You may encounter the following error message when either launching FL Studio or changing your selected Audio Device.
This error message generally indicates that the selected ASIO driver is currently unavailable or in use by another application. You should confirm the following:
1. The hardware associated with the selected ASIO driver is properly connected and recognized by Windows.
2. You receive output from the device and selected driver outside of FL Studio.
3. No other applications are using the selected ASIO driver.
If necessary, it's recommended that you restart your computer and check whether the error message persists. If the error persists it may be necessary to uninstall and reinstall the latest ASIO driver for your hardware.
If you're using ASIO4ALL refer to ASIO4ALL Troubleshooting.
Image-Line Support Team