Hi Rolf,
Yes, I have ticked the C drive box. It just tested again on Docker version 1.11.1 (build 5604cbe) on the work Dell PC and it fails. I tested the same version on my personal laptop and it works. Both have the latest Windows 10 update. The work PC is using Active Directory Windows Auth if that matters. Any other differences or PC specs you would like me to report back?
thanks,
Cameron