nRF54L15: BLE connection error on Windows computer

[xiaodong]

We built our own hardware using the nRF54L15. It connects fine with the Android BLE Debug Assistant and has a 30% chance of connecting successfully with a Windows computer. I'm encountering the error "Failed to subscribe to characteristic: 6e400003-b5a3-f393-e0a9-e50e24dcca9e." This means the device failed to read the data characteristic.

Is there any solution?

[Menon]

Hello,

Which nRF Connect SDK version are you using? What does your custom app do, and what are the GATT permissions on the NUS TX characteristic (6e400003) and its CCCD? Do you call bt_conn_set_security() before subscribing, See zephyr bluetooth security? Which Windows version are you testing with?

Kind Regards,

Abhijith