Hi, I am migrating from exchange 2010 (sbs 2011) to exchange 2016.
I have a test account that I have migrated from 2010 to 2016. When i open outlook after the mailbox move, it connects and mentions that it needs restarting to reconfig itself. Which i do. All works fine.
If I then close and open outlook, i get the below screen shot.
I am testing this with outlook 2010.