Creating connection to SQL Server 2014 in SQL Developer 4.0 gives the error "Invalid Column name 'suid' when trying to expand database

There was an enhancement request logged recently to support migrations from SQL Server 2012, 2014, and 2016.  Such migrations may work in recent SQL Developer versions, but there is no guarantee -- specifically, the enhancement request mentions an issue with migration from SQL Server 2014.

In the SQL Developer code base, there are plugins to support migrations up through SQL Server 2012, so perhaps the enhancement request in fact only applies to 2014 and 2016. In terms of suid, I see it referenced in the Sybase migration code as well as SQL Server 7 code, but not elsewhere, so maybe that is one of the things that will be addressed in the enhancement.

that was a bug we fixed i'm pretty sure, have you tried this in 17.3? 4.0 is old.

You are absolutely correct.  Using the jtds-1.3.1.jar, SQL Developer 4.0.3.16.84 against our 2014 Express instance gets the Invalid column name 'suid' when trying to open any of its databases.  The same scenario using the latest 17.3.0.271.2323 works fine.

I should have checked first rather than assuming a plugin specifically for 2014 would be required to access SQL Server 2014.