Answer

1. Ensure Tableau Desktop is upgraded to Tableau Desktop to a recent version. For more information, see Upgrading Tableau Desktop.
2. In Tableau Desktop, select Server > Start Tableau Bridge Client
3. Log in to Tableau Cloud 
4. Under Settings > Tableau Bridge, select "Allow Tableau Bridge to maintain live connections to on-premises data."
5. Log on to Windows as a local administrator to allow the Bridge Client to run continuously. See Run Tableau Bridge as a Windows service for instructions.

Additional Information