Hey John -
Tableau Server does not support impersonating the credentials of the person in the browser when connecting to SSAS.
- Prompt the user for credentials (least friendly, most secure)
- Use Windows Authentication and have Tableau Server run with a Windows Account that has access to SSAS. Tableau Server will now connect to SSAS with this acount all the time. ("less" secure since everyone hits SSAS as the same user, more friendly)
- Do what you already discovered - hardcode a specific username/password
Thanks a lot for the info!
I know this post is nearly 3 years old, but we seem to be facing exactly the same issue now. Has there been any change on this?