IssueAfter changing workbook or published data source ownership and after refreshing workbook containing published extract or connecting to published data source, the followin error might occur:
No Tableau Server user found.
Additionally, the following Tabcmd error might occur:
com.tableausoftware.nativeapi.dll.DataSourceException: No Tableau Server user found. class DataSourceException Unable to connect to the server "<servername>". Check that the server is running and that you have access privileges to the requested database.