Exchange 2010 Version: 14.02.0247.005
2008 R2 Enterprise
Outlook 2007 persistently asks for password on Outlook Anywhere and even if the details are enter it's not accepted as been correct but Outlook 2010 works ok.
I've tried changing the following key HKEY_CURRENT_USER\Software
\RPC to 1 as per http://support.microsoft.com/kb/956531
but without success.