I have heard rumors of a SPAR to allow the 75xx series to work with Windows 2012 server but if its just the normal 06507 or 06508 it wont work . Microsoft uses a new SMB 3.0 system that just wont work. Best bet is to set it up as an FTP server in IIS and use ftp as your scan protocol.
Windows 2012 and 8 use the new SMB 3.0 protocol and its really a pain.