-------------------------
<system.webServer>
<modules>
<remove name="ScriptModule" />
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" preCondition="managedHandler" />
<add name="Compression" type="DotNetNuke.HttpModules.Compression.CompressionModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="RequestFilter" type="DotNetNuke.HttpModules.RequestFilter.RequestFilterModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="UrlRewrite" type="DotNetNuke.HttpModules.UrlRewriteModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="Exception" type="DotNetNuke.HttpModules.Exceptions.ExceptionModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="UsersOnline" type="DotNetNuke.HttpModules.UsersOnline.UsersOnlineModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="DNNMembership" type="DotNetNuke.HttpModules.Membership.MembershipModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="Personalization" type="DotNetNuke.HttpModules.Personalization.PersonalizationModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="Analytics" type="DotNetNuke.HttpModules.Analytics.AnalyticsModule, DotNetNuke.HttpModules" preCondition="managedHandler" />
<add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule, Telerik.Web.UI" preCondition="managedHandler" />
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated" />
<remove name="ScriptHandlerFactory" />
<remove name="ScriptHandlerFactoryAppServices" />
<remove name="ScriptResource" />
<add name="LogoffHandler*" path="Logoff.aspx" verb="*" type="DotNetNuke.Services.Authentication.LogOffHandler, DotNetNuke" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="RSSJandler" path="RSS.aspx" verb="*" type="DotNetNuke.Services.Syndication.RssHandler, DotNetNuke" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="LinkClickHandler" path="LinkClick.aspx" verb="*" type="DotNetNuke.Services.FileSystem.FileServerHandler, DotNetNuke" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="CaptchaHandler" path="*.captcha.aspx" verb="*" type="DotNetNuke.UI.WebControls.CaptchaHandler, DotNetNuke" preCondition="integratedMode,runtimeVersionv2.0" />
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="ScriptResource" verb="GET,HEAD" path="ScriptResource.axd" preCondition="integratedMode" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="Telerik.Web.UI.WebResource" verb="*" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" />
<add name="Telerik.Web.UI.ChartHttpHandler" verb="*" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Culture=neutral, PublicKeyToken=121fae78165ba3d4" />
<add name="AJAX_SwirlChat" path="DesktopModules/SWIRLChat/*.ashx" verb="POST,GET" type="AjaxPro.AjaxHandlerFactory, AjaxPro.2" />
</handlers>
<validation validateIntegratedModeConfiguration="false" />
</system.webServer>
<system.web>
<!-- Ensure validationkey is not set to AutoGenerate,IsolateApps so it correctly supports webfarms -->
<machineKey validationKey="7119296DFC5D0F81A192783CAD86387036F80D58" decryptionKey="9759F776F457DA803E10D2A147B8F29AC502F5AB8118B69E" decryption="3DES" validation="SHA1" />
<!-- HttpModules for Common Functionality -->
<httpModules>
<!-- add name="Authentication" type="DotNetNuke.HttpModules.AuthenticationModule, DotNetNuke.HttpModules.Authentication" / -->
<add name="Compression" type="DotNetNuke.HttpModules.Compression.CompressionModule, DotNetNuke.HttpModules" />
<add name="RequestFilter" type="DotNetNuke.HttpModules.RequestFilter.RequestFilterModule, DotNetNuke.HttpModules" />
<add name="UrlRewrite" type="DotNetNuke.HttpModules.UrlRewriteModule, DotNetNuke.HttpModules" />
<add name="Exception" type="DotNetNuke.HttpModules.Exceptions.ExceptionModule, DotNetNuke.HttpModules" />
<add name="UsersOnline" type="DotNetNuke.HttpModules.UsersOnline.UsersOnlineModule, DotNetNuke.HttpModules" />
<add name="DNNMembership" type="DotNetNuke.HttpModules.Membership.MembershipModule, DotNetNuke.HttpModules" />
<add name="Personalization" type="DotNetNuke.HttpModules.Personalization.PersonalizationModule, DotNetNuke.HttpModules" />
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="Analytics" type="DotNetNuke.HttpModules.Analytics.AnalyticsModule, DotNetNuke.HttpModules" />
<add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule, Telerik.Web.UI" />
</httpModules>
<httpHandlers>
<!-- This is for CAPTCHA support -->
<add verb="*" path="*.captcha.aspx" type="DotNetNuke.UI.WebControls.CaptchaHandler, DotNetNuke" />
<!-- This is for Serving files, secure, insecure, from database -->
<add verb="*" path="LinkClick.aspx" type="DotNetNuke.Services.FileSystem.FileServerHandler, DotNetNuke" />
<!-- This adds syndication support -->
<add verb="*" path="RSS.aspx" type="DotNetNuke.Services.Syndication.RssHandler, DotNetNuke" />
<!-- This adds legacy support for the Logoff page -->
<add verb="*" path="Logoff.aspx" type="DotNetNuke.Services.Authentication.LogOffHandler, DotNetNuke" />
<!-- ASP.NET AJAX support -->
<remove verb="*" path="*.asmx" />
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" />
<add verb="POST,GET" path="DesktopModules/SWIRLChat/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro.2" />
<add verb="*" path="Telerik.Web.UI.WebResource.axd" validate="false" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" />
<add verb="*" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Culture=neutral, PublicKeyToken=121fae78165ba3d4" validate="true" />
<add verb="*" path="LanapCaptcha.aspx" type="Lanap.BotDetect.CaptchaHandler, Lanap.BotDetect" />
</httpHandlers>
....
.
I installed the 2.1.5 version.
I dont have installed the Active Directory module, because an error while installation (about Permissions)