Database Vendor Code: 18

We are having problems generating CR from one of our application. The reports were generating until Wednesday 31Oct18.

TLS 1.0 was disabled on all the environments and the environment is DB MS OS 2016, SQL 2014. Crystal report is not installed on the DB and AP servers but the crystal report version on the client is 2011.

Here is the error :

System.Runtime.InteropServices.COMException (0x8004100F): Logon failed. Details: [Database Vendor Code: 18 ] Error in File <report type>.rpt: Unable to connect: incorrect log on parameters. Details: [Database Vendor Code: 18 ] at CrystalDecisions.ReportAppServer.Controllers.DatabaseControllerClass.SetTableLocation(ISCRTable CurTable, ISCRTable NewTable)

You insight and assistance will be greatly appreciated. Let me know if you have any questions.