[BUG] (ARM64) fails to start on Snapdragon X Elite surface pro 11 – crashes immediately on launch (Exception 0xc0000409)

Describe the bug

On my surface pro 11 (arm64 with Snapdragon X Elite ) running windows 11 25H2 wsa installs successfully but fails to start. When launching WSA, the window briefly shows “Starting Windows Subsystem for Android…” and then closes immediately without any UI or error message.

The crash happens consistently on every launch. Event Viewer reports a crash in WsaClient.exe with exception code 0xc0000409 (stack buffer overrun), indicating the process is being terminated by Windows rather than failing during Android runtime initialization. The Android VM never finishes booting.

This occurs with Hyper-V and Virtual Machine Platform enabled, and with installation performed via Install.ps1. Memory Integrity (HVCI) is enabled and enforced on this secured-core ARM device and cannot be disabled.

Steps to reproduce the issue

i try to open file or click on manage developer settings the WSA shows “Starting Windows Subsystem for Android…” briefly, then after about one minute its closes immediately without UI or error dialog.

Expected behaviour

WSA should start normally and initialize the Android environment.

Downloaded Build Of WSA

WSA_2407.40000.4.0_arm64_Release-Nightly-GApps-13.0-NoAmazon https://github.com/MustardChef/WSABuilds/releases/download/Windows_11_2407.40000.4.0_LTS_7_HOTFIX_1_arm64/WSA_2407.40000.4.0_arm64_Release-Nightly-GApps-13.0-NoAmazon.7z

Windows build number

26100.x (25H2) arm64

PC Specification

Device: Surface Pro 11

CPU: Snapdragon X Elite (ARM64)

Architecture: ARM64

RAM: 16 GB

Windows Version: Windows 11 25H2

OS Build: 26100.x (25H2)

Hyper-V: Enabled and detected

Virtual Machine Platform: Enabled

Memory Integrity (HVCI): Enabled and enforced (grayed out, cannot be disabled)

WSA Build: 2407.40000.4.0_LTS_7_HOTFIX_1_arm64

Additional context

Faulting application name: WsaClient.exe, version: 2407.40000.4.0, time stamp: 0x67527ca5 Faulting module name: ucrtbase.dll, version: 10.0.26100.7623, time stamp: 0x0f0471e1 Exception code: 0xc0000409 Fault offset: 0x000000000007ba6c Faulting process id: 0x5AB0 Faulting application start time: 0x1DC9A8482FF50B0 Faulting application path: C:\Users\haide\Documents\WSA\WsaClient\WsaClient.exe Faulting module path: C:\WINDOWS\System32\\\ucrtbase.dll Faulting package full name: MicrosoftCorporationII.WindowsSubsystemForAndroid_2407.40000.4.0_arm64__8wekyb3d8bbwe Faulting package-relative application ID: App