Hi http://doc.qt.io/qt-5/qtbluetooth-index.html Do you have BlueZ 4.x/5.x installed ?

Thank you for your answer. I didn't think this functionnality isn't supported by windows. @SGaist I find indeed your previous answer. I will look this

Can you get a stack trace for the crash ? By the way, what OS and Qt version are you running ?

@herlarbee Im using Mac El Cap. Thanks I will check out your link.