I am experiencing a persistent issue with the MCP (Model Context Protocol) nodes in n8n. After switching the SSE endpoint in Claude Desktop’s MCP config from my n8n Cloud instance to a Self-hosted instance (Elestio), and then switching back, the MCP Client node is unable to connect to the MCP Serve…

Thanks! That did it for me as well. I send a message to elast.io support and they made the changes because I didnt have the rights. My message: Is there gzip or HTTP compression enabled for my n8n service (including on custom domain/SSL proxy)? If so, how can I disable it for API and SSE compatibi…

Restart n8n and Claude Desktop. If possible, check the session ID or token parameters used by the MCP Client node for the connection. Make sure the MCP Server Trigger on the server side is working properly and that the SSE endpoint is continuously live.

Thank you for your suggestions. I have carefully checked all the steps: I have restarted both n8n (self-hosted) and Claude Desktop multiple times, including full reboots. There are no manually set tokens or session IDs in the workflow; the node uses only the automatically generated parameters. Th…

Hi Florian, I had a similar issue. I hosted on Hetzner via Coolify-Dashboard. I resolved the problem by unchecking gzip compression. Watch py post here: [Bild] Mcp server not running on n8n Questions Describe the problem/error/question I’m experiencing an…

MCP Client can´t reach MCP Server on n8n

Questions

DariRuProg 19. Mai 2025 um 17:06 4

Hi Florian,

I had a similar issue. I hosted on Hetzner via Coolify-Dashboard. I resolved the problem by unchecking gzip compression. Watch py post here:

Have a great day!

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MCP Client can´t reach MCP Server on n8n

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