An application attempts to listen for local loopback requests by calling HttpAddUrl for http://localhost[:port]. If the application does not have administrator privileges the call will fail with the following:

Access Denied

This problem occurs on Windows Vista if User Account Control (UAC) is enabled and the application is running under the Limited User Account.

This problem occurs when the local computer is running one of the following Microsoft Windows operating system:

• Windows Vista
• Windows Server 2003
• Windows XP

• Admin Pack replacement to be available for Vista after SP1 RTM
  You’ll be able to manage Server 2008 from a Vista client next spring when SP1 is out for Vista.
  (tags: Server Administer )

You’ll be able to manage Server 2008 from a Vista client next spring when SP1 is out for Vista. Keep reading →