The scenario where HTML5-based report viewer is connected to Report Server should work out-of-the-box and is supported by our Item Template
Wizards. However, modern web applications need to reference many other assemblies (usually through NuGet packages) and it's easy to have them misconfigured.
On the Report Server side, there should be no additional configurations, as long as the Report Server is running and is able to preview reports.
On the client side, assemblies that will handle the request-response workflow and serialize and deserialize the web contents should be added to the project, like for example System.Net.Http
and their dependencies. We strongly recommend to configure the report viewer using the Item Template
wizard, because it will add the necessary NuGet packages to the project - see this article for reference: How To: Use HTML5 Report Viewer with Report Server
In order to provide further assistance, we'll need to inspect the configuration of the current project. I suggest to open a new support ticket and send us the project so we can investigate it on our side.
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