@github/copilot 1.0.38.0 crashes silently on Windows 11 Insider Preview Canary Build 26200 when installed via npm

[CyberSoft-Adam]

Describe the bug

When running copilot in CMD after installing via npm install -g @github/copilot, the process terminates silently with no output or error message. Windows Event Viewer shows a BEX64 crash (STATUS_STACK_BUFFER_OVERRUN) in the Application log.

Environment:

• OS: Windows 11 Home Insider Preview Canary Channel
• OS Build: 10.0.26200.2.0.0.768.101
• Locale: 1028 (zh-TW)
• Installation method: npm install -g @github/copilot
• copilot.exe version: 1.0.38.0

Windows Event Viewer - Application Error (Event ID: 1000):
Faulting application name: copilot.exe, version: 1.0.38.0, timestamp: 0x69130526
Faulting module name: copilot.exe, version: 1.0.38.0, timestamp: 0x69130526
Exception code: 0xc0000409
Fault offset: 0x00000000021c8e34
Faulting process ID: 0x7A98
Faulting application start time: 0x1DCD6DE3C63334F

Windows Event Viewer - Windows Error Reporting (Event ID: 1001):
Event Name: BEX64
Response: Not available
Problem Signature:
P1: copilot.exe
P2: 1.0.38.0
P3: 69130526
P4: copilot.exe
P5: 1.0.38.0
P6: 69130526
P7: 00000000021c8e34
P8: c0000409
P9: 0000000000000005
P10:

Affected version

1.0.38.0

Steps to reproduce the behavior

1. Install via npm:
   npm install -g @github/copilot
2. Open CMD and run:
   copilot
3. No output is produced and process terminates silently

Expected behavior

Copilot CLI launches and responds normally.

Additional context

• Installed Visual C++ Redistributable (x64) — same result
• GitHub Copilot works normally in Visual Studio and Visual Studio Code, confirming the issue is specific to the CLI executable (copilot.exe) on this OS build