Thanks. I don't have the other sql server driver so downloaded the jTDS driver and it works.

Attempting a muti-user install. Have the client up and running and connecting to a SQL Server 2014 Express database. For the server: Java version - Amazon Corretto openjdk version "1.8.0_202" OpenJDK Runtime Environment Corretto-8.202.08.1 (build 1.8.0_202-b08) OpenJDK 64-Bit Server VM Cor...