Fix msExchHideFromAddressLists Not Syncing
tl;dr – Close your Synchronization Rules Editor and just populate the mailNickname attribute in AD. There is a growing number of business networks that have never had Exchange installed on-premises. That’s awesome. You absolutely do not want to waste your time protecting your Exchange environment against whatever scripted threats can be thrown at you 24/7, especially when you can just pay Microsoft to do it for you. However, what that means is you end up missing information in a few places that Azure AD Connect is looking....