Error ComfyUI refuses to run - Error: no available ports found between 8000 and 9000

Desktop Feedback Windows
,
1

I made a mistake in the ComfyUI GUI and changed the ComfyUI server from 127.0.0.1 to 127.0.0.1,192.168.10.10 - yep didn’t read the manual - my bad. But now regardless of what I do I get the same error message: Error: no available ports found between 8000 and 9000

I do a “netstat -oan | findstr :80” and nothing is taking up the ports. I have rebooted several times and still the same. I tied to install the comfyui-portiable version on a different drive, same error. I renamed all the folders in C:\ComfyUI, C:\users\pichezz\AppData\Roaming, and C:\Users\pichezz\AppData\Local, and then tried a fresh install of the comfyui.exe and it too fails with the same error.

HELP!

2

Neat error! We should make sure this can’t happen.

If you installed to the default location, you should have a ComfyUI folder in your Documents. Please open this file in a text editor:

Documents\ComfyUI\user\default\comfy.settings.json

You should be able to find the two-IP string you set (with e.g. Ctrl + F). Just change that back to 127.0.0.1 and you should be good to go.

3

yep looked at that file, but it doesn’t seem to hold the changes. I have two other PCs with ComfyUI and I looked at their files as well. I even thought of copy one of tehir JSON files over, but sadly the same exact error.

Out of frustration I did a check-point recovery / restore from 3 days ago. Now ComfyUI isn’t installed, and I can try and re-install. I get further, but the “ComfyUI Setup 0.4.72 - x64.exe“ thinks that python cannot be found now. In the past I thought python was installed by the app, or am I just tired and forgetting things now.

ComfyUI-install-failure
ComfyUI-install-failure1007×758 26.3 KB

4

Yeah that’s a hard link issue from deleting the destination file by the look of it.

If you have a decent internet connection, the fastest solution is to just delete the .venv folder in your Documents\ComfyUI, and backup/delete (or just move) your user/default/comfy.settings.json file.

This should regenerate everything on next load. If it doesn’t, please let us know - there’s more to do and we want to fix this so it doesn’t happen to you or anyone else again.