This issue is fixed in version 15.38 (170815) of the Insider Fast Build as of August, 16:Ī user with a mailbox on Exchange 2013 was granted FullAccess to a mailbox on Exchange 2016. First I couldn’t reproduce the issue, until I got another important detail:Īll these user are using Outlook for Mac and indeed I could reproduce the behavior. Users complained they cannot access these mailbox anymore. Until a bunch of shared mailbox have been migrated. So far I got only positive feedback and no issue were reported. It’s a complete different story when you’re coming from Exchange 2010. In general this upgrade runs very smoothly and is almost seemless for user. Currently I’m upgrading an Exchange 2013 environment to Exchange 2016.
