If you tried installing SharePoint 2010 Beta 2 on Windows 7 (or Windows Server 2008 R2) shortly after its release; you may have ran into the following error:
Failed to create sample data.
An exception of type Microsoft.Office.Server.UserProfiles.UserProfileException was thrown. Additional exception information: Unrecognized attribute ‘allowInsecureTransport’. Note that attribute names are case-sensitive. (C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\WebClients\Profile\client.config line 56)
Microsoft.Office.Server.UserProfiles.UserProfileException: Unrecognized attribute ‘allowInsecureTransport’.
This error is caused by a known issue with Token Authentication and WCF. A fix has been released and is now available at http://go.microsoft.com/fwlink/?LinkID=166231.
If you didn’t uninstall after receiving the error, simply install the hotfix, and re-run the SharePoint 2010 Products Configuration Wizard.