I am running a DotNetNuke web site on my Winhost site. This website uses a "Store" application that has a gateway to PayPal. When I process an order through PayPal everything works well on that side, but upon return to the webiste it get the following error message and the process stops. System.Security.SecurityException: Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessPermission.Demand() at System.Net.HttpWebRequest..ctor(Uri uri, ServicePoint servicePoint) at System.Net.HttpRequestCreator.Create(Uri Uri) at System.Net.WebRequest.Create(Uri requestUri, Boolean useUriBase) at System.Net.WebRequest.Create(String requestUriString) at NEvoWeb.Modules.NB_Store.Gateway.GatewayPayPal.VerifyPayment(PayPalIPNParameters ipn, String verifyURL) at NEvoWeb.Modules.NB_Store.Gateway.GatewayPayPal.AutoResponse(Int32 PortalID, HttpRequest Request) The action that failed was: Demand The type of the first permission that failed was: System.Net.WebPermission The Zone of the assembly that failed was: MyComputer Research says to use "Trust Level = Full" in the web.config file. I've done that and still get the error. Any ideas on how to resolve this issue? Thanks