This message was posted on behalf of Intel Corporation
Thank you for posting in Wired Communities. No worries, I can understand what you described here. But with the error message and the mac address shown, I am sorry to inform you that the CT desktop adapter is faulty. You may contact the Intel Customer Support in your country for the replacement, here is the website you can refer to for the warranty replacement:
You may click on the upper right hand globe icon to change your preferred language for easier reference. Hope the information help.