ollama - 💡(How to fix) Fix Ollama fails to load MLX dynamic library on macOS [1 participants]

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ollama/ollama#15480Fetched 2026-04-11 06:12:33
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Error Message

Error: 500 Internal Server Error: mlx runner failed: Error: MLX not available: failed to load MLX dynamic library (searched: [/opt/homebrew/Cellar/ollama/0.20.5/bin/lib/ollama /opt/homebrew/Cellar/ollama/0.20.5/bin]) (exit: exit status 1)

Code Example

Error: 500 Internal Server Error: mlx runner failed: Error: MLX not available: failed to load MLX dynamic library (searched: [/opt/homebrew/Cellar/ollama/0.20.5/bin/lib/ollama /opt/homebrew/Cellar/ollama/0.20.5/bin]) (exit: exit status 1)

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What is the issue?

Installed Ollama using Homebrew: brew install ollama.

Ollama works fine with models that do not require MLX support? However, ollama run qwen3.5:35b-a3b-coding-nvfp4 returns the following error.

Error: 500 Internal Server Error: mlx runner failed: Error: MLX not available: failed to load MLX dynamic library (searched: [/opt/homebrew/Cellar/ollama/0.20.5/bin/lib/ollama /opt/homebrew/Cellar/ollama/0.20.5/bin]) (exit: exit status 1)

Note that the solution noted in https://github.com/ollama/ollama/issues/15433#issuecomment-4211344690 does not work either.

Relevant log output

OS

macOS

GPU

Apple

CPU

Apple

Ollama version

0.20.5

extent analysis

TL;DR

The issue is likely due to MLX not being available, and a potential fix involves ensuring the MLX dynamic library is properly installed and configured.

Guidance

  • Verify that the MLX dynamic library is installed and available in the expected locations, such as /opt/homebrew/Cellar/ollama/0.20.5/bin/lib/ollama.
  • Check the Ollama documentation for specific instructions on installing and configuring MLX support, as it may require additional steps beyond the standard installation process.
  • Consider reinstalling Ollama using Homebrew with any additional flags or options that may be required for MLX support.
  • Review the issue comment referenced in the problem statement (https://github.com/ollama/ollama/issues/15433#issuecomment-4211344690) to see if there are any other troubleshooting steps or workarounds that may be applicable.

Notes

The provided solution in the referenced issue comment did not work, so alternative approaches may be necessary. Additionally, the issue may be specific to the macOS and Apple GPU/CPU configuration.

Recommendation

Apply workaround: The issue is likely specific to the MLX configuration, and reinstalling or reconfiguring Ollama with MLX support may resolve the issue.

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