title: Published report can't connect to data source after I change the data source
body: <p>I updated a report with embeded data, from SQL Server, to our company's Tableau Server. It worked perfectly. After that, the old SQL Server is going to be demised, thus I move all data to a new server, the database, schema and data are exactly the same, and update the data connection in my local reports. It still works well. </p>
  
  <p>Then I publish it again with the same configuration. The publishion is successful. However, Tableau server shows error that the database can't be connected when I open the report. Any idea? Thanks in advance.</p>
  
  <p>I just update the server, username and pass for all data connections.</p>
  
  <p><a href="https://i.stack.imgur.com/aUENU.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aUENU.jpg" alt="enter image description here"></a></p>
  
  <p><strong>Exception</strong>
  <a href="https://i.stack.imgur.com/eRSYb.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eRSYb.jpg" alt="enter image description here"></a></p>