I found a similar post on this topic and it looks like Leonardo Dutra encountered the same error msg you described. When he contacted Tableau Support the recommendation was to repair the .Net installation, so that may be worth a try...?
There are also some links in this post by Sebastian Sofariu that are worth reviewing....
Can you please post back to let us know the outcome?
Many thanks, Ciara
Thanks Ciara. We talked to Tableau Technical support and their response is below. However, before we began to test the workaround, it has started to work for us. We suspect an update to .Net may have influenced this but cannot be sure. All we know for sure is that some sort of patching/ set up changes have definately allowed us to connect. Also having up to date client libraries is a must.
" I understand that when connecting to Azure Analysis Services from Tableau Desktop, the following error occurs: "Database error 0x80004005: COM error: COM error: mscorlib".
This error may occur because the ability to connect to Microsoft Azure data sources using the following authentication types is currently not built into the product:
- Active Directory Integrated Authentication
- Active Directory Universal Authentication
- Active Directory Password Authentication
- Multi Factor authentication
We have an existing enhancement request for Tableau Desktop to support the above authentication types. I have attached this case to that enhancement request which will help our Product Managers gauge the demand for this feature.
To voice your support for the future implementation of such a feature, please vote on the following Community Idea:
As a possible workaround, please create a guest (B2B collaboration) user account for use with Tableau. For more information about such user accounts, please see the following Microsoft article:
Interesting. Thanks for the update Bill, glad to hear its resolved.