MacDebug

Verified for macOS Tahoe 26.2

How to Fix iPhone Mirroring Mic in use Errors in macOS Sequoia 15.x

Symptom: When using iPhone Mirroring on macOS Sequoia, a persistent "Microphone in use" notification appears, or the mic fails to pass through to Mac apps.

TL;DR fix

Start with Fix 1: Kill the Core Audio Daemon. If the issue persists after that, try Fix 2: Reset Screen Recording Permissions. Full Terminal commands and step-by-step instructions are in each section below.

Why this happens

The Sequoia audio subsystem (coreaudiod) sometimes fails to release the virtual microphone bridge created during the mirroring handshake.

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Fix 1: Kill the Core Audio Daemon

  1. Open Terminal.
  2. Force a restart of the audio subsystem:

sudo killall coreaudiod

  1. Re-launch the iPhone Mirroring app.

Fix 2: Reset Screen Recording Permissions

  1. Go to System Settings > Privacy & Security > Microphone.
  2. Toggle "iPhone Mirroring" off and back on.
  3. Do the same under "Screen Recording."

Tested and documented by the MacDebug team — about MacDebug. See also iPhone Mirroring Black Screen on macOS Tahoe 26.2, Sequoia iPhone Mirroring Audio Lag, or browse all guides on macdebug.