I run FB 2.1 RC 2 and I want to test the windows trusted authentication
with FB. The parameter Authentication is set to 'mixed' in the
firebird.conf and for testing I use ib_sql from IBO. I can connect to a
database the native way for example with SYSDBA and masterkey, but I
have problems with windows authentication. I'm logged in on a Windows XP
system with user administrator and password xyz. When I try to connect
to a FB database with administrator and xyz, I get the error

ISC ERROR CODE:335544472

ISC ERROR MESSAGE:
Your user name and password are not defined. Ask your database
administrator to set up a Firebird login.

So what am I doing wrong, how should I use the windows authentication
the right way?

Regards

Guido