Basic Direct Access for Windows 10 PRO and home users.
It appears a feature of Windows server 2012 Essentials R2 has been removed from windows 10 PRO and Home editions. It worked until the latest upgrade last week. Previous page on this site does not show it not available except the advanced version. It worked till last week. It did have similar issues earlier in the year.
To share data in a local area can be very helpful. Use of a common shared set of data files help where you have more than one PC using the same raw data. Common data on the shared directory and the program on each computer.