HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid

Question

I reinstalled Windows and am now configuring everything to get my machine up and running again. I'm receiving this error when navigating to www.mysite.com:

I looked at various forums and have given folder c:\dropbpx\inetpub\mysite full permissions for IIS_IUSRS, IUSR, Everyone AND NETWORK SERVICE, but I keep getting the error. I've also given full permissions for IIS_IUSRS on applicationhost.config in %WINDIR%\System32\inetsrv\config\

Also when I via IIS go to my website and click on 'authentication' I get the error: There was an error while performing this operation. Details: Filename: \?\C:\Dropbox\inetpub\mysite\web.config Error:

Application pool of my website is set to ASP.NET v4.0

See here my web.config

<?xml version="1.0" encoding="UTF-8"?>

<!--
For more information on how to configure your ASP.NET application, please visit  http://go.microsoft.com/fwlink/?LinkId=169433
-->

<configuration>


<connectionStrings>
<add name="conn1" connectionString="data source=(local);Initial Catalog=tt;User Id=sa;Password=dfsdf3454sdg;" providerName="System.Data.SqlClient" />
</connectionStrings>
<system.web.extensions>
<scripting>
  <webServices>
    <jsonSerialization maxJsonLength="5000000" />
  </webServices>
</scripting>
</system.web.extensions>

<system.web>
<httpRuntime maxRequestLength="5120000" requestValidationMode="2.0" />  
<compilation debug="true" strict="false" explicit="true" targetFramework="4.0" />

<sessionState mode="InProc" timeout="60" />
<authentication mode="Forms">
  <forms name=".MyCookie" slidingExpiration="true" timeout="60" cookieless="AutoDetect" loginUrl="/login/" protection="All" defaultUrl="/">
    <credentials passwordFormat="SHA1" />
  </forms>
</authentication>
<roleManager domain="192.168.0.103" enabled="true" cacheRolesInCookie="true" cookieName=".ASPXROLES" cookieTimeout="60" cookiePath="/" cookieRequireSSL="false" cookieSlidingExpiration="true" cookieProtection="All" defaultProvider="AccessRoleProvider" createPersistentCookie="false" maxCachedResults="25">
  <providers>
    <clear />
    <add name="AccessRoleProvider" connectionStringName="conn1" applicationName="/wedding" type="Samples.AccessProviders.AccessRoleProvider" />
  </providers>
</roleManager>
<membership defaultProvider="AccessMembershipProvider" userIsOnlineTimeWindow="30">
  <providers>
    <clear />
    <add name="AccessMembershipProvider" type="Samples.AccessProviders.AccessMembershipProvider" connectionStringName="conn1" requiresQuestionAndAnswer="false" applicationName="/wedding" minRequiredPasswordLength="6" enablePasswordRetrieval="false" enablePasswordReset="true" requiresUniqueEmail="true" minRequiredNonalphanumericCharacters="0" passwordFormat="Hashed" />
  </providers>
</membership>
</system.web>
<system.webServer>
<!-- SEO-friendly URLS for IIS 7.0 (if you're using IIS 6.0 see above) -->
<validation validateIntegratedModeConfiguration="false" />
<modules runAllManagedModulesForAllRequests="true">
  <add type="aspnetforum.ForumSEOHttpModule, aspnetforum" name="ForumSEOHttpModule" />
</modules>
<handlers>
  <add name="ScriptCombiner" verb="POST,GET" path="ScriptCombiner.axd" preCondition="integratedMode" type="ScriptCombiner, App_Code" />
</handlers>
<security>
  <requestFiltering allowDoubleEscaping="true" />
</security> 
<defaultDocument>
  <files>
    <clear />
    <add value="default.aspx" />
    <add value="Default.htm" />
    <add value="Default.asp" />
    <add value="index.htm" />
    <add value="index.html" />
    <add value="iisstart.htm" />
  </files>
</defaultDocument>
    <staticContent>
        <mimeMap fileExtension=".kml" mimeType="application/vnd.google-earth.kml+xml" />
    </staticContent>
</system.webServer>
<system.serviceModel>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
<bindings>
  <basicHttpBinding>
    <binding name="VirtueleKassaWebServiceSoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
      <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
      <security mode="Transport">
        <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />
      </security>
    </binding>
    <binding name="VirtueleKassaWebServiceSoap1" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
      <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
      <security mode="None">
        <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />
      </security>
    </binding>
  </basicHttpBinding>
</bindings>
<client>
  <endpoint address="https://secure.virtuelekassa.nl/webservice/VirtueleKassaWebservice.asmx" binding="basicHttpBinding" bindingConfiguration="VirtueleKassaWebServiceSoap" contract="virtuelekassa.VirtueleKassaWebServiceSoap" name="VirtueleKassaWebServiceSoap" />
</client>
  <services>
      <service name="RestService.weddingservice">
          <endpoint behaviorConfiguration="webHttp" binding="webHttpBinding" contract="RestService.Iweddingservice" />
      </service>
  </services>

<behaviors>
  <serviceBehaviors>
    <behavior name="">
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
  <endpointBehaviors>
    <behavior name="webHttp">
      <webHttp />
    </behavior>
  </endpointBehaviors>
</behaviors>
</system.serviceModel>
</configuration>

What else can it be?

Answer 1

Thats because you have not registered the ASP in IIS.

Go to C:\Windows\Microsoft.NET\Framework\v4.0.30319 and execute aspnet_regiis.exe

Go to IIS, expand server, click Application Pools. If it doesn't contain "ASP.NET v4.0" and "ASP.NET v4.0 Classic" files, ASP is not registered in IIS.

Take command prompt, go to C:\Windows\Microsoft.NET\Framework\v4.0.30319 location. Type aspnet_regiis -i

Now it will show that ASP is getting registered. After it is completed, you can see "ASP.NET v4.0" and "ASP.NET v4.0 Classic" files in IIS under Application Pool

Answer 2

Check for the following IIS features are On.(Application Development Features)

If features under Application Development Features are not on turn it on from Windows Features on off from control panel.

Answer 3

Never leave out parts of the web.config you don't deem relevant: it was the urlrewrite section I have in the web.config! I installed it (http://www.microsoft.com/web/gallery/install.aspx?appid=urlrewrite2) and now it works.