If you get the error message: "The URL-encoded form data is not valid" when you select any search- or store dialog in the web client please

Do the following steps:

  • Open the file C:\inetpub\wwwroot\DWWebClient\DWWebClient.settings
  • Add the following line:
    <add key="aspnet:MaxHttpCollectionKeys" value="1000"
  • Choose a value of 1000 or higher
  • Save the settings
  • Restart the application pool which is assigned to the DocuWare Web Client

For more information see