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Unable to start WebUI Forge Neo #1455

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Description

@geojr78

Package

Stable Diffusion WebUI Forge Classic - Neo branch

When did the issue occur?

Running the Package

What GPU / hardware type are you using?

NVIDIA GeForce RTX 4060 Ti

What happened?

Installed the neo branch of Forge Classic, cannot start it when I launch the package

Console output

Python 3.11.13 (main, Jul 23 2025, 00:29:09) [MSC v.1944 64 bit (AMD64)]
Version: neo
Traceback (most recent call last):
File "H:\SD\StabilityMatrix-win-x64\Data\Packages\Stable Diffusion WebUI Forge Neo\launch.py", line 52, in
main()
File "H:\SD\StabilityMatrix-win-x64\Data\Packages\Stable Diffusion WebUI Forge Neo\launch.py", line 41, in main
prepare_environment()
File "H:\SD\StabilityMatrix-win-x64\Data\Packages\Stable Diffusion WebUI Forge Neo\modules\launch_utils.py", line 316, in prepare_environment
raise RuntimeError("PyTorch is not able to access CUDA")
RuntimeError: PyTorch is not able to access CUDA

Version

2.15.4

What Operating System are you using?

Windows

Activity

  1. hongvi20240807 commented on Nov 4, 2025

    @hongvi20240807

    Please excuse my poor English. Using StabilityMatrix to update WebUI Forge Neo will uninstall torch 2.8.0+cu128 and install torch 2.8.0+cpu instead. Therefore, you must reinstall CUDA within WebUI Forge Neo

    Causes and Solutions
    Haoming02/sd-webui-forge-classic#269
    Haoming02/sd-webui-forge-classic#277

  2. geojr78 commented on Nov 4, 2025

    @geojr78
    Author

    Thanks, that seems to have worked!

  3. hybrid897 commented on Nov 19, 2025

    @hybrid897

    Please excuse my poor English. Using StabilityMatrix to update WebUI Forge Neo will uninstall torch 2.8.0+cu128 and install torch 2.8.0+cpu instead. Therefore, you must reinstall CUDA within WebUI Forge Neo

    Causes and Solutions https://github.com/Haoming02/sd-webui-forge-classic/issues/269 https://github.com/Haoming02/sd-webui-forge-classic/issues/277

    These links seem to be broken now? I'm having the same issue.

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