installation/comfyui_portable_windows

[giscus[bot]]

installation/comfyui_portable_windows

This tutorial will guide you on how to download and start using ComfyUI Portable and run the corresponding programs

https://docs.comfy.org/installation/comfyui_portable_windows?utm_source=chatgpt.com

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Please check whether the ComfyUI_windows_portable_amd setup is broken. below is what ChatGPT said after analysing my error message.

The key error is:

Fatal error in launcher:
Unable to create process using
"D:\a\ComfyUI\python_embeded\python.exe"

Notice the path:

D:\a\ComfyUI\

That is a build server path embedded inside offload-arch.exe, not your PC.

Since offload-arch.exe exists in your installation, but is trying to launch Python from a non-existent build machine path, this looks like a bug in that particular AMD portable release.

Good news: ROCm itself appears to be installed.

This line is very encouraging:

2.9.1+rocm7.2.1

That means PyTorch ROCm is loading successfully.

The actual problem is the broken launcher:

offload-arch.exe

which was compiled with a hardcoded build-server path:

D:\a\ComfyUI\python_embeded\python.exe

This is a packaging bug

What we've confirmed

✅ ROCm is installed:

torch 2.9.1+rocm7.2.1

✅ AMD package is installed.

✅ offload-arch.exe exists.

❌ offload-arch.exe itself is broken because it was compiled with:

D:\a\ComfyUI\python_embeded\python.exe

which is a build-server path.

❌ After that failure, ComfyUI crashes in:

torch.cuda.is_available()

with an access violation.