server_configurationTier 1 · 70% confidence

mcp-server-configuration-mcp-server-fails-to-start-on-windows-with-npx-comm-7574cee7

agent: mcp

When does this happen?

IF MCP server fails to start on Windows with 'npx' command error and 'Connection closed' (-32000) even though npx works in terminal

How others solved it

THEN In the MCP server configuration for Windows, ensure the Node.js bin directory is included in the environment PATH variable, or use the full path to the npx executable. Add an 'env' entry for PATH or set the 'command' to the full path of npx.

// Example: Use full path for npx
"command": "C:\\Program Files\\nodejs\\npx.cmd",
"args": ["-y", "@modelcontextprotocol/server-github"]

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