Hi @Kevin Feasel and @Pedro Faro To give a bit of background on my setup and how I got it working. 1) Create HDP 2.5 VM Sandbox in Azure and make IP static. 2) Create SQL Server 2016 VM in Azure and make IP static. 3) Install putty on SQL Server 2016 vm. 4) Create putty session to Sandbox IP with the following tunnels 10000 10015 10500 11000 19888 2222 4200 50010 50070 50075 8020 8050 8080 8088 8886 8888 9995 9996 5) Create entry in hosts for 127.0.0.1 mapping to sandbox.hortonworks.com 6) Connect to sandbox using putty 7) Open Ambari and get copies of configs core-site, hdfs-site, hive-site, mapred-site and yarn-site from sandbox and move over to C:\Program Files\Microsoft SQL Server\MSSQL13.SQL_2016\MSSQL\Binn\Polybase\Hadoop\conf\ on SQL Server 2016 vm. 😎 Restart Polybase services. 9) Follow instructions on https://hortonworks.com/hadoop-tutorial/opening-sandbox-ports-azure/ to add port 50010. 10 ) Use Ambari to add a test.csv file to HDFS under folder /user/maria_dev/data 11) Create external source CREATE EXTERNAL DATA SOURCE [Data-Source-Name] WITH ( TYPE = HADOOP, LOCATION ='hdfs://sandbox.hortonworks.com:8020', RESOURCE_MANAGER_LOCATION = 'sandbox.hortonworks.com:8050' ); 12) Create external file format CREATE EXTERNAL FILE FORMAT TextFileFormat WITH ( FORMAT_TYPE = DELIMITEDTEXT, FORMAT_OPTIONS (FIELD_TERMINATOR =',', USE_TYPE_DEFAULT = TRUE)); 13) Create external table CREATE EXTERNAL TABLE [dbo].[Test] ( CustomerID INT, CustomerName NCHAR(10), NumberOfOrders INT ) WITH (LOCATION='/user/maria_dev/data/Test.csv', DATA_SOURCE = [Data-Source-Name], FILE_FORMAT = TextFileFormat ); 14) SELECT * FROM [dbo].[Test] I am logged onto the SQL Server 2016 VM the from step 3 onwards. This is just for testing the functionality. Hope this helps ... View more