On production machine: AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts.

I was helping my colleagues to debug one weird bug on ASP.NET 4.0 website. Everything worked well on developer’s machine, but after publishing to IIS 7.5 Windows 2008 R2 Webserver, we always got site partially working. Everything worked, except AJAX Control Toolkit controls. There were no any signs of errors. Ajax controls just were not […]

ASP.NET 4.0 – An error occurred during local report processing

After fixing missing ReportViewer redistributable, I got the following error: Report Viewer Configuration Error The Report Viewer Web Control HTTP Handler has not been registered in the application’s web.config file. Add to the system.web/httpHandlers section of the web.config file, or add to the system.webServer/handlers section for Internet Information Services 7 or later. Loading… An error […]

IIS 7.5 – Parser Error Message: Could not load file or assembly Microsoft.ReportViewer.WebForms

When deploying a new application to IIS 7.5 on Windows Server 2008 R2 (test server). I got the following error: Server Error in ‘/’ Application. ——————————————————————————– Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration […]