# Unable to start ComfyUI Desktop v0.8.22

**URL:** <https://forum.comfy.org/t/unable-to-start-comfyui-desktop-v0-8-22/4331>\
**Category:** Windows\
**Tags:** issue, install\
**Created:** [March 17, 2026, 11:40am UTC](https://forum.comfy.org/t/unable-to-start-comfyui-desktop-v0-8-22/4331 "2026-03-17T11:40:58Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Borevlad](https://yyz1.discourse-cdn.com/flex009/user_avatar/forum.comfy.org/borevlad/32/1073_2.png) [@Borevlad](https://forum.comfy.org/u/Borevlad)\
**Post date:** [March 17, 2026, 11:40am UTC](https://forum.comfy.org/t/unable-to-start-comfyui-desktop-v0-8-22/4331/1 "2026-03-17T11:40:58Z")

</div>

[2026-03-17 18:30:14.741] [info] Using uv at C:\Users\User\AppData\Local\Programs\ComfyUI\resources\uv\win\uv.exe  
[2026-03-17 18:30:14.742] [info] Install state: installed

2026-03-17 18:30:14.742\] \[info\] Validating installation. Recorded state: \[installed

[2026-03-17 18:30:14.745] [info] Running uv command directly: pip install --dry-run -r C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\requirements.txt  
[2026-03-17 18:30:14.745] [info] Running uv child process: uv pip install --dry-run -r C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\requirements.txt  
[2026-03-17 18:30:14.745] [info] Running command: C:\Users\User\AppData\Local\Programs\ComfyUI\resources\uv\win\uv.exe pip install --dry-run -r C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\requirements.txt in C:\Users\User\Documents\ComfyUI  
[2026-03-17 18:30:15.682] [info] Running uv command directly: pip install --dry-run -r C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\manager\_requirements.txt  
[2026-03-17 18:30:15.682] [info] Running uv child process: uv pip install --dry-run -r C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\manager\_requirements.txt  
[2026-03-17 18:30:15.682] [info] Running command: C:\Users\User\AppData\Local\Programs\ComfyUI\resources\uv\win\uv.exe pip install --dry-run -r C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\manager\_requirements.txt in C:\Users\User\Documents\ComfyUI  
[2026-03-17 18:30:16.267] [info] Validation result: isValid:true, state:installed {“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}  
[2026-03-17 18:30:16.608] [info] Server start  
[2026-03-17 18:30:16.623] [info] Running command: C:\Users\User\Documents\ComfyUI.venv\Scripts\python.exe C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\main.py --user-directory C:\Users\User\Documents\ComfyUI\user --input-directory C:\Users\User\Documents\ComfyUI\input --output-directory C:\Users\User\Documents\ComfyUI\output --front-end-root C:\Users\User\AppData\Local\Programs\ComfyUI\resources\ComfyUI\web\_custom\_versions\desktop\_app --base-directory C:\Users\User\Documents\ComfyUI --database-url sqlite:///C:/Users/User/Documents/ComfyUI/user/comfyui.db --extra-model-paths-config C:\Users\User\AppData\Roaming\ComfyUI\extra\_models\_config.yaml --log-stdout --listen 127.0.0.1 --port 8000 --enable-manager in C:\Users\User\Documents\ComfyUI  
[2026-03-17 18:30:16.714] [info] Received renderer-ready message!  
[2026-03-17 18:30:16.725] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.725] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.725] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.726] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.726] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.726] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.726] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.726] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.727] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.727] [info] Sending queued message {“channel”:“validation-update”,“data”:{“inProgress”:false,“installState”:“installed”,“basePath”:“OK”,“venvDirectory”:“OK”,“pythonInterpreter”:“OK”,“uv”:“OK”,“pythonPackages”:“OK”,“git”:“OK”,“vcRedist”:“OK”}}  
[2026-03-17 18:30:16.727] [info] Sending queued message {“channel”:“loading-progress”,“data”:{“status”:“starting-server”}}  
[2026-03-17 18:30:24.574] [error] Python process exited with code 1 and signal null  
[2026-03-17 18:30:24.586] [error] Unhandled exception during server start Error: Python process exited with code 1 and signal null  
at ChildProcess. (C:\Users\User\AppData\Local\Programs\ComfyUI\resources\app.asar.vite\build\main.cjs:38781:18)  
at ChildProcess.emit (node:events:519:28)  
at ChildProcess.\_handle.onexit (node:internal/child\_process:294:12)  
[2026-03-17 18:30:46.615] [error] @todesktop/runtime: alwaysResolve: Promise timed out after 30000ms  
[2026-03-17 18:30:47.004] [info] @todesktop/runtime: Checking for update  
[2026-03-17 18:30:47.004] [info] @todesktop/runtime: AutoUpdater: checking-for-update  
[2026-03-17 18:30:48.094] [info] @todesktop/runtime: Update for version 0.8.22 is not available (latest version: 0.8.22, downgrade is allowed).  
[2026-03-17 18:30:48.094] [info] @todesktop/runtime: AutoUpdater: update-not-available {“version”:“0.8.22”,“files”:[{“url”:“ComfyUI Setup 0.8.22 - Build 260315m2cxmfh1l-x64.exe”,“sha512”:“yefr4daOnk8KyAXbZoyzd5nrE8eioST1bbctJ6Yv0W1xIHm3IOUdCE6/mook/BPq3Wi/IkJKIRGtYlBrj0i+Ww==”,“size”:136356872}],“path”:“ComfyUI Setup 0.8.22 - Build 260315m2cxmfh1l-x64.exe”,“sha512”:“yefr4daOnk8KyAXbZoyzd5nrE8eioST1bbctJ6Yv0W1xIHm3IOUdCE6/mook/BPq3Wi/IkJKIRGtYlBrj0i+Ww==”,“releaseDate”:“2026-03-15T15:38:39.411Z”}