# Can't Start ComfyUI 0.8.25

**URL:** <https://forum.comfy.org/t/cant-start-comfyui-0-8-25/4350>\
**Category:** Windows\
**Tags:** issue, starting-comfyui\
**Created:** [March 23, 2026, 10:00am UTC](https://forum.comfy.org/t/cant-start-comfyui-0-8-25/4350 "2026-03-23T10:00:31Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![Bexley](https://avatars.discourse-cdn.com/v4/letter/b/db5fbb/32.png) [@Bexley](https://forum.comfy.org/u/Bexley)\
**Post date:** [March 23, 2026, 10:00am UTC](https://forum.comfy.org/t/cant-start-comfyui-0-8-25/4350/1 "2026-03-23T10:00:32Z")

</div>

Installed new update, restarted, reinstalled, dumped cache, etc.

Still not working, same errors.

What is going on?

This is the Log:

[2026-03-23 05:47:06.354] [info] Adding extra search path custom\_nodes C:\Users\Owen\Documents\ComfyUI\custom\_nodes  
Adding extra search path download\_model\_base C:\Users\Owen\Documents\ComfyUI\models

[2026-03-23 05:47:06.355] [info] Adding extra search path custom\_nodes C:\ComfyUI\resources\ComfyUI\custom\_nodes  
Setting output directory to: C:\Users\Owen\Documents\ComfyUI\output  
Setting input directory to: C:\Users\Owen\Documents\ComfyUI\input  
Setting user directory to: C:\Users\Owen\Documents\ComfyUI\user

[2026-03-23 05:47:08.126] [info] [START] Security scan  
[DONE] Security scan  
\*\* ComfyUI startup time:  
[2026-03-23 05:47:08.127] [info] 2026-03-23 05:47:08.126  
\*\* Platform: Windows  
\*\* Python version: 3.12.9 (main, Feb 12 2025, 14:52:31) [MSC v.1942 64 bit (AMD64)]  
\*\* Python executable: C:\Users\Owen\Documents\ComfyUI.venv\Scripts\python.exe  
\*\* ComfyUI Path: C:\ComfyUI\resources\ComfyUI  
\*\* ComfyUI Base Folder Path: C:\ComfyUI\resources\ComfyUI  
\*\* User directory: C:\Users\Owen\Documents\ComfyUI\user  
\*\* ComfyUI-Manager config path: C:\Users\Owen\Documents\ComfyUI\user\_\_manager\config.ini  
\*\* Log path: C:\Users\Owen\Documents\ComfyUI\user\comfyui.log

[2026-03-23 05:47:09.888] [info] [ComfyUI-Manager] Skipped fixing the ‘comfyui-frontend-package’ dependency because the ComfyUI is outdated.

[2026-03-23 05:47:09.889] [info] [PRE] ComfyUI-Manager

[2026-03-23 05:47:12.682] [info] Found comfy\_kitchen backend eager: {‘available’: True, ‘disabled’: False, ‘unavailable\_reason’: None, ‘capabilities’: [‘apply\_rope’, ‘apply\_rope1’, ‘dequantize\_mxfp8’, ‘dequantize\_nvfp4’, ‘dequantize\_per\_tensor\_fp8’, ‘quantize\_mxfp8’, ‘quantize\_nvfp4’, ‘quantize\_per\_tensor\_fp8’, ‘scaled\_mm\_mxfp8’, ‘scaled\_mm\_nvfp4’]}

[2026-03-23 05:47:12.684] [info] Found comfy\_kitchen backend cuda: {‘available’: False, ‘disabled’: True, ‘unavailable\_reason’: ‘CUDA not available on this system’, ‘capabilities’: }  
Found comfy\_kitchen backend triton: {‘available’: False, ‘disabled’: True, ‘unavailable\_reason’: “ImportError: No module named ‘triton’”, ‘capabilities’: }

[2026-03-23 05:47:12.688] [info] Checkpoint files will always be loaded safely.

[2026-03-23 05:47:12.717] [error] Traceback (most recent call last):

[2026-03-23 05:47:12.718] [error] File “C:\ComfyUI\resources\ComfyUI\main.py”, line 197, in  
import execution  
File “C:\ComfyUI\resources\ComfyUI\execution.py”, line 17, in

[2026-03-23 05:47:12.718] [error] import comfy.model\_management  
File “C:\ComfyUI\resources\ComfyUI\comfy\model\_management.py”, line 256, in

[2026-03-23 05:47:12.719] [error] total\_vram = get\_total\_memory(get\_torch\_device()) / (1024 \* 1024)

2026-03-23 05:47:12.719\] \[error

[2026-03-23 05:47:12.720] [error] ^^^^^  
[2026-03-23 05:47:12.721] [error] ^^^^^^^^  
[2026-03-23 05:47:12.721] [error] ^^^^^  
File “C:\ComfyUI\resources\ComfyUI\comfy\model\_management.py”, line 206, in get\_torch\_device

[2026-03-23 05:47:12.722] [error] return torch.device(torch.cuda.current\_device())

2026-03-23 05:47:12.722\] \[error

[2026-03-23 05:47:12.723] [error] ^^^^^^^^^^  
[2026-03-23 05:47:12.723] [error] ^^^^^^^^^^^^  
[2026-03-23 05:47:12.724] [error] ^^^^^  
File “C:\Users\Owen\Documents\ComfyUI.venv\Lib\site-packages\torch\cuda\__init_\_.py”, line 1071, in current\_device

[2026-03-23 05:47:12.724] [error] _lazy\_init()  
File "C:\Users\Owen\Documents\ComfyUI.venv\Lib\site-packages\torch\cuda\_init_.py", line 403, in \_lazy\_init

[2026-03-23 05:47:12.725] [error] raise AssertionError(“Torch not compiled with CUDA enabled”)  
AssertionError: Torch not compiled with CUDA enabled

---

_[View the full topic](https://forum.comfy.org/t/cant-start-comfyui-0-8-25/4350)._