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[GH-ISSUE #1558] [Bug]: First run stuck at Setting up Python Environment #457

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opened 2026-10-31 22:13:15 +00:00 by bsakaguchi · 1 comment

bsakaguchi commented

2026-10-31 22:13:15 +00:00

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Originally created by @LuCa-0 on GitHub (Jan 23, 2026).
Original GitHub issue: https://github.com/Comfy-Org/desktop/issues/1558

App Version

Latest (can't open so not sure)

Expected Behavior

The app should install

Actual Behavior

On first open it gets stuck on Setting up Python Environment and I see it wants a confirmation in the terminal but it's not interactable

Steps to Reproduce

Debug Logs

Browser Logs

No response

Settings JSON

No response

Other

No response

┆Issue is synchronized with this Notion page by Unito

Originally created by @LuCa-0 on GitHub (Jan 23, 2026). Original GitHub issue: https://github.com/Comfy-Org/desktop/issues/1558 ### App Version Latest (can't open so not sure) ### Expected Behavior The app should install ### Actual Behavior On first open it gets stuck on Setting up Python Environment and I see it wants a confirmation in the terminal but it's not interactable ### Steps to Reproduce <img width="1263" height="914" alt="Image" src="https://github.com/user-attachments/assets/25bb4c93-93ac-44e4-af18-295aebeb88ba" /> ### Debug Logs ```powershell ``` ### Browser Logs _No response_ ### Settings JSON _No response_ ### Other _No response_ ┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-1558-Bug-First-run-stuck-at-Setting-up-Python-Environment-2f16d73d3650819bbbbce56716bb5b67) by [Unito](https://www.unito.io)

bsakaguchi

2026-10-31 22:13:15 +00:00

closed this issue
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bsakaguchi commented

2026-10-31 22:13:16 +00:00

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@dosubot[bot] commented on GitHub (Jan 23, 2026):

Hi @LuCa-0! I'm Dosu and I’m helping the desktop team.

The installer hangs at "Setting up Python Environment" because the app can't handle interactive PowerShell prompts—like the "run software from an untrusted publisher" confirmation—since its subprocess doesn't connect to your keyboard, so you can't respond and the install can't continue (details). This is a known limitation and usually happens due to PowerShell execution policy restrictions or dependency conflicts.

To work around this:

Run PowerShell as administrator and set the execution policy to allow scripts before installing:
```
Set-ExecutionPolicy Unrestricted -Scope Process -Force
```
Try installing to a new, empty folder outside of OneDrive, the app directory, or any "unsafe" path (reference).
If the install is stuck, close the app, open a terminal in your install directory, and manually create the environment:
```
python -m venv .venv
.venv\Scripts\activate
pip install -r resources\ComfyUI\requirements.txt
```
If you see dependency prompts (like "Proceed (Y/n)?"), always use pip commands with -y or --yes to avoid interactive prompts (reference).
If you still have issues, delete the .venv folder and restart the app to force recreation.

If the problem persists, check for logs in %APPDATA%\ComfyUI\Logs\main.log after enabling verbose logging by setting the LOG_LEVEL environment variable to verbose (reference). This can help pinpoint what's blocking the install.

To reply, just mention @dosu.

Share context across your team and agents. Try Dosu.

@dosubot[bot] commented on GitHub (Jan 23, 2026):  Hi @LuCa-0! I'm [Dosu](https://go.dosu.dev/dosubot) and I’m helping the desktop team.  The installer hangs at "Setting up Python Environment" because the app can't handle interactive PowerShell prompts—like the "run software from an untrusted publisher" confirmation—since its subprocess doesn't connect to your keyboard, so you can't respond and the install can't continue ([details](https://github.com/Comfy-Org/desktop/issues/1402)). This is a known limitation and usually happens due to PowerShell execution policy restrictions or dependency conflicts. To work around this: - Run PowerShell as administrator and set the execution policy to allow scripts before installing: ```powershell Set-ExecutionPolicy Unrestricted -Scope Process -Force ``` - Try installing to a new, empty folder outside of OneDrive, the app directory, or any "unsafe" path ([reference](https://github.com/Comfy-Org/desktop/issues/1477)). - If the install is stuck, close the app, open a terminal in your install directory, and manually create the environment: ```powershell python -m venv .venv .venv\Scripts\activate pip install -r resources\ComfyUI\requirements.txt ``` - If you see dependency prompts (like "Proceed (Y/n)?"), always use pip commands with `-y` or `--yes` to avoid interactive prompts ([reference](https://github.com/Comfy-Org/desktop/issues/1402)). - If you still have issues, delete the `.venv` folder and restart the app to force recreation. If the problem persists, check for logs in `%APPDATA%\ComfyUI\Logs\main.log` after enabling verbose logging by setting the `LOG_LEVEL` environment variable to `verbose` ([reference](https://github.com/Comfy-Org/desktop/issues/1277)). This can help pinpoint what's blocking the install.  *To reply, just mention [@dosu](https://go.dosu.dev/dosubot?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=reply-with-mention&utm_term=Comfy-Org%2Fdesktop).* --- Share context across your team and agents. Try [Dosu](https://dosu.dev?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=knowledge-infrastructure-tagline&utm_term=Comfy-Org%2Fdesktop). [![Leave Feedback](https://img.shields.io/badge/Leave%20Feedback-555555?style=flat)](https://app.dosu.dev/response-feedback?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=knowledge-infrastructure-feedback&utm_term=Comfy-Org%2Fdesktop#message_id=bb4f12e9-9202-493f-9cb6-087ef7e52156) [![Learn about desktop with Dosu](https://img.shields.io/badge/Learn%20about%20desktop%20with%20Dosu-2f7b3f?style=flat&logo=data%3Aimage%2Fsvg%2Bxml%3Bbase64%2CPHN2ZyB3aWR0aD0iODYiIGhlaWdodD0iODkiIHZpZXdCb3g9IjAgMCA4NiA4OSIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNNS4yOTIzNiAxMi43OTI4TDE3Ljc1OTMgNi42ODE4OFY3Mi41NjY3TDUuMjkyMzYgODQuMDYxOFYxMi43OTI4WiIgZmlsbD0iI0I0QkI5MSIvPjxwYXRoIGQ9Ik0xOC4yNTc1IDczLjExOTZMNTkuMTMyOSA3Mi43NDhMNTEuNzAxMSA4Mi40MDk1TDI5LjAzMzggODYuMjkxTDYuMjM5NjIgODUuMTU1NEwxOC4yNTc1IDczLjExOTZaIiBmaWxsPSIjNzc4NTYxIi8%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%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%2BPC9zdmc%2B)](https://github.dosu.com/Comfy-Org/desktop?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=knowledge-infrastructure-learn-repo&utm_term=Comfy-Org%2Fdesktop) [![Add Dosu to your team](https://img.shields.io/badge/Add%20Dosu%20to%20your%20team-1f6feb?style=flat)](https://app.dosu.dev/signup?referrer=openSource&source=github-footer&utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=knowledge-infrastructure-add-team&utm_term=Comfy-Org%2Fdesktop)

bsakaguchi referenced this issue

2026-10-31 22:17:42 +00:00

[PR #457] [MERGED] Add custom window / native window controls #880

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