for Windows (NFSServer) NIS Server for Windows (NIS) Password Synchronization (PasswdSync) Windows Remote Shell Service (RshSvc) Telnet Server for Windows (TelnetServer) NFS User Name Mapping (Mapsvc) NFS Authentication Server (NFSServerAuth) PCNFS Server (Pcnfsd) ActiveState Perl (Perl) 3.5 This was the final release of SFU and the only release to be distributed free of charge. It was released January 2004 and included both English and Japanese versions for Windows 2000, Windows XP Professional, and Windows Server 2003 (original release only) on x86 platforms with Internet Explorer 5.0+. It included Interix subsystem release 3.5 (build version 8.0) adding internationalization support (at least for the English version which did not have such until now) and POSIX threading. This release could only be installed to an NTFS file system (earlier versions supported FAT; this was for improved file-security requirements in Interix 3.5). The following UNIX versions were supported for NFS components: Solaris 7 and 8, Red Hat Linux 8.0, AIX 5L 5.2, and HP-UX 11i. It included the following components: Base Utilities for Interix (BaseUtils; including X11R6 and X11R5 utilities) UNIX Perl for Interix (UNIXPerl) Interix SDK (InterixSDK; including headers and libraries for development and a wrapper for Visual Studio compiler) GNU Utilities for Interix (GNUUtils, again about 9 utilities) GNU SDK for Interix (GNUSDK; including gcc and g++) NFS Client for Windows (NFSClient) NFS Gateway for Windows (NFSGateway) NFS Server for Windows (NFSServer) NIS Server for Windows (NIS) Password synchronization (PasswdSync) Windows Remote Shell Service (RshSvc) Telnet Server for Windows (TelnetServer) NFS User Name Mapping (Mapsvc) NFS Authentication Server (NFSServerAuth) PCNFS server (Pcnfsd) ActiveState Perl (Perl) Microsoft does not intend to produce any further standalone versions of SFU, opting instead for the integrated SUA. As of August 18, 2016, v3.5 is unavailable from the provided Microsoft Link. General support continued until 2011; extended support until 2014. Known problems Character translation must be used to accommodate filenames which include a colon (:) or other characters that do not comply with the naming conventions of Windows file-systems. Files with the same name but different cases are also not allowed by default, but can be enabled on installation with the side-effect of making the underlying partition's filesystem case-sensitive, even for the Win32 subsystem. Network authentication for UNIX systems relies on the insecure NIS protocol (LDAP- and Kerberos-based authentication require a third-party solution). Microsoft has released several hotfixes for Windows Services for UNIX, and at least one