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Claude Code errors / Connectivity

Failed to reconnect to MCP server

platform: Claude Code / category: Connectivity

Cause

Claude Code spawns MCP subprocesses with an unescaped working directory; when its launch directory contains spaces or special characters (e.g. iCloud Drive), spawning fails.

Fix

Launch Claude Code from a directory whose full path has no spaces or special characters: cd ~/Projects/myproject && claude. The MCP server's own cwd setting does not prevent this - the launch directory of Claude Code itself must be clean. Confirmed upstream bug with no config workaround.

Source thread →

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