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Why your MCP server is not connecting: a practical troubleshooting guide

This story is from 2026-10-23. It is preserved in the archive; the latest stories are on the live feed.

You add an MCP server, restart the client, and get ✘ Failed to connect , a red dot, or a server that is listed but has no tools. The error text is short and the fix is usually one line of config, but guessing at it can eat an afternoon. This guide gives a fixed order to check things in for Claude C…

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  1. 2026-10-23 15:32 · DEV Community — AI
    Why your MCP server is not connecting: a practical troubleshooting guide

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