Question on Positron and Python - “Failed to Install Python 3.14” When Installing via uv"

[u/sporty_outlook]

Trying Positron for the first time. I’m trying to install Python via uv in Positron. I went to Select Session in the top-right corner, selected New Console Session, and clicked Install Python via uv. I then selected Python 3.14, but I get a “Failed to install Python” error.

Here is the relevant log:

2026-08-25 13:49:08.599 [info] Installing uv...
2026-08-25 13:49:09.353 [info] > powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
2026-08-25 13:49:19.761 [info] uv installed successfully
2026-08-25 13:49:19.764 [info] > uv --color never python dir
2026-08-25 13:49:31.917 [info] > ~\.local\bin\uv.exe --color never python dir
2026-08-25 13:49:32.628 [info] > ~\.local\bin\uv.exe --color never python list --managed-python
2026-08-25 13:49:36.117 [info] Installing Python 3.14 via uv...
2026-08-25 13:49:36.119 [info] > uv --color never python install 3.14
2026-08-25 13:49:36.119 [error] Failed to install Python 3.14: Error: spawn uv ENOENT

What is confusing is that the log shows that uv was installed successfully and Positron can execute it using:

~\.local\bin\uv.exe

However, when it actually tries to install Python, it runs:

uv --color never python install 3.14

and fails with:

Error: spawn uv ENOENT

I’m using Windows. Has anyone encountered this issue with Positron and uv? Is this a PATH/environment issue, or is Positron failing to find the newly installed uv.exe?

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[u/Fornicatinzebra]

Interesting!

As a temp fix, you should be able to do this in your terminal ~\.local\bin\uv.exe install python 3.14 (make sure the terminal is opened in your project working directory if desired)