I had a new hosting server setup using WebsitePanel on Win Server 2008 R2 with IIS 7.5. When I try to migrate a site by copying the DNN files to the new location I get an error related to having duplicate sections in web.config.

Error: Config section 'system.webServer/validation' already defined. Sections must only appear once per config file.

I see that this section is used twice, in two separate System.webServer nodes.



Both System.webServer nodes say...



But they have different elements within them.

Just curious about what I need to do to resolve this and am I likely to encounter other issues in moving from IIS 6 to IIS 7.5?

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Forerunner Communications, LLC
DotNetNuke Integration Specialists

Cliff, I did this about a year ago, there were a couple issues as I recall ...
As we can't see "both say" - that is blank in your post ...
I think you also have to set your app pool to integrated and load user profile to true
I'm not sure who had article on that, perhaps Google something like DNN app pool IIS 7.5

As far as duplicate section, why not merge them and figure out what is the correct element? Just make a backup copy first!

Thanks John. I guess I will retype my reply since DNN crashed when I submitted. I typically copy my posts to the clipboard before submitting, but got in a hurry.

I went down the path of installing DNN 7 from Web App Gallery and got a site running on the domain. Then I copied in my DNN 6 files, excluding web.config, and restored my db. I started making some progress. Had to update Telerik settings in web.config for DNN 6.

I am in IIS Integrated Mode and just set the Load User Profile to True for the .NET 4 app pool. I am still using the NETWORK SERVICE account with Full Permissions. Is that OK?

I have seen some posts about permissions on the db but I am not sure what they are all about.

I am currently getting this set of errors.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
DotNetNuke.Common.Globals.get_Status() +112
DotNetNuke.Services.Log.EventLog.LogController.AddLog(LogInfo logInfo) +38
DotNetNuke.Services.Log.EventLog.ExceptionLogController.AddLog(Exception objException, ExceptionLogType LogType) +3205
DotNetNuke.ComponentModel.ProviderInstaller.InstallProvider(IContainer container, Provider provider) +182
DotNetNuke.ComponentModel.ProviderInstaller.InstallComponents(IContainer container) +130
DotNetNuke.ComponentModel.ComponentFactory.InstallComponents(IComponentInstaller[] installers) +109
DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication.Application_Start(Object Sender, EventArgs E) +335

[HttpException (0x80004005): Object reference not set to an instance of an object.]
System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +4057733
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +191
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +352
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +407
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +375

[HttpException (0x80004005): Object reference not set to an instance of an object.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +11702064
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4870277

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

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Forerunner Communications, LLC
DotNetNuke Integration Specialists