Just downloaded the current installation file and ran it it Seems that the install program is having issues with creating the venv directory. After looking at previous post mine appears, at least to me, different. Tried to upload the log file, but since I’m a new user, no-can-do. So here is waht appears to be the pertinent portion of the log:
[2025-09-21 13:07:45.911] [info] & “C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\uv\win\uv.exe” “venv” “–python” “3.12” “–python-preference” “only-managed”
[2025-09-21 13:07:45.982] [info] Using
[2025-09-21 13:07:46.004] [info] CPython 3.12.11
Creating virtual environment at: .venv
error: Failed to create virtual environment
Caused by: failed to create directory .venv: The system cannot find the file specified. (os error 2)
PS C:\Users\John\Documents\ComfyUI> echo “_-end-1758474465678:$?”
[2025-09-21 13:07:46.036] [info] _-end-1758474465678:False
[2025-09-21 13:07:46.047] [error] Error creating virtual environment: Error: Failed to create virtual environment: exit code -999
at VirtualEnvironment.createVenvWithPython (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25336:13)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async descriptor.value (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25051:9)
at async VirtualEnvironment.createEnvironment (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25307:9)
at async VirtualEnvironment.create (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:25252:7)
at async _InstallationManager2.freshInstall (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:26386:5)
at async _InstallationManager2.resumeInstallation (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:26296:12)
at async _InstallationManager2.ensureInstalled (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:26243:50)
at async DesktopApp.initializeInstallation (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:27541:14)
at async DesktopApp.start (C:\Users\John\AppData\Local\Programs@comfyorgcomfyui-electron\resources\app.asar.vite\build\main.cjs:27556:26)
