After We migrated the Exchange from 2010 to 2013 any shared mailbox has been migrated is showing the inbox and all the subfolders from the user's mailbox in Outlook, instead of the shared mailbox content.
note: if we create new shared mailbox it works fine without any issue.
We have tried to removed full access permissions and re-added full access permissions, disabling AutoMapping and then added the shared mailbox manually in Outlook and that works fine but it is not a solution for us as we have 400+ shared mailbox and we cannot do it for every user have access on each shared mailbox.
any ideas.
Ayman Saleh