience for devices running Windows 11, version 24H2 and Windows Server 2025, covering the initial setup flow that users and administrators encounter when a device first starts up.
- Updates key OOBE-related system files, including
usosvc.dll(10.0.26100.2607),usosvcimpl.dll(1309.2410.30012.0), andMoUsoCoreWorker.exe(1309.2410.30012.0), for both x64 and Arm64 platforms. File timestamps are dated January 7, 2025.
Known issues
Microsoft lists no known issues for this update at the time of writing.
How to get this update
Windows OOBE delivery: This update is installed automatically during the Windows OOBE process, provided the device has an active internet connection and OOBE updates are enabled. It is not delivered through Windows Update, WSUS, or the Microsoft Update Catalog as a standalone download - it applies only within the OOBE context.
Prerequisites: There are no prerequisites required to install this update.
Restart requirement: A device restart is required after this update is applied.
Update replacement: This update does not replace any previously released update.
Frequently asked questions
Does this update apply to all Windows 11 editions?
The update applies to Windows 11 Home, Pro, Enterprise, Education, Enterprise Multi-Session, SE, and IoT Enterprise, all at version 24H2. It also applies to Windows Server 2025. It does not apply to earlier Windows 11 feature releases or any Windows 10 edition.
Will this update install on devices that are already deployed and past OOBE?
No. According to Microsoft, this update applies only to the Windows OOBE process. It will not install on a device that has already completed initial setup. It is relevant only during provisioning or fresh deployments where the OOBE flow runs.
Is an internet connection required for this update to install?
Yes. Microsoft states that this update installs during the Windows OOBE process only if an internet connection is available at the time of setup. Devices going through OOBE without internet access will not receive this update during that session.
Does this update affect x64 and Arm64 devices equally?
Yes. Microsoft provides updated files for both x64-based and Arm64-based versions of Windows. The file versions are identical across both architectures, though file sizes differ - for example, MoUsoCoreWorker.exe is approximately 4.2 MB on x64 and approximately 4.9 MB on Arm64.
