Codex Windows app: Voice mode fails — “Unable to start dictation”

What version of the Codex App are you using (From “About Codex” dialog)?

Codex 26.304.1528

What subscription do you have?

Business

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

Voice mode/dictation cannot start in the Codex Windows app. Error shown: “Unable to start dictation.”

What steps can reproduce the bug?

Steps to reproduce

1. Open the Codex app on Windows.
2. Open any chat/session.
3. Click Voice / start dictation.
4. Observe error

What is the expected behavior?

Expected behavior
Dictation starts and captures the microphone audio.

Additional information

_No response_