An error while communicating to amazon athena from tableau desktop

First, make sure you have the necessary IAM permissions
Next, make sure the endpoint you are connecting to is correct
Often the region is wrong
Next, make sure that the required JDBC drivers are installed
https://docs.aws.amazon.com/athena/latest/ug/connect-with-jdbc.html

Check if to connect to Amazon Athena you need ports 443 (ssl) and 444 to be open and also proper permissions are there. Also Athena connects to Tableau via an Athena JDBC driver, ensure you have proper version.

Reference

1. https://aws.amazon.com/blogs/big-data/building-aws-data-lake-visualizations-with-amazon-athena-and-tableau/
2. https://help.tableau.com/current/pro/desktop/en-us/examples_amazonathena.htm