In Outlook 2013 under "People" when I search for virtually any name it will come up with a duplicate. When I open the first listing it says "In Folder Contacts" which is the only contact folder I have. When I open the second listing is says "In Folder Duplicate Contacts". I don't see a folder named "Duplicate Contacts".
During my research I found the steps to disable the search from looking in nickname cache:
This hasn't fixed the problem.
I've also rolled back to Outlook 2010 and the problem continues.
We are running an exchange server. I have tried disabling add-ons. I have tried deleting the data file and re-syncing.
Any suggestions would be appreciated.