When you installing SharePoint 2010 Beta 2 and run the Config Wizard, you will get the following error:

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)

The following hotfix solves this problem 🙂

Title  KB976462
Release Date  11/18/2009
Size  10.91 MB
Version  Hotfix
Category  Build
Milestone  
Description  FIX FOR: WCF: Sharepoint Shared Services Roll-up

http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=23806

After installing the hotfix, restart the server, then go to SharePoint Central Administration -> Services in Server Page (http://URL/_admin/Server.aspx) and start the User Profile Synchronization Service.

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