I am using an external HDD (1TB WD Elements) with my MacBook Pro 2016 15" with TouchBar. This was no problem in the past. Yesterday I updated to 10.12.3. When I now attach the external HDD (using Apple's official USB adapter), the whole system crashes. It either restarts automatically or I need to force a restart by holding the TouchID sensor. Is there anyone with similar occurrences? This is 100% reproducible, I already filed a bug report at Apple.