Fix Windows 11 unattended install stalling in Setup

[isss802]

Problem

Unattended Windows 11 installs stall in Windows Setup and never complete — the VM never reaches the desktop, so RDP never comes up. Two fields in the w11 autounattend.xml cause it:

1. Empty product key. <ProductKey><Key></Key></ProductKey> — an empty <Key> makes Setup stop and prompt for a product key.
2. InstallFrom names an image the current ISO does not contain. <InstallFrom> /IMAGE/NAME = Windows 10 Pro. /IMAGE/NAME matches the WIM Name field. On the current English Windows 11 25H2 ISO no image has the Name Windows 10 Pro, so Setup cannot resolve the image and falls back to the interactive "Select Image" screen and waits.

Console (Glish) with the base template, English 25H2 — stuck at:

Windows 11 Setup — Select Image
    Windows 11 Home / Home N / Home Single Language
    Windows 11 Education / Education N
    Windows 11 Pro / Pro N / ...
[Back] [Next]        <- waits for a human; unattended install never proceeds

Why this regressed — reconciliation with #9

#9 correctly established (via wiminfo) that on an older Windows 11 ISO the Pro image's WIM Name was literally Windows 10 Pro (only its Display Name was Windows 11 Pro), so /IMAGE/NAME = "Windows 10 Pro" matched and selected Pro. Microsoft has since corrected that field. wiminfo of the current English 25H2 ISO shows:

Index 6:   Name: Windows 11 Pro     Description: Windows 11 Pro
Index 7:   Name: Windows 11 Pro N   ...
(no image is named "Windows 10 Pro")

So the hardcoded name matched then and does not match now. Pinning a WIM Name string is fragile across ISO builds — which is exactly what broke here.

Fix

Only the w11 template changes:

• Set the product key to the generic Windows 11 Pro setup key VK7JG-NPHTM-C97JM-9MPGT-3V66T. On multi-edition client media the product key drives edition selection, so Setup installs Pro without an InstallFrom name to match — independent of the WIM Name string and of localization.
• Remove the InstallFrom block and add <WillShowUI>OnError</WillShowUI> as a guard.

The 2k22 template is intentionally left unchanged: it keeps its InstallFrom (Windows Server 2022 SERVERDATACENTER) and no product key, which is correct — Server evaluation media has no product key to drive selection, and its edition-code Name is stable.

Testing

Deployed on Linode (jp-tyo-3, g6-standard-4). Discriminating 1-variable A/B on English Windows 11 25H2 — both instances use the same build (the ENOSPC-fixed stage3), so the media is identical and only the autounattend differs:

• Base w11 autounattend: Windows Setup stalls at "Select Image" (console screenshot above); never installs, no RDP.
• This fix: installs Windows 11 Pro unattended and reaches RDP — raw X.224 Connection Confirm 03 00 00 13 0e d0 ….
• wiminfo of the ISO (separate Ubuntu instance) confirms the Pro image's Name is Windows 11 Pro, and that no image is named Windows 10 Pro.

🤖 Generated with Claude Code