https://devzone.nordicsemi.com/f/nordic-q-a/113929/error-resource-temporarily-unavailable-cannot-lock-port-uart-error-in-nrf5340-audio-dkHi, I&#39;m using nrf5340 audio dk board. I configured UART0 with the help of nrf connect fundamental course - Link and I started transmitting the data in UART. But after sometime it stopped and shows &quot;Error Resource temporarily unavailable Cannot locken-USTelligent Community 13Wed, 14 Aug 2024 10:34:00 GMThttps://devzone.nordicsemi.com/thread/498239?ContentTypeID=1Wed, 14 Aug 2024 10:34:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4965b8df-4391-4c26-8011-ab71fcdad69flaksh<p>Hi,<br /><br />The issue is found and addressed. Opening multiple ports&nbsp;are&nbsp;the reason. Having one VCOM port open solved the issue.<br /><br />Thanks and Regards<br />Lakshmanan</p><div style="clear:both;"></div>