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ComfyUI Network Connection Failed — cause and fix

Unable to establish network connection.

Direct answer

How do I fix "Network Connection Failed"?

Unable to establish network connection.

Key facts

  • iUnable to establish network connection.

Next step

  1. 1Check if the target service is running
  2. 2Verify network configuration
  3. 3Retry the operation

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Other ComfyUI errors

Fix

GPU Memory Exhausted

Fix

Model Not Found

Fix

Missing Python Package

Fix

GPU Driver Error

Fix

Process Terminated

Fix

Permission Denied

Frequently Asked Questions

What causes "Network Connection Failed" in ComfyUI?

Unable to establish network connection.

How do I fix "Network Connection Failed"?

Check if the target service is running Verify network configuration