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# failedToActivateDevice(_:session:error:)

Reports a device activation failure to the system so it can inform the user and clean up the session.

```
@MainActor final func failedToActivateDevice(_ device: MediaOutputDevice, session: MediaOutputSession, error: MediaDeviceError)
```

## Parameters

`device`

The device that activation failed for.

`session`

The session associated with the activation.

`error`

The error that occurred during activation.

## Discussion

Call this function when activation has failed for a device.

---

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