Just recently replaced a failing Server 2003 server with a Buffalo NAS unit running Server 2012 Storage Server R2 - this is a small shop so this unit is working nicely so far with the following exception.
Transferred files off the Server 2003 box onto a NAS share and all operations are functioning properly for all users.....EXCEPT 2 MAC users who access files off a share setup for these MAC users to work with. When these users browse the Window share using "Finder" - they do the initial connect fine. The drive is mounted and an alias is setup on their desktop. All the files will display in the share for a few seconds..and then the file share window will do a refresh...and all the files disappear. The files are still on the share..they just disappear from the MAC view. It's the oddest issue. No problem for any of the Window users...just happening to these 2 MAC users.
My last effort today was to add the username/password these MAC users use when they log onto their MAC systems (they don't have to put in the password..the MAC's boot straight to a desktop after a restart/power-up) - I added these same username/password to the "Local Users and Groups" on the Server 2012 - re-propagated permissions on the share...still no go.
Looking for a life-line as I'm out of ideas...help?