Starting ComfyUI server... -> Unable to start ComfyUI Desktop - Comfy v0.8.4

Desktop Feedback Windows
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Hi, when starting ComfyUI and connecting to the server, the application stops working. I’m trying the Comfy version for AMD rx 6700 xt. Can you please advise me? Comfy v0.8.4

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Same issue here on a M4 Mac

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I’m having the same issue as well. I’m running RX 6900 XT. Here are the error lines I see in my logs

[2026-02-17 16:09:15.526] [info] Created extra_model_paths.yaml at C:\Users\Victo\AppData\Roaming\ComfyUI\extra_models_config.yaml
[2026-02-17 16:09:15.526] [error] Log rotation: cannot access log dir C:\Users\Victo\AppData\Roaming\ComfyUI\logs\comfyui.log
[2026-02-17 16:09:15.527] [info] Running command: C:\Users\Victo\Documents\ComfyUI.venv\Scripts\python.exe D:\Program Files\ComfyUI\resources\ComfyUI\main.py --user-directory C:\Users\Victo\Documents\ComfyUI\user --input-directory C:\Users\Victo\Documents\ComfyUI\input --output-directory C:\Users\Victo\Documents\ComfyUI\output --front-end-root D:\Program Files\ComfyUI\resources\ComfyUI\web_custom_versions\desktop_app --base-directory C:\Users\Victo\Documents\ComfyUI --database-url sqlite:///C:/Users/Victo/Documents/ComfyUI/user/comfyui.db --extra-model-paths-config C:\Users\Victo\AppData\Roaming\ComfyUI\extra_models_config.yaml --log-stdout --listen 127.0.0.1 --port 8000 --enable-manager in C:\Users\Victo\Documents\ComfyUI
[2026-02-17 16:09:39.011] [error] Python process exited with code 3221225477 and signal null
[2026-02-17 16:09:39.016] [error] Unhandled exception during server start Error: Python process exited with code 3221225477 and signal null
at ChildProcess. (D:\Program Files\ComfyUI\resources\app.asar.vite\build\main.cjs:38760:18)
at ChildProcess.emit (node:events:519:28)
at ChildProcess._handle.onexit (node:internal/child_process:294:12)
[2026-02-17 16:09:45.511] [error] @todesktop/runtime: alwaysResolve: Promise timed out after 30000ms
[2026-02-17 16:09:45.780] [info] @todesktop/runtime: Checking for update

[2026-02-17 16:14:18.921] [error] Python process exited with code 3221225477 and signal null
[2026-02-17 16:14:18.925] [error] Unhandled exception during server start Error: Python process exited with code 3221225477 and signal null

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4

Same..! I’m using RTX50 serie
I am unable to start ComfyUI Desktop v0.8.5.
When I open the logs, the window suddenly closes.

1 Like
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I started having this issue after updating Adrenaline drivers from 6.2.1 to 6.2.2

I haven’t tried downgrading the drivers because it broke my PC last time i did.