Error "Unable to start comfy ui desktop"

Desktop Feedback
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1

after I installed today and it is giving me error on first start, dont have any idea on it.

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after clicking on troubleshoot

i tried clearing UV cache and also reinstall comfyui but error remains same.

1 Like
2

after clicking on troubleshoot

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image798×1016 53.6 KB

i tried clearing UV cache and also reinstall comfyui but error remains same.

here is the log file:
[2026-01-13 10:57:09.858] [info] Adding extra search path custom_nodes C:\Users\Rahul\Documents\ComfyUI\custom_nodes
Adding extra search path download_model_base C:\Users\Rahul\Documents\ComfyUI\models

[2026-01-13 10:57:09.859] [info] Adding extra search path custom_nodes C:\Users\Rahul\AppData\Local\Programs\ComfyUI\resources\ComfyUI\custom_nodes
Setting output directory to: C:\Users\Rahul\Documents\ComfyUI\output
Setting input directory to: C:\Users\Rahul\Documents\ComfyUI\input
Setting user directory to: C:\Users\Rahul\Documents\ComfyUI\user

[2026-01-13 10:57:11.615] [info] [START] Security scan
[DONE] Security scan
** ComfyUI startup time:
[2026-01-13 10:57:11.616] [info] 2026-01-13 10:57:11.614
** Platform: Windows
** Python version: 3.12.11 (main, Aug 18 2025, 19:17:54) [MSC v.1944 64 bit (AMD64)]
** Python executable: C:\Users\Rahul\Documents\ComfyUI.venv\Scripts\python.exe
** ComfyUI Path: C:\Users\Rahul\AppData\Local\Programs\ComfyUI\resources\ComfyUI
** ComfyUI Base Folder Path: C:\Users\Rahul\AppData\Local\Programs\ComfyUI\resources\ComfyUI
** User directory: C:\Users\Rahul\Documents\ComfyUI\user
** ComfyUI-Manager config path: C:\Users\Rahul\Documents\ComfyUI\user__manager\config.ini
** Log path: C:\Users\Rahul\Documents\ComfyUI\user\comfyui.log

[2026-01-13 10:57:12.408] [info] [ComfyUI-Manager] Skipped fixing the ‘comfyui-frontend-package’ dependency because the ComfyUI is outdated.

[2026-01-13 10:57:12.409] [info] [PRE] ComfyUI-Manager

[2026-01-13 10:57:16.380] [info] Checkpoint files will always be loaded safely.

2 Likes
3

Joined just now hoping I could use these forums to solve the same issue. I’m unable to progress beyond ‘Unable to start comfyUI desktop’

4

I have the same problem. And did exactly the same - reinstall, cleaned uv cache, reinstall again, deleted all folders with comfy, deleted python, again reinstall all. Now I have exactly the same troubleshooting list: clear uv cashe and reinstall comfy
Any ideas?

5

Having the same issue!

6

I have the same problem since last Saturday.