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[GH-ISSUE #1739] [Bug]: Comfy Desktop Operation failed v0.24.1 #536
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Originally created by @asiflhr on GitHub (Jun 9, 2026).
Original GitHub issue: https://github.com/Comfy-Org/desktop/issues/1739
App Version
ComfyUI_desktop v0.24.1
Expected Behavior
It should start as v0.20 was working
Actual Behavior
When I start CompfyUI, it shows 'Operation failed' at 95%
Steps to Reproduce
Install ComfyUI Desktop v0.24.1
click ComfyUI
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@LuisAlfonsoB commented on GitHub (Jun 9, 2026):
Hi, I also just freshly installed this for the first time however I get this error
"Process exited with code 3221225477
[32m[INFO][0m setup plugin alembic.autogenerate.schemas
[32m[INFO][0m setup plugin alembic.autogenerate.tables
[32m[INFO][0m setup plugin alembic.autogenerate.types
[32m[INFO][0m setup plugin alembic.autogenerate.constraints
[32m[INFO][0m setup plugin alembic.autogenerate.defaults
[32m[INFO][0m setup plugin alembic.autogenerate.comments
[32m[INFO][0m Adding extra search path checkpoints C:\Users\EXITOPC\ComfyUI-Shared\models\checkpoints
[32m[INFO][0m Adding extra search path classifiers C:\Users\EXITOPC\ComfyUI-Shared\models\classifiers
[32m[INFO][0m Adding extra search path clip_vision C:\Users\EXITOPC\ComfyUI-Shared\models\clip_vision
[32m[INFO][0m Adding extra search path configs C:\Users\EXITOPC\ComfyUI-Shared\models\configs
[32m[INFO][0m Adding extra search path controlnet C:\Users\EXITOPC\ComfyUI-Shared\models\controlnet
[32m[INFO][0m Adding extra search path diffusers C:\Users\EXITOPC\ComfyUI-Shared\models\diffusers
[32m[INFO][0m Adding extra search path diffusion_models C:\Users\EXITOPC\ComfyUI-Shared\models\diffusion_models
[32m[INFO][0m Adding extra search path embeddings C:\Users\EXITOPC\ComfyUI-Shared\models\embeddings
[32m[INFO][0m Adding extra search path gligen C:\Users\EXITOPC\ComfyUI-Shared\models\gligen
[32m[INFO][0m Adding extra search path hypernetworks C:\Users\EXITOPC\ComfyUI-Shared\models\hypernetworks
[32m[INFO][0m Adding extra search path latent_upscale_models C:\Users\EXITOPC\ComfyUI-Shared\models\latent_upscale_models
[32m[INFO][0m Adding extra search path loras C:\Users\EXITOPC\ComfyUI-Shared\models\loras
[32m[INFO][0m Adding extra search path model_patches C:\Users\EXITOPC\ComfyUI-Shared\models\model_patches
[32m[INFO][0m Adding extra search path audio_encoders C:\Users\EXITOPC\ComfyUI-Shared\models\audio_encoders
[32m[INFO][0m Adding extra search path photomaker C:\Users\EXITOPC\ComfyUI-Shared\models\photomaker
[32m[INFO][0m Adding extra search path style_models C:\Users\EXITOPC\ComfyUI-Shared\models\style_models
[32m[INFO][0m Adding extra search path text_encoders C:\Users\EXITOPC\ComfyUI-Shared\models\text_encoders
[32m[INFO][0m Adding extra search path upscale_models C:\Users\EXITOPC\ComfyUI-Shared\models\upscale_models
[32m[INFO][0m Adding extra search path vae C:\Users\EXITOPC\ComfyUI-Shared\models\vae
[32m[INFO][0m Adding extra search path vae_approx C:\Users\EXITOPC\ComfyUI-Shared\models\vae_approx
[32m[INFO][0m Adding extra search path background_removal C:\Users\EXITOPC\ComfyUI-Shared\models\background_removal
[32m[INFO][0m Adding extra search path detection C:\Users\EXITOPC\ComfyUI-Shared\models\detection
[32m[INFO][0m Adding extra search path frame_interpolation C:\Users\EXITOPC\ComfyUI-Shared\models\frame_interpolation
[32m[INFO][0m Adding extra search path geometry_estimation C:\Users\EXITOPC\ComfyUI-Shared\models\geometry_estimation
[32m[INFO][0m Adding extra search path optical_flow C:\Users\EXITOPC\ComfyUI-Shared\models\optical_flow
[32m[INFO][0m Adding extra search path clip C:\Users\EXITOPC\ComfyUI-Shared\models\clip
[32m[INFO][0m Adding extra search path unet C:\Users\EXITOPC\ComfyUI-Shared\models\unet
[32m[INFO][0m Adding extra search path t2i_adapter C:\Users\EXITOPC\ComfyUI-Shared\models\t2i_adapter
[32m[INFO][0m Setting output directory to: C:\Users\EXITOPC\ComfyUI-Shared\output
[32m[INFO][0m Setting input directory to: C:\Users\EXITOPC\ComfyUI-Shared\input
[32m[INFO][0m [PRE] ComfyUI-Manager
Windows fatal exception: access violation
Stack (most recent call first):
File "D:\ComfyUI\ComfyUI.venv\Lib\site-packages\torch\cuda_init_.py", line 182 in is_available
File "D:\ComfyUI\ComfyUI.venv\Lib\site-packages\comfy_kitchen\backends\cuda_init_.py", line 1138 in register
File "D:\ComfyUI\ComfyUI.venv\Lib\site-packages\comfy_kitchen\backends\cuda_init.py", line 1149 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 "", line 488 in _call_with_frames_removed
File "", line 1415 in handle_fromlist
File "D:\ComfyUI\ComfyUI.venv\Lib\site-packages\comfy_kitchen_init.py", line 3 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 "D:\ComfyUI\ComfyUI\comfy\quant_ops.py", line 7 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 "D:\ComfyUI\ComfyUI\comfy\memory_management.py", line 8 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 "D:\ComfyUI\ComfyUI\comfy\utils.py", line 25 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 "D:\ComfyUI\ComfyUI\main.py", line 204 in "
@asiflhr commented on GitHub (Jun 9, 2026):
I switched to the portable version.