How to Fixed ComfyUI crashes or closes immediately on startup

In my case, I found 2 possible issue that cause ComfyUI trigger update & crashes on startup Most Cause: Automatic update caused issue Disable Custom Nodes / Safe Mode A broken or outdated custom node (from ComfyUI-Manager) can crash the backend before the interface loads If I do not work try to check log file And check Startup Flags if you found log pattern like this Try to add –lowvram, or –disable-xformers to your launch configuration. –highvram (Force Comfy Load Model to VRAM that can cause out of memory. Reference








