What can be the reason for outlook to duplicate the contacts? I have one contacts folder and whenever I scan a visit card it creates another copy of it as if I scan it twice.
This shows only when searching the address book while in the contact itself it is showing only one contact
This is driving me crazy:mad:

Sounds like you don't have duplicates, but only the search displays them twice. It might help set the contacts to a different folder and back again to reset things. Installing the latest patches is always a good idea, too.

If you really have duplicates you can use this tool to remove your Outlook duplicates (http://www.easy2sync.com/en/produkte/1-Click-Duplicate-Delete-Outlook.php).