Any bros know how to fix this, just happen today need upgrade and the log said as below, [圖片]

Hi ak8964, You can delete the “uv“ folder (C:\Users\userName\AppData\Roaming\uv) and reinstall comfyUI

多试几次，在中国你懂的，实在不行科学上网。我是大清早下载才成功的。

任务管理器中关掉你所有的Python(因为我也不知道哪个Python是comfyui的, 并且我当时没有启动扔和其他的python程序),或者重启重新打开comfyui就行. 原理应该是之前没关干净, 这个目录被其他进程占用.

PS D:\ComfyUI> & “C:\Program Files\ComfyUI\resources\uv\win\uv.exe” “venv” “–python” “3.12” “–python-preference” “only-managed” Using CPython 3.12.11 Creating virtual environment at: .venv ? A virtual environment already exists at .venv. Do you want to replace it? [y/n] › yes hint: Use the --cle…

我的也是这个情况，有解决方法了吗

[image] saurabh121: You can delete the “uv“ folder (C:\Users\userName\AppData\Roaming\uv) and reinstall comfyUI Just tried this and it broke my install

I restarted comfy several times, clearing UV cache, restarting Comfy for the 10th time, running the update 3 more times, and finally it booted and is running v0.5.57, Hopefully is sticks this time, but even in past 10 minutes it reverted to v0.5.52 once.

Same with you, I am in France. 我跟你一个情况，我在法国。

桌面版在安装的时候，创建虚拟环境后没有将需要的python包放入，也就是下载的包全在其它缓存文件无法移动到venv文件。且每次在重新启动的时候都会从镜像下载torch,而不是先检查是否存在，无限下载，然后卡住。所以手动安装吧，使用镜像下载资源，1个小时搞定。

Fail to Install python packages Python packages that are required to run ComfyUI are not installed

Desktop Feedback Windows

LordofRed October 6, 2025, 10:23am 16

I got this error:

Topic		Replies	Views
MacStudio Sequoia 15.1 cannot open comfyui 0.4.19 Mac issue , starting-comfyui	9	599	February 20, 2025
ComfyUI suddenly fails to find Python package under Windows Windows issue , starting-comfyui	2	3662	January 9, 2026
The latest ComfyUI Desktop for windows launch failed Windows issue , install , legacy-version	1	1147	March 15, 2026
ComfyUI v0.3.33 -x64 fails to install Desktop Feedback issue , install	16	1541	December 24, 2024
Unable to start ComfyUI Windows issue	18	5272	December 5, 2025

Fail to Install python packages Python packages that are required to run ComfyUI are not installed

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