Hi,

We we're using Add2Exchange before on our premise Exchange Servers but recently switched to Office 365.
So now we are using Add2Outlook, but we are getting this error frequently.

Synchronization with your <ActiveSync device> failed for 1 items.

We are getting this on all replication relationships (contacts)
When we delete the item from our contacts at the next sync, the items is copied again and a sync later we are getting this error back...
Recreating the Contact in the Public folder is not helping. We've tried it, but that didn't help either.

Does anybody got a clue what could be wrong?