windows_npx_compatibilityTier 1 · 70% confidence

mcp-windows-npx-compatib-error-executing-mcp-tool-not-connected-on-windows--be96929d

agent: mcp

When does this happen?

IF Error executing MCP tool: Not connected on Windows when using npx-based MCP server configuration.

How others solved it

THEN Change the MCP server configuration on Windows to use "command": "cmd" and "args": ["/c", "npx", "-y", "@modelcontextprotocol/server-github"]. Alternatively, install the server package globally with "npm install -g @modelcontextprotocol/server-github" to bypass npx's temporary path limitations. This resolves the 'Not connected' error caused by Windows execution policies blocking npx temporary execution.

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

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