Souci Erreur HTTP 500.19 - Internal Server Error Site Web ASP

J'ai envie de rajouter une question toute bête pour les connaisseurs, comment configurer le web.config dans une application asp?
PS : j'ai honte, j'ai fais ma formation sur visual studio avec c#, asp etc.. mais je ne sais plus rien faire maintenant ayant programmé les dernières années en php...

J'ai oublié, voici mon web.config :
merci pour votre aide, je suis dans les choux...

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
    <handlers>
      <clear />
      <add name="Plesk_Handler_048963429" path="*.asp" verb="GET,HEAD,POST,TRACE" modules="IsapiModule" scriptProcessor="c:\windows\system32\inetsrv\asp.dll" resourceType="Either" />
      <add name="Plesk_Handler_048963692" path="*.cer" verb="GET,HEAD,POST,TRACE" modules="IsapiModule" scriptProcessor="c:\windows\system32\inetsrv\asp.dll" resourceType="Either" />
      <add name="Plesk_Handler_048963693" path="*.asa" verb="GET,HEAD,POST,TRACE" modules="IsapiModule" scriptProcessor="c:\windows\system32\inetsrv\asp.dll" resourceType="Either" />
      <add name="Plesk_Handler_048963694" path="*.cdx" verb="GET,HEAD,POST,TRACE" modules="IsapiModule" scriptProcessor="c:\windows\system32\inetsrv\asp.dll" resourceType="Either" />
      <add name="Plesk_Handler_048963695" path="*.shtm" verb="GET,POST" modules="ServerSideIncludeModule" resourceType="Either" />
      <add name="Plesk_Handler_048963696" path="*.shtml" verb="GET,POST" modules="ServerSideIncludeModule" resourceType="Either" />
      <add name="Plesk_Handler_048963697" path="*.stm" verb="GET,POST" modules="ServerSideIncludeModule" resourceType="Either" />
      <add name="Plesk_Handler_048963698" path="*.php" verb="*" modules="CgiModule" scriptProcessor="d:\plesk\additional\php\php.exe" resourceType="Either" />
      <add name="Plesk_Handler_048963699" path="*.php3" verb="*" modules="CgiModule" scriptProcessor="d:\plesk\additional\php\php.exe" resourceType="Either" />
      <add name="Plesk_Handler_048963700" path="*.phtml" verb="*" modules="CgiModule" scriptProcessor="d:\plesk\additional\php\php.exe" resourceType="Either" />
      <add name="Plesk_Handler_048963701" path="*.cgi" verb="GET,HEAD,POST" modules="CgiModule" scriptProcessor="d:\plesk\additional\perl\bin\perl.exe &quot;%s&quot; %s" resourceType="Either" />
      <add name="Plesk_Handler_048963702" path="*.pl" verb="GET,HEAD,POST" modules="CgiModule" scriptProcessor="d:\plesk\additional\perl\bin\perl.exe &quot;%s&quot; %s" resourceType="Either" />
      <add name="Plesk_Handler_048963703" path="*.plx" verb="GET,HEAD,POST" modules="IsapiModule" scriptProcessor="d:\plesk\additional\perl\bin\perlis.dll" resourceType="Either" />
      <add name="Plesk_Handler_048963707" path="*.dll" verb="*" modules="IsapiModule" resourceType="File" requireAccess="Execute" allowPathInfo="true" />
      <add name="Plesk_Handler_048963708" path="*.exe" verb="*" modules="CgiModule" resourceType="File" requireAccess="Execute" allowPathInfo="true" />
      <add name="StaticFile" path="*" verb="*" modules="StaticFileModule,DefaultDocumentModule,DirectoryListingModule" resourceType="Either" />
    </handlers>
    <httpErrors errorMode="Detailed" />
  </system.webServer>
</configuration>