Hi everybody!
I have the following issue with SQL Server Reporting web part.
The project farm configuration is as follows:
Server A - Project Server 2010 + SQL Server 2008 R2 SP1
Server B - separate dedicated SQL Reporting Server 2008 R2 SP1 (previously was just 2008, but the upgrade was done by the customer)
I have created a number of reports in Report Builder 3.0 using data from ProjectServer_Reporting database. I add the .rdl files to a SharePoint library, then add SQL Server Reporting web part and specify the desired report in it. If I choose sql authentication in the report then the report in the web part works correctly but always before viewing it prompts for the user credentials which is not very convenient for the customer. If I switch the authentication type to Windows then the web part shows the error (for sure the user is added to the db_datareader role in SQL Management Studio):
An error has occurred during report processing (rsProcessingAborted).
Cannot create a connection to data source 'PS2010DataSource' (rsErrorOpeningConnection).
PS2010dataSource - the name of the DataSource created in the Report Builder. In the Report Builder all the reports work fine as well.
Any help will be highly appreciated! Thank you beforehand!