Hello- The error you have provided:   "ODBC: ERROR [HY000] [Microsoft][DriverSupport] (1170) Unexpected response received from server. Please ensure the server host and port specified for the connection are correct." - is quite obscure. The following could cause it:   a. outdated ODBC Driver b. intermittent network issue c. misconfigured or malfunctioning Load Balancer. d. invalid certificate(s) on one or few Impala coordinators (behind the Load Balancer). - each of the above or some combination of those.   In order for us to help you with troubleshooting, please open a case with Cloudera Support.   Thank you. ... View more