exec tool returns empty output on Windows - commands run instantly with no errors
Bug Description
The exec tool returns empty output on Windows. Commands appear to succeed (no errors in logs) but return nothing.Steps to Reproduce
1. Run any exec command (e.g.,echo hello2. Get empty result
Expected vs Actual
- Expected: Command output (e.g., "hello")- Actual: Empty output, tool ends instantly (0ms in logs)
Environment
- OpenClaw: 2026.2.15- Node.js: v25.5.0
- OS: Windows_NT 10.0.19045
- Config: tools.exec.host = "gateway", security = "full"
Logs
16:59:53 tool start: exec
16:59:53 tool end: exec β instant, no duration
Notes
- Works fine in regular terminal (node -e "spawn works")- No errors in gateway logs
- sandbox.mode = "off"
- exec.host = "gateway"
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