HTTP-Fehler 500.19 - Internal Server Error

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IIS

MySQL

HTTP

Drupal

Hello you out there, i have a question, i wanted to use my live drupal site as local test site. So i intalled iis7.5, php5 and mysql on my local computer.
The problem is if i want to open the site in my browser, i get a error message:

HTTP-Fehler 500.19 - Internal Server Error

"Auf die angeforderte Seite kann nicht zugegriffen werden, da die zugehörigen Konfigurationsdaten für die Seite ungültig sind."

In english something like:
"Cant open the site, cause the configuration data for that site is invalid"

There is also something writte:

Configurationsource:

-1;
0;

Does anyone out of you know what to do?

Webconfig:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
  <!-- Don't show directory listings for URLs which map to a directory. -->
    <directoryBrowse enabled="false" />

    <!--
       Caching configuration was not delegated by default. Some hosters may not delegate the caching
       configuration to site owners by default and that may cause errors when users install. Uncomment
       this if you want to and are allowed to enable caching
     -->
    <!--
    <caching>
      <profiles>
        <add extension=".php" policy="DisableCache" kernelCachePolicy="DisableCache" />
        <add extension=".html" policy="CacheForTimePeriod" kernelCachePolicy="CacheForTimePeriod" duration="14:00:00" />
      </profiles>
    </caching>
     -->

    <rewrite>
      <rules>
        <!-- rule name="postinst-redirect" stopProcessing="true">
          <match url="." />
          <action type="Rewrite" url="postinst.php"/>
        </rule 0-->

        <rule name="Protect files and directories from prying eyes" stopProcessing="true">
          <match url=".(engine|inc|info|install|module|profile|test|po|sh|.sql|postinst.1|theme|tpl(.php)?|xtmpl|svn-base)$|^(code-style.pl|Entries.|Repository|Root|Tag|Template|all-wcprops|entries|format)$" />
          <action type="CustomResponse" statusCode="403" subStatusCode="0" statusReason="Forbidden" statusDescription="Access is forbidden." />
        </rule>
        <rule name="Force simple error message for requests for non-existent favicon.ico" stopProcessing="true">
          <match url="favicon.ico" />
          <action type="CustomResponse" statusCode="404" subStatusCode="1" statusReason="File Not Found" statusDescription="The requested file favicon.ico was not found" />
        </rule>
                <!-- To redirect all users to access the site WITH the 'www.' prefix,
                http://example.com/... will be redirected to http://www.example.com/...)
                adapt and uncomment the following:   -->
                <!--
        <rule name="Redirect to add www" stopProcessing="true">
          <match url="^(.)$" ignoreCase="false" />
          <conditions>
            <add input="{HTTP_HOST}" pattern="^example.com$" />
          </conditions>
          <action type="Redirect" redirectType="Permanent" url="http://www.example.com/{R:1}" />
        </rule>
                -->
                <!-- To redirect all users to access the site WITHOUT the 'www.' prefix,
                http://www.example.com/... will be redirected to http://example.com/...)
                adapt and uncomment the following:   -->
                <!--
        <rule name="Redirect to remove www" stopProcessing="true">
          <match url="^(.)$" ignoreCase="false" />
          <conditions>
            <add input="{HTTP_HOST}" pattern="^www.example.com$" />
          </conditions>
          <action type="Redirect" redirectType="Permanent" url="http://example.com/{R:1}" />
        </rule>
                -->
        <!-- Rewrite URLs of the form 'x' to the form 'index.php?q=x'. -->
        <rule name="Short URLS" stopProcessing="true">
          <match url="^(.*)$" ignoreCase="false" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
            <add input="{URL}" pattern="^/favicon.ico$" ignoreCase="false" negate="true" />
          </conditions>
          <action type="Rewrite" url="index.php?q={R:1}" appendQueryString="true" />
        </rule>
      </rules>
    </rewrite>

    <!-- httpErrors>
      <remove statusCode="404" subStatusCode="-1" />
      <error statusCode="404" prefixLanguageFilePath="" path="/index.php" responseMode="ExecuteURL" />
    </httpErrors -->

    <defaultDocument>
     <!-- Set the default document -->
      <files>
        <remove value="index.php" />
        <add value="index.php" />
      </files>
    </defaultDocument>
  </system.webServer>
</configuration>

Thanks in advance