https://devzone.nordicsemi.com/f/nordic-q-a/123237/bluetooth-pairing-bonding-issue-with-nrf54l15Hello, We are encountering issues in our application where we aim to use Bluetooth Secure Pairing (Secure Connections) and bonding for our Bluetooth service. Our application operates as a Bluetooth peripheral. Secure pairing and bonding work correctlyen-USTelligent Community 13Thu, 24 Jul 2025 17:57:20 GMThttps://devzone.nordicsemi.com/thread/543559?ContentTypeID=1Thu, 24 Jul 2025 17:57:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:74d2eb4f-9d0d-44a5-9d69-d85e6ec720c1Amanda Hsieh<p>Hi,&nbsp;</p> [quote user=""]When connecting with the&nbsp; nRF Connect for Desktop (Bluetooth Low Energy) with secure pairing and bonding enabled, only the initial connection is successful. Subsequent reconnections fail unless bonding information is deleted.[/quote] <p>I think the issue is the&nbsp;<span>nRF Connect for Desktop (Bluetooth Low Energy) app. I have test your project, and it can connect and reconnect without issue after powering off/on the DK or turning off/on BLE on Window 10 PC.&nbsp;</span></p> <p><span>You can use the Android/iOS nRF Connect apps or use the BLE on the Window PC as workaround solutions.&nbsp;</span></p> <p><span><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1753379650426v1.png" alt=" " /></span></p> <p>Regards,<br />Amanda H.</p><div style="clear:both;"></div>