KDC event ID 27 on Windows 2003 DC

You can also perform the following step to solve the problem on windows 2003 DC by adding the registry DWORD “KdcUseREquestedEtypesForTickets” under registry seeting

Hkey_local_Machine\System\CurrentControlSet\Services\KDC

Value Name : KdcUseREquestedEtypesForTickets
Value Type:  DWORD 
Value Data:  1