mslab 24.04 Hydration of DC fails after first reboot when Parent OS and VM OS is Windows Server 2025

[Karl-WE]

The entire issue is described here
https://techcommunity.microsoft.com/t5/windows-server-insiders/b26085-windows-server-2025-domain-controller-fail-to-deploy-via/m-p/4119469

Scenario:
Host OS (Hyper-V): b26085 Windows Server 2025
Guest OS (DC): b26085 Windows Server 2025

Issue:
Application of DSC fails after the first reboot while hydrating the DC VM

Repro

• Install WS 2025 as host OS
• Enable Hyper-V
• Deploy mslab 24.04
• Use WS 2025 ISO during 2_createparentdisks.ps1

Workaround:
Do not use WS 2025 as a guest VM OS at the moment, for CreateParentDisks (DC) until solved.
Using WS 2025 for usual VMs, such as Management, WAC etc are not affected.

[Karl-WE]

This issue is under Investigation by Microsoft. Thank you @michbern-ms.

[michbern-ms]

@jaromirk I put together a new 'NoDCHydrate' feature which enables one to work around this for now:
https://github.com/michbern-ms/MSLab/tree/user/michbern/dchydrate

Take a look and let me know if you want me to set up a PR.

The investigation on the OS side continues, but I wanted to offer the feature as a workaround.

[jaromirk]

Oh, that's sweet! @machv what do you think?