# Trouble with installation

**URL:** <https://forum.comfy.org/t/trouble-with-installation/2770>\
**Category:** Windows\
**Tags:** issue, install\
**Created:** [June 4, 2025, 4:57pm UTC](https://forum.comfy.org/t/trouble-with-installation/2770 "2025-06-04T16:57:05Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![oZoNe64](https://avatars.discourse-cdn.com/v4/letter/o/9de053/32.png) [@oZoNe64](https://forum.comfy.org/u/oZoNe64)\
**Post date:** [June 4, 2025, 4:57pm UTC](https://forum.comfy.org/t/trouble-with-installation/2770/1 "2025-06-04T16:57:06Z")

</div>

Hi,

Having trouble installing Compfy on my computer. I have installed the latest versions of Git, Python, and Powershell. Here is my log. Any help would be greatly appreciated.

[2025-06-04 12:25:57.800] [info] Using uv at C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\uv\win\uv.exe  
[2025-06-04 12:25:57.801] [info] Install state: started  
[2025-06-04 12:25:57.802] [info] Starting installation.  
[2025-06-04 12:27:19.888] [info] Creating ComfyUI directories in C:\Users\Stephen\Documents\ComfyUI  
[2025-06-04 12:27:19.889] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\custom\_nodes  
[2025-06-04 12:27:19.890] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\input  
[2025-06-04 12:27:19.891] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\output  
[2025-06-04 12:27:19.891] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\user  
[2025-06-04 12:27:19.892] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\user\default  
[2025-06-04 12:27:19.893] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models  
[2025-06-04 12:27:19.894] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\checkpoints  
[2025-06-04 12:27:19.894] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\clip  
[2025-06-04 12:27:19.895] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\clip\_vision  
[2025-06-04 12:27:19.896] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\configs  
[2025-06-04 12:27:19.896] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\controlnet  
[2025-06-04 12:27:19.897] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\diffusers  
[2025-06-04 12:27:19.898] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\diffusion\_models  
[2025-06-04 12:27:19.898] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\embeddings  
[2025-06-04 12:27:19.899] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\gligen  
[2025-06-04 12:27:19.900] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\hypernetworks  
[2025-06-04 12:27:19.901] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\loras  
[2025-06-04 12:27:19.902] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\photomaker  
[2025-06-04 12:27:19.903] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\style\_models  
[2025-06-04 12:27:19.903] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\text\_encoders  
[2025-06-04 12:27:19.904] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\unet  
[2025-06-04 12:27:19.905] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\upscale\_models  
[2025-06-04 12:27:19.905] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\vae  
[2025-06-04 12:27:19.906] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\vae\_approx  
[2025-06-04 12:27:19.907] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\animatediff\_models  
[2025-06-04 12:27:19.907] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\animatediff\_motion\_lora  
[2025-06-04 12:27:19.908] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\animatediff\_video\_formats  
[2025-06-04 12:27:19.909] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\liveportrait  
[2025-06-04 12:27:19.909] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\insightface  
[2025-06-04 12:27:19.910] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\insightface\buffalo\_1  
[2025-06-04 12:27:19.911] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\blip  
[2025-06-04 12:27:19.911] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\blip\checkpoints  
[2025-06-04 12:27:19.912] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\CogVideo  
[2025-06-04 12:27:19.913] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\xlabs  
[2025-06-04 12:27:19.913] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\xlabs\loras  
[2025-06-04 12:27:19.914] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\xlabs\controlnets  
[2025-06-04 12:27:19.915] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\layerstyle  
[2025-06-04 12:27:19.916] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\LLM  
[2025-06-04 12:27:19.916] [info] Directory already exists: C:\Users\Stephen\Documents\ComfyUI\models\Joy\_caption  
[2025-06-04 12:27:19.924] [info] Wrote install options to comfy settings file.  
[2025-06-04 12:27:19.926] [info] Creating model config files in C:\Users\Stephen\AppData\Roaming\ComfyUI\extra\_models\_config.yaml  
[2025-06-04 12:27:19.934] [info] Created extra\_model\_paths.yaml at C:\Users\Stephen\AppData\Roaming\ComfyUI\extra\_models\_config.yaml  
[2025-06-04 12:27:19.940] [info] Using uv at C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\uv\win\uv.exe  
[2025-06-04 12:27:19.944] [info] Creating virtual environment at C:\Users\Stephen\Documents\ComfyUI.venv with python 3.12  
[2025-06-04 12:27:19.945] [info] Running uv command: & “C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\uv\win\uv.exe” “venv” “–python” “3.12” “–python-preference” “only-managed”  
[2025-06-04 12:27:20.083] [info] Received renderer-ready message!  
[2025-06-04 12:27:20.084] [info] Sending queued message {“channel”:“loading-progress”,“data”:{“status”:“python-setup”}}  
[2025-06-04 12:27:20.097] [info]  
[2025-06-04 12:27:20.226] [info] Windows PowerShell  
Copyright (C) Microsoft Corporation. All rights reserved.Install the latest PowerShell for new features and improvements! [Search - Microsoft Bing](https://aka.ms/PSWindowse)]0;C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe  
[2025-06-04 12:27:20.248] [info]  
[2025-06-04 12:27:20.453] [info] PS C:\Users\Stephen\Documents\ComfyUI\>  
[2025-06-04 12:27:20.544] [info]  
[2025-06-04 12:27:20.562] [info] \> &  
[2025-06-04 12:27:20.589] [info]  
[2025-06-04 12:27:20.599] [info] \> & “C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\uv\win\uv.exe” “venv” “–python” “3.12” “–python-preference” “only-managed”

[2025-06-04 12:27:22.794] [info] x Querying Python at  
| `C:\Users\Stephen\AppData\Roaming\uv\python\cpython-3.12.9-windows-x86_64-none\python.exe`  
| returned an invalid response: EOF while parsing a value at line 1 column 0  
[2025-06-04 12:27:22.813] [info]

[2025-06-04 12:27:22.833] [info] PS C:\Users\Stephen\Documents\ComfyUI\> echo “\_-end-1749054439946:$?”

[2025-06-04 12:27:23.111] [info] \_-end-1749054439946:False  
[2025-06-04 12:27:23.123] [error] Error creating virtual environment: Error: Failed to create virtual environment: exit code -999  
at VirtualEnvironment.createVenvWithPython (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25127:13)  
at process.processTicksAndRejections (node:internal/process/task\_queues:95:5)  
at async descriptor.value (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:24856:9)  
at async VirtualEnvironment.createEnvironment (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25099:7)  
at async VirtualEnvironment.create (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25058:7)  
at async \_b.freshInstall (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:26063:5)  
at async \_b.resumeInstallation (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25979:12)  
at async \_b.ensureInstalled (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25949:50)  
at async DesktopApp.initializeInstallation (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:27296:14)  
at async DesktopApp.start (C:\Users\Stephen\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:27310:26)  
[2025-06-04 12:34:56.289] [info] App window closed.  
[2025-06-04 12:34:56.332] [info] Quitting ComfyUI because window all closed  
[2025-06-04 12:36:49.581] [info] Starting app v0.4.51