How to Enable Windows Authentication in Firebird 2.5 I am trying to enable Windows Authentication on a remote Firebird 2.5 database.  I modified the Firebird config file and changed the authentication method to 'MIXED', restarted the Firebird services but so far have still not been able to use Windows credentials.  Is there additional steps to get this working?
Few basic things things to check - 


Check user name length. Like in few other databases, this could be failing if the Windows user name length is greater than the permitted limit. From FireBird's documentation this seems to be 31.
Try using Trusted mode and if needed enforce Windows authentication.


Is this a web application connecting which is connecting to this database? If so what's the browser being currently used.