Today, I have upgraded my Exchange 2013 deployment by installing the latest CU – CU 6 available for download here http://www.microsoft.com/en-us/download/details.aspx?id=44022
Then I wanted to updated my hybrid configuration with Office 365, so I connect to my ECP and start the HCW to update the settings.
At the end of the HCW, I discovered that the wizard has been updated to simplify OAuth authentication configuration which was done manually previously – see http://technet.microsoft.com/en-us/library/dn594521(v=exchg.150).aspx
Everything went smoothly – as usual (and at least since the install of the update to solve the HCW failing issue) until I went to the following windows at the end of the wizard, in place of the classic HCW configuration completed successfully message.
To continue and so complete the configuration, the HCW download a tool from http://go.microsoft.com/fwlink/?LinkID=320386