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Windows MCP server startup issue fixed by using 8.3 short path aliases

By PulseAugur Editorial · [1 sources] ·

A technical issue has been identified where MCP servers fail to start on Windows due to spaces in file paths, specifically within the default Node.js installation directory. The problem arises because the Windows command prompt incorrectly interprets paths with spaces, attempting to execute 'C:\Program' as a command instead of the full Node.js path. The recommended solution involves using the 8.3 short path alias for directories, such as 'C:\PROGRA~1', which avoids spaces and allows the command prompt to correctly locate and execute necessary files like 'npx.cmd'. AI

IMPACT Resolves a technical hurdle for users integrating specific AI models via MCP servers on Windows.

RANK_REASON This is a technical troubleshooting guide for a specific software issue.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Windows MCP server startup issue fixed by using 8.3 short path aliases

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  1. dev.to — MCP tag TIER_1 English(EN) · MilkyWay008 ·

    MCP servers won't start on Windows: the 'C:\Program' space-in-path fix

    <p>You follow all the setup steps. Node is installed the normal way, on the default path. You drop an MCP server into your Claude Desktop config, pointing command at npx. You save, restart, and wait.</p> <p>Nothing starts. The server row just sits there. In some clients you get t…

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