How to Restore a Missing Audio MIDI Setup App on Mac
A practical guide to restoring the Audio MIDI Setup app on macOS, including where it lives, how to reopen it, and how to check whether it is truly missing.
Essential answer
Audio MIDI Setup is a built-in macOS utility. On most current macOS versions it is not something you install separately from a download, so the practical fix is usually to reopen it from its normal location, find it through Spotlight, or confirm whether it was removed from the Applications folder. The best restoration path changes if the app is still present but hard to find, if it was moved, or if macOS itself needs to be reinstalled.
How to reopen Audio MIDI Setup
Start with the checks that do not change system files. First, open Spotlight by pressing Command-Space, type Audio MIDI Setup, and press Return. If Spotlight finds it, the app is still available; open it and confirm that the Audio Devices and MIDI Studio sections appear.
If Spotlight does not find it, open Finder and choose Go to Folder from the Go menu. Enter the following path without quote marks: /System/Applications/Utilities/. Look for Audio MIDI Setup.app. If it is there, double-click it to open it. The app is also often present at /Applications/Utilities/Audio MIDI Setup.app, but the exact location can depend on the macOS version.
If the app appears to be missing
A Spotlight failure alone does not prove that the app is missing. Spotlight can miss system utilities while its index is incomplete or while a search setting limits results. Open the Utilities folder directly before concluding that Audio MIDI Setup must be restored.
When the app is absent from both normal locations, you may be able to restore it by reinstalling macOS. Use macOS Recovery or the reinstall option available from System Settings, then follow the installer without erasing the disk. This can replace missing system utilities while keeping user data in place. Make a current backup before reinstalling because installation outcomes can vary by Mac model and macOS version.
How to check whether restoration worked
After reopening or reinstalling, launch Audio MIDI Setup and look at the sidebar. Your connected audio input and output devices should be listed. Creating a simple aggregate device is a practical completion check: click the Add button in the Audio Devices window and choose Create Aggregate Device. Use an unused name, close the window, and reopen Audio MIDI Setup. If the aggregate device remains listed, the utility is functioning.
What this check covers
This confirms that the Audio MIDI Setup application can run and modify its own audio-device view. It does not test microphone privacy permission, browser capture access, cable operation, or whether a specific app can record audio. If a microphone is detected but silent, use separate permission and input-selection checks. If an audio device is missing from the list, the next likely checks are its physical connection, power, driver, and whether another macOS input or output is selected.