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claude-code - 💡(How to fix) Fix Voice mode fails to access audio device on WSL2 + WSLg (Windows 11)

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/voice reports "Voice mode could not access an audio device in WSL" despite PulseAudio being fully functional via WSLg.

Root Cause

/voice reports "Voice mode could not access an audio device in WSL" despite PulseAudio being fully functional via WSLg.

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Description

/voice reports "Voice mode could not access an audio device in WSL" despite PulseAudio being fully functional via WSLg.

Environment

  • OS: Windows 11
  • WSL: WSL2 with WSLg active
  • Claude Code: v2.1.133

Audio setup

  • PulseAudio server running at unix:/mnt/wslg/PulseServer
  • PULSE_SERVER=unix:/mnt/wslg/PulseServer correctly set in environment
  • RDPSource present (status: SUSPENDED — normal when idle, activates on use)
  • Default Windows input device: Realtek Microphone Array (Status: OK)
  • parecord successfully captures audio

Steps to reproduce

  1. Open Claude Code in WSL2 terminal on Windows 11
  2. Type /voice

Expected behavior

Voice dictation activates and uses the PulseAudio RDPSource forwarded via WSLg.

Actual behavior

Voice mode could not access an audio device in WSL. WSL2 with WSLg (Windows 11) provides audio via PulseAudio — if you are on Windows 10 or WSL1, run Claude Code in native Windows instead.

Additional context

parecord can record successfully, confirming the mic and PulseAudio stack work. The issue is in how Claude Code opens the audio device, not the WSLg infrastructure.

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FAQ

Expected behavior

Voice dictation activates and uses the PulseAudio RDPSource forwarded via WSLg.

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claude-code - 💡(How to fix) Fix Voice mode fails to access audio device on WSL2 + WSLg (Windows 11)