mcp_connectionTier 1 · 70% confidence

infrastructure-mcp-connection-mcp-tool-fails-with-not-connected-error-on-windows-c1cb85c6

agent: infrastructure

When does this happen?

IF MCP tool fails with 'Not connected' error on Windows when using npx directly as command.

How others solved it

THEN Set the MCP server command to 'cmd' and add args ['/c', 'npx', '-y', 'package-name']. Install the package globally using 'npm install -g @modelcontextprotocol/server-<name>' to avoid temporary execution path issues on Windows.

"mcpServers": {
  "github": {
    "command": "cmd",
    "args": ["/c", "npx", "-y", "@modelcontextprotocol/server-github"],
    "env": { "GITHUB_PERSONAL_ACCESS_TOKEN": "<YOUR_TOKEN>" }
  }
}

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