Just like any other system Snowflake has its fair share of seemingly random cryptic error messages like this one, net.snowflake.client.jdbc.SnowflakeSQLException: !394300!
This basically means that the user (login) is not found or not matching to what you have entered in your configuration or properties.
But no worries, first of all let DLH.io do all the Snowflake heavy lifting for you by just using our dozens of pre-built and well-maintained connectors.
Secondly, this error most often rears its head when using the more advanced public and private key pair for authorization.
Be sure to rotate your keys every 90 or so days to align with good SOC compliance and other standards.
Be sure to checkout how DLH.io saves you time and decreases your costs by using the platform built for the modern business data operations stack.