I've erased over 13000 contact from outlook.
After this hours work I was happy.....
But there is an other problem now. The phone application have also a ot of contact duplicate probalbly the same as in Outlook. In this app all this contacts are marqued as Skype contacts.
I can only erase one by one... need 4 click for one... horrible.
The Microsoft support wasn't able to find a solution....
He wanted to reinstall the mobile connect app... I do that and after a short time I had a lot of double entries I stop the software and erase over 200 duplicated entries in Outlook
I'm frustrated.