我在本地计算机上使用DotNetOpenAuth模板（示例）工作正常（作为localhost）但是当我将它发布到我的服务器时，我收到此错误：
Error Summary
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related
页面的配置数据无效。
详细错误信息
Module IIS Web Core
Notification Unknown
Handler Not yet determined
Error Code 0x800700b7
Config Error There is a duplicate 'uri' section defined
的Web.config：
<?xml version="1.0"?>
<!--
Note: As an alternative to hand editing this file you can use the
web admin tool to configure settings for your application. Use
the Website->Asp.Net Configuration option in Visual Studio.
A full list of settings and comments can be found in
machine.config.comments usually located in
\Windows\Microsoft.Net\Framework\v2.x\Config
-->
<configuration>
<configSections>
<section name="uri" type="System.Configuration.UriSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler" requirePermission="false"/>
<section name="dotNetOpenAuth" type="DotNetOpenAuth.Configuration.DotNetOpenAuthSection" requirePermission="false" allowLocation="true"/>
</configSections>
<!-- The uri section is necessary to turn on .NET 3.5 support for IDN (international domain names),
which is necessary for OpenID urls with unicode characters in the domain/host name.
It is also required to put the Uri class into RFC 3986 escaping mode, which OpenID and OAuth require. -->
<uri>
<idn enabled="All"/>
<iriParsing enabled="true"/>
</uri>
<system.net>
<defaultProxy enabled="true"/>
<settings>
<!-- This setting causes .NET to check certificate revocation lists (CRL)
before trusting HTTPS certificates. But this setting tends to not
be allowed in shared hosting environments. -->
<servicePointManager checkCertificateRevocationList="true"/>
</settings>
</system.net>
<!-- this is an optional configuration section where aspects of dotnetopenauth can be customized -->
<dotNetOpenAuth>
<messaging>
<untrustedWebRequest>
<whitelistHosts>
<!--<add name="localhost" />-->
</whitelistHosts>
</untrustedWebRequest>
</messaging>
<openid>
<relyingParty>
<behaviors>
<!-- The following OPTIONAL behavior allows RPs to use SREG only, but be compatible
with OPs that use Attribute Exchange (in various formats). -->
<add type="DotNetOpenAuth.OpenId.Behaviors.AXFetchAsSregTransform, DotNetOpenAuth"/>
</behaviors>
<store type="RelyingPartyLogic.RelyingPartyApplicationDbStore, RelyingPartyLogic"/>
</relyingParty>
</openid>
<oauth>
<serviceProvider>
<store type="RelyingPartyLogic.NonceDbStore, RelyingPartyLogic"/>
</serviceProvider>
</oauth>
<!-- Allow DotNetOpenAuth to publish usage statistics to library authors to improve the library. -->
<reporting enabled="true"/>
</dotNetOpenAuth>
<!-- log4net is a 3rd party (free) logger library that DotNetOpenAuth will use if present but does not require. -->
<log4net>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="100"/>
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<commandText value="INSERT INTO [Log] ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)"/>
<parameter>
<parameterName value="@log_date"/>
<dbType value="DateTime"/>
<layout type="log4net.Layout.RawTimeStampLayout"/>
</parameter>
<parameter>
<parameterName value="@thread"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%thread"/>
</layout>
</parameter>
<parameter>
<parameterName value="@log_level"/>
<dbType value="String"/>
<size value="50"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%level"/>
</layout>
</parameter>
<parameter>
<parameterName value="@logger"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%logger"/>
</layout>
</parameter>
<parameter>
<parameterName value="@message"/>
<dbType value="String"/>
<size value="4000"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%message"/>
</layout>
</parameter>
<parameter>
<parameterName value="@exception"/>
<dbType value="String"/>
<size value="2000"/>
<layout type="log4net.Layout.ExceptionLayout"/>
</parameter>
</appender>
<!-- Setup the root category, add the appenders and set the default level -->
<root>
<level value="WARN"/>
<appender-ref ref="AdoNetAppender"/>
</root>
<!-- Specify the level for some specific categories -->
<logger name="DotNetOpenAuth">
<level value="WARN"/>
</logger>
<logger name="DotNetOpenAuth.OpenId">
<level value="INFO"/>
</logger>
<logger name="DotNetOpenAuth.OAuth">
<level value="INFO"/>
</logger>
</log4net>
<appSettings/>
<connectionStrings>
<!-- Remember to keep this connection string in sync with the one (if any) that appears in the log4net section. -->
<add name="DatabaseEntities" connectionString="metadata=res://*/Model.csdl|res://*/Model.ssdl|res://*/Model.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Pubba_V05.mdf;Integrated Security=True;User Instance=True;MultipleActiveResultSets=True"" providerName="System.Data.EntityClient"/>
</connectionStrings>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
-->
<compilation debug="true" targetFramework="4.0">
<assemblies>
<remove assembly="DotNetOpenAuth.Contracts"/>
<add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<add assembly="System.Web.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/></assemblies>
</compilation>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="Forms">
<forms loginUrl="~/login.aspx" name="Pubba_V05"/>
</authentication>
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
-->
<customErrors mode="RemoteOnly"/>
<httpModules>
<add name="OAuthAuthenticationModule" type="RelyingPartyLogic.OAuthAuthenticationModule, RelyingPartyLogic"/>
<add name="Database" type="RelyingPartyLogic.Database, RelyingPartyLogic"/>
</httpModules>
<roleManager enabled="true" defaultProvider="Database">
<providers>
<add name="Database" type="RelyingPartyLogic.DataRoleProvider, RelyingPartyLogic"/>
</providers>
</roleManager>
<pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/></system.web>
<!--
The system.webServer section is required for running ASP.NET AJAX under Internet
Information Services 7.0. It is not necessary for previous version of IIS.
-->
<system.webServer>
<modules>
<add name="OAuthAuthenticationModule" type="RelyingPartyLogic.OAuthAuthenticationModule, RelyingPartyLogic"/>
<add name="Database" type="RelyingPartyLogic.Database, RelyingPartyLogic"/>
</modules>
</system.webServer>
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="DataApiBehavior">
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="true"/>
<serviceAuthorization serviceAuthorizationManagerType="OAuthAuthorizationManager, __code" principalPermissionMode="Custom"/>
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<!--<service behaviorConfiguration="DataApiBehavior" name="DataApi">
</service>-->
</services>
</system.serviceModel>
<location path="default.aspx">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
</configuration>
我怎么能解决这个问题？
答案 0 :(得分：16)
问题出现在这里：
<section name="uri" type="System.Configuration.UriSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
删除错误已解决的那一行。
升级到.NET 4.0后会出现此问题，这会将大量配置移至machine.config。