HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid.
500.19 may be returned when browsing to the mobile handheld webpage (localhost/accthandheld)
Before installing Acctivate mobile, you are required to install two components to setup the Mobile webpage. First is IIS web services then ASP.NET. If the server OS is “Server 2012” or newer it’s possible Internet Information services (IIS) was installed but the underlining component, ASP.NET, was missed. Ensure that ASP.NET was installed, then refresh the mobile site (browsing to localhost/accthandheld on the server).
The error might be similar to the one below
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.
Detailed Error Information:
Module IIS Web Core
Notification BeginRequest
Handler Not yet determined
Error Code 0x800700b7
Config Error There is a duplicate 'system.web.extensions/scripting/scriptResourceHandler' section defined
Config File \\?\C:\inetpub\wwwroot\AcctHandheld\web.config
Requested URL http://localhost:80/accthandheld
Physical Path C:\inetpub\wwwroot\AcctHandheld
Logon Method Not yet determined
Logon User Not yet determined
Config Source:
5: <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
6: <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"></section>
7: <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">