Thank you. The camera permission is already set. Here the whole output when reactivating the app: StartScanning 08-11 11:03:46.658 I/mono-stdout(11677): StartScanning 08-11 11:03:46.658 D/ZXing.Net.Mobile(11677): Checking Camera Permissions... Perform a runtime permission check – An Android app must request permission from the user in order to access external storage. This means that a run time permission request should be performed prior to any file access. The guide Permissions In Xamarin.Android contains more details on Android permissions.