Available at the Official Download Page .
To resolve this and enable reporting, you must download and install the along with its mandatory prerequisite, Microsoft System CLR Types for SQL Server 2012 . Core Requirements for WSUS 2019 Reporting Available at the Official Download Page
While Server 2019 is a modern operating system, the WSUS console reporting engine still relies on the 2012 version of the Report Viewer runtime. You need two primary components: Available at the Official Download Page
The actual control that displays the WSUS reports. Where to Download Available at the Official Download Page