Tag: MDT WDS boot chain alignment

Steps to Fix the “Invalid OS GUID” Error in MDT

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Steps to Fix the “Invalid OS GUID” Error in MDT

Deploying operating systems using Microsoft Deployment Toolkit (MDT) is straightforward until unexpected errors interrupt the process. One common issue you can encounter is the “Invalid OS GUID” error during task sequence execution. Therefore in this guide we will discuss the steps to Fix the “Invalid OS GUID” Error in MDT. Please see Faulting SecHealthUI: Resolve…

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Windows, Windows Server

Secure Boot 2023 Compliance Across WinPE, MDT, WDS, and ADK: Boot Chain Alignment and PXE Validation [Final Part]

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Secure Boot 2023 Compliance Across WinPE, MDT, WDS, and ADK: Boot Chain Alignment and PXE Validation [Final Part]

Since my devices had secure boot update applied (SafeOS), the firmware and Secure Boot policy enforced stricter validation from the PC. While the deployment environment still served older ( mismatched boot files). This mismatch led to PXE failures, as the firmware refuses to execute the boot loaders that did not meet the minimum required version…

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Windows, Windows Server