I have a CNC machine that is attached to a Windows network and has a drive mapped for the interface to obtain instructions for its operation. I recently changed the server to Windows 2012 R2. Remapped the machine and the machine is attached to the new server. However, the machine has an interface that goes back to Windows NT 4.0. On the old server which was Windows 2003, the filenames would convert to 8.3 naming convention and load the file, read the instructions, etc. On the new server, Windows 2012 R2, the filenames do not convert. I have enabled the 8.3 names and rebooted the server. I did a fresh mapping of the folder and it is not creating the 8.3 names. I have contacted the software vendor and they told me it was a Windows issue and I can get no further support from them. Is there a way to get a Windows NT 4.0 interface to read or convert filenames to 8.3?