From: Peter Haslehurst (peter.haslehurst_at_ntlworld.com)
Date: 29 Jul 2003 02:40:34 -0700
You need to read KB article 823492. If you apply MS03-031 to SQL
Server running on NT4, then you will get access denied if you connect
using Named Pipes, unless you are logged in as an administrator. There
is a hotfix for this which seems to work though it is fiddly to apply.