ftp.microsoft.com
/bussys/winnt/sna-unsup-ed/fixes/sna211a/winnt40/readme.txt:
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SNA Server operation on Windows NT 4.0 Beta

Last updated: 2/14/96

There are currently no SNA Server updates available for operation on the
Windows NT 4.0 Beta release. This directory will be updated as problems
are found and hotfixes are generated.

Known issues:

1) When running on a MIPS computer, SNA Server Admin list boxes do not 
   appear correctly with Windows NT 4.0 beta. This is a problem in the 
   CTL3D32.DLL interface. SNA Admin can be started with a /NO3D switch 
   to prevent it from using CTL3D32.DLL.  For example:

      SNAADMIN /NO3D

2) SNA Server Admin program will encounter an application exception when
   using the Select Domain dialog to change focus to another domain when 
   running on the Windows NT 4.0 beta. To workaround this problem, rename 
   the following SNA Admin file:

     rename <snaroot>\system\snasfd.dll snasft.211