Unable to start ComfyUI Desktop v0.8.28

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[2026-04-10 18:22:47.987] [info] Adding extra search path custom_nodes D:\F Doc & Information\AI ComfyUI\custom_nodes
Adding extra search path download_model_base D:\F Doc & Information\AI ComfyUI\models

[2026-04-10 18:22:47.989] [info] Adding extra search path custom_nodes C:\Users\localadmin\AppData\Local\Programs\ComfyUI\resources\ComfyUI\custom_nodes
Setting output directory to: D:\F Doc & Information\AI ComfyUI\output
Setting input directory to: D:\F Doc & Information\AI ComfyUI\input
Setting user directory to: D:\F Doc & Information\AI ComfyUI\user

[2026-04-10 18:22:48.776] [info] [START] Security scan
[DONE] Security scan
** ComfyUI startup time: 2026-04-10 18:22:48.776
** Platform: Windows

2026-04-10 18:22:48.778\] \[info\] \*\* Python version: 3.12.11 (main, Aug 18 2025, 19:17:54) \[MSC v.1944 64 bit (AMD64)

** Python executable: D:\F Doc & Information\AI ComfyUI.venv\Scripts\python.exe
** ComfyUI Path: C:\Users\localadmin\AppData\Local\Programs\ComfyUI\resources\ComfyUI
** ComfyUI Base Folder Path: C:\Users\localadmin\AppData\Local\Programs\ComfyUI\resources\ComfyUI
** User directory: D:\F Doc & Information\AI ComfyUI\user
** ComfyUI-Manager config path: D:\F Doc & Information\AI ComfyUI\user__manager\config.ini
** Log path: D:\F Doc & Information\AI ComfyUI\user\comfyui.log

[2026-04-10 18:22:49.255] [info] [ComfyUI-Manager] Skipped fixing the ‘comfyui-frontend-package’ dependency because the ComfyUI is outdated.

[2026-04-10 18:22:49.257] [info] [PRE] ComfyUI-Manager

[2026-04-10 18:22:50.302] [error] D:\F Doc & Information\AI ComfyUI.venv\Lib\site-packages\torch\cuda_init_.py:184: UserWarning: cudaGetDeviceCount() returned cudaErrorNotSupported, likely using older driver or on CPU machine (Triggered internally at C:\actions-runner_work\pytorch\pytorch\pytorch\c10\cuda\CUDAFunctions.cpp:88.)
return torch._C._cuda_getDeviceCount() > 0

[2026-04-10 18:22:50.889] [info] Found comfy_kitchen backend cuda: {‘available’: False, ‘disabled’: False, ‘unavailable_reason’: ‘CUDA not available on this system’, ‘capabilities’: }
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’]}
Found comfy_kitchen backend triton: {‘available’: False, ‘disabled’: True, ‘unavailable_reason’: “ImportError: No module named ‘triton’”, ‘capabilities’: }

[2026-04-10 18:22:50.894] [info] Checkpoint files will always be loaded safely.

[2026-04-10 18:22:50.918] [error] Windows fatal exception: access violation

Stack (most recent call first):
File “D:\F Doc & Information\AI ComfyUI.venv\Lib\site-packages\torch\cuda_init_.py”, line 424 in lazy_init
File "D:\F Doc & Information\AI ComfyUI.venv\Lib\site-packages\torch\cuda_init.py", line 1094 in current_device
File “C:\Users\localadmin\AppData\Local\Programs\ComfyUI\resources\ComfyUI\comfy\model_management.py”, line 206 in get_torch_device
File “C:\Users\localadmin\AppData\Local\Programs\ComfyUI\resources\ComfyUI\comfy\model_management.py”, line 256 in
File “”, line 488 in _call_with_frames_removed
File “”, line 999 in exec_module
File “”, line 935 in _load_unlocked
File “”, line 1331 in _find_and_load_unlocked
File “”, line 1360 in _find_and_load
File “C:\Users\localadmin\AppData\Local\Programs\ComfyUI\resources\ComfyUI\execution.py”, line 17 in
File “”, line 488 in _call_with_frames_removed
File “”, line 999 in exec_module
File “”, line 935 in _load_unlocked
File “”, line 1331 in _find_and_load_unlocked
File “”, line 1360 in _find_and_load
File “C:\Users\localadmin\AppData\Local\Programs\ComfyUI\resources\ComfyUI\main.py”, line 197 in