I have an AspNet MVC project in Visual Studio 2017 that was previously developed in Visual Studio 2015. This project contains many rdlc files that were working
I had the same problem and I solved it uninstalling the nuget packages Microsoft.ReportViewer.Runtime.Common and Microsoft.ReportViewer.Runtime.WebForms and installing the package Microsoft.ReportingServices.ReportViewerControl.WebForms.140.340.80. I would like to highlight that I had to add a reference to System.Windows.Forms because there is a dependency in the class ReportDataSource
that I use to render my reports