Version 12.0.0.0 corresponds to . This is a specific release that is tied to SQL Server 2016 and Visual Studio 2015 era tooling. Many organizations still rely on this version for several reasons:
: This is a critical dependency for the Report Viewer 2015 Runtime. It must be installed before the Report Viewer package. Installation Tips microsoft report viewer version 12.0.0.0 download
If you are a developer integrating this into a project, use these packages: Microsoft.ReportViewer.Runtime.Common Microsoft.ReportViewer.WebForms.v12 Microsoft.ReportViewer.WinForms.v12 2. Critical Prerequisites The runtime will often fail to install or run without the SQL Server System CLR Types Microsoft Support You must install the Microsoft System CLR Types for SQL Server 2014 .NET Framework 3.5 SP1 is enabled on the system. ⚠️ Lifecycle & Support Notice Version 12
corresponds to Report Viewer 2015 (runtime version 12.0). It supports: It must be installed before the Report Viewer package