Unable to start debugging on the web server

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March 26, 2007

Unable to start debugging on the web server. Debugging failed because integrated Windows authentication is not enabled. Please see Help for assistance.
This occurs when you are running your project on a local IIS Server and you are trying to debug your project on Visual Web Developer 2005 Express. Integrated Windows Authentication needs to be enabled.
  1. Open IIS (Internet Information Services)
  2. Right-click the web site and click Properties
  3. Choose the Directory Security tab and click Edit on Anonymous access and
    authentication control

    Anonymous access and authentication control

  4. Uncheck Anonymous access and check Integrated Windows authentication
    Integrated Windows authentication