I installed 25H2, then I did everything necessary to install the Comfyui program, however, when starting it, I constantly get the same error. I thought this error was due to the new system or a bug in 25H2. I installed other versions of Python several times and the thing keeps happening (i also did a fresh install for comfyui), comfyui does not start and the same error always appears.
[ComfyUI-Manager] python -m pip not available. Falling back to uv.
[ComfyUI-Manager] Neither python -m pip nor uv are available. Cannot proceed with package operations.
Failed to execute startup-script: E:\ComfyUI_windows_portable_nvidia\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui-manager\prestartup_script.py / Neither pip nor uv are available for package management
Then I went back to 24H2, first start and everything is fine (too long to open but I was happy that the program started), I install the manager and the start is normal, I even manage to make some pictures! This morning I start the program again and the same error repeats, I really have no idea what else to do, I tried everything I could think of and what I found on the internet