I just installed VS 2012 RTM which also installs the in-place upgrade of .Net framework v 4.0 to v 4.5. All of my DNN module development sites (DNN v 5.6.7, v 6.1.5 and v 6.2.2) running on IIS 7.5 that are associated with ASP.Net 4.0 application pools (integrated pipeline) now throw the following unhandled server error:
Security Exception
Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
Stack Trace:
[SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
Telerik.Web.UI.RadUploadHttpModule.CaptureWorkerRequest(Object sender, EventArgs e) +0
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +165
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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929
If I change the Trust Level set in web.config from "Medium" to "Full" the error does not occur and each site appears to fuction as it did prior to the .Net 4.5 upgrade.
I've done extensive Google searches and checked the Telerik forums but have found no other mention of this requirement of elevating trust level for the Telerik RadUploadHttpModule following upgrade to ASP.Net 4.5.
Has anyone else run across this issue?