runtime.node missing from prebuilds/win32-arm64 in 1.0.48-0

[TransientError]

Description

On Windows ARM64, Copilot CLI 1.0.48-0 fails immediately with:

✗ Execution failed: Error: Native addon "runtime" not found for win32-arm64.

Root Cause

The prebuilds/win32-arm64/ directory in the 1.0.48-0 package is missing runtime.node. Every other platform has it:

• prebuilds/win32-x64/ → has runtime.node ✅
• prebuilds/darwin-arm64/ → has runtime.node ✅
• prebuilds/darwin-x64/ → has runtime.node ✅
• prebuilds/linux-arm64/ → has runtime.node ✅
• prebuilds/linux-x64/ → has runtime.node ✅
• prebuilds/win32-arm64/ → missing ❌

Contents of prebuilds/win32-arm64/ in 1.0.48-0:

• computer.node
• conpty_console_list.node
• conpty.node
• keytar.node

Compare with prebuilds/win32-x64/:

• computer.node
• conpty_console_list.node
• conpty.node
• keytar.node
• runtime.node ← this one is missing from arm64
• win32-native.node

Note

This is distinct from #3298 (missing index.js loader). In 1.0.47 the binary existed at native/runtime/runtime.win32-arm64-msvc.node — it appears the migration to the new prebuilds/ layout in 1.0.48-0 dropped it for arm64 only.

Workaround

Copy the runtime binary from the 1.0.47 package:

powershell Copy-Item "~\.copilot\pkg\universal\1.0.47\native\runtime\runtime.win32-arm64-msvc.node" "~\.copilot\pkg\universal\1.0.48-0\prebuilds\win32-arm64\runtime.node"

Environment

• Windows 11 ARM64
• Copilot CLI 1.0.48-0 (installed via winget, self-updated)

[copilot-cli-bot]

This appears to be resolved as of GitHub Copilot CLI v1.0.88. Please update to that release or a newer stable version. We're closing this as completed. If it still happens, please comment with your version and reproduction steps.