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Fix 'ffmpeg: command not found' on Linux - Windows Store Error 0x80073cf9: How to Fix Installation Failures-Troubleshoot venv Activation in Ubuntu 22.04

2026-06-13 13:14:43browser-issues
Fix 'ffmpeg: command not found' on Linux - Windows Store Error 0x80073cf9: How to Fix Installation Failures-Troubleshoot venv Activation in Ubuntu 22.04

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.