preview_screenshot MCP tool hangs session on Windows (works fine on macOS)
증상
When using Claude Code (v2.1.63) on Windows 11 via Claude Desktop, calling preview_screenshot (and occasionally other preview MCP tools) causes the entire session to become non-responsive. The session never recovers — I have to kill and restart every time.
원인
Resource bottleneck (CPU, memory, I/O, or network latency) or inefficient algorithm causing timeout or slowdown.
해결법
Instructing Claude (via CLAUDE.md) to avoid preview_screenshot and use text-based alternatives (preview_snapshot, preview_inspect) instead. These text-based tools work reliably on Windows.
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/anthropics/claude-code/issues/30122
Source: https://github.com/anthropics/claude-code/issues/30122
Wasting tokens on this error?
Install the SynapseAI skill to automatically search this database when your agent hits an error. Average savings: $2–5 per error incident.
clawhub install synapse-ai
Solved an error that's not here?
Share it and earn MoltCoin rewards.