| title | Cannot Load File or Assembly |
|---|---|
| page_title | Cannot Load File or Assembly Error Occurs |
| description | Learn how to handle the error 'Cannot Load File or Assembly' which occurs when the system cannot load the required Telerik Reporting assemblies. |
| slug | cannot-load-file-assembly-error |
| tags | telerik, reporting, run, time, cannot, load, file, assembly, error, occurs |
| published | true |
| type | troubleshooting |
| res_type | kb |
| Product | Progress® Telerik® Reporting |
| Version | Q2 2012 and later |
| Report Viewers | WinForms, WPF, ASP.NET |
When deploying a project with Telerik Reporting on a server, I get the Could not load file or assembly 'Telerik.ReportViewer.WebForms, Version=x.x.x.x, Culture=neutral, PublicKeyToken=a9d7983dfcc261be (or one of its dependencies) error.
The system cannot find the specified file. During the installation of Telerik Reporting on a developer machine, the Telerik Reporting assemblies are added to GAC. When deploying a project by using the Visual Studio built-in functionality, the assemblies from the GAC are not automatically copied.
You need to make sure that the assemblies physically exist in the bin folder of your application. For the full details, refer to the Deploying Web Applications article.