Hi Cornelis,

Is the content of the command prompt exactly as above? If so "tableau resfreshextract" looks to be a typing error. Also, for server name please try --server instead of -s, like in the example command from Tableau Data Extract Command-Line Utility - Tableau:

C:\Program Files\Tableau\Tableau 2019.4\bin>tableau refreshextract --server https://our_server_name --username OurServerSignIn --password "OurServerPwd" --project "New Animations" --datasource "CurrentYrOverYrStats" --source-username OurDatabaseSignIn --source-password "OurDatabasePassword"

-Paul

Along with what Paul said, if you are referencing the site in the command, it should just be the site id, not the full URL.  Your site id is adgilemedia

Brandon Babbitt

Senior Tableau Online Engineer

Tableau Software