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Frederickk's avatar
Frederickk
Iron Contributor
Jan 09, 2025

24H2 - Unable to install any UUP ISOs

Here is what I normally do.

Every so often I download a fresh and up to date ISO from UUPDump.
I install it into a Hyper-V virtual machine and configure it how I want.
I use DIM to capture-image
I use deployment tools to author an ISO as needed.

I do it this way because I like being able to take snapshots in different states for different customers etc and then export the image.
Usually I end up with an ISO that installs everything unattended/correctly without issues.

Tried it on a recent build of 24H2 and during the installing files screen at roughly 10% or so, I get a Windows installation failed confirmation prompt.

First I thought my USB had gone bad, so I tried the base 24H2 ISO, which worked fine.
It seems any UUP or DIM captured/modified ISO causes this error.

I don't want to have to go through my basic customisations/optimisations from scratch on bare metal.

Part of me thinks it relates to the known issue, part of me thinks maybe some security setting is tripping it up?
Any ideas would be helpful.

  • Vaentina's avatar
    Vaentina
    Iron Contributor

    Try applying only the most critical changes to see if it passes the installation phase with fewer modifications. This way, you can isolate any potential conflicts arising from specific customizations.

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