Wednesday, November 30, 2011

CRM 2011 - "HTTP 500 - Internal Server Error" using SOAP Endpoint in Silverlight Webresources

Requesting data over organization endpoint results in the following error.
HTTP 500 - Internal Server Error

The problem may be a missing provider-setting in the IIS configuration.

  • Open IIS Manager
  • Select "Microsoft Dynamics CRM" Site
  • Doubleclick "Authentication"
  • Right click "Windows Authentication"
  • Select "Providers"
  • Add "Negotiate"
  • IIS-Reset

 There should be two "Provider" entries.
  • Negotiate
  • NTLM

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