Consider the following scenario:
- You use Microsoft SQL Server 2016 Reporting Services (SSRS 2016).
- You upload a report that contains an expression-based connection string to the SSRS, and configure the data source settings.
- When you try to save the credentials in the data source setting, you may notice that the text box that contains the expression-based connection string will be cleared out and the report fails to run.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.