I am having the same issue with version 8.1.1 connecting to a SQL server 2000 database. One thing I noticed is there is not a java.security file in the security folder, just a java file. It contained the referenced configuration ( 3DES_EDE_CBC from the jdk.tls.disabledAlgorithms ) so I am guessing it is the equivalent file. I made the update, restarted Ignition, and still have the same error. Message is:
java.sql.SQLException: Cannot create PoolableConnectionFactory (SQL Server version 8 is not supported by this driver. ClientConnectionId:1358887e-db2a-4609-a912-c59eafbdeed7)
Any other ideas?