A few months back, we announced the general availability of the new Exchange admin center (EAC). The new EAC offers a faster, more secure, and more intelligent modern admin experience than the classi...
Updated Sep 13, 2021
Version 2.0
Blog Post
If you've got an Exchange 2019 / Exchange Online hybrid, right now in the Exchange Admin Center there are navigation buttons for Enterprise and Office 365. The Office 365 button takes you to the classic online EAC at https://outlook.office365.com/ecp/hybrid.aspx. If you click for the new online EAC there, you leave and lose the on-premises EAC. Furthermore the switching between Enterprise and Office 365 only works properly in IE, and the new online EAC doesn't support IE. If you're in a hybrid and you want to use the EAC to migrate a mailbox online it requires you to click that Office 365 button (which goes to the old online EAC) to log in to 365 to proceed. Is 2019's EAC going to get redesigned or is it just going to be forgotten and abandoned?