Using New Outlook on Windows for personal email, calendar, and contact management
The only ray of sunshine in this debacle is that prior to trying to change my Classic Outlook server settings as advised by my provider (which did not work) I did take the precaution of saving my .pst file, which my geek from Geeks2U (Australia) was able to use to retain my Classic Outlook.
So I now have the shortcuts to the two Outlooks sitting side-by-side on my task bar. Classic Outlook does not connect to the internet of course, but critically it has all my old emails stored there. These are invaluable, because we are required to keep certain financial information for a minimum of 5 years, and I cannot guarantee that I have copied all critical attachments across to other folders outside Outlook.
If you are reading this, and you're not absolutely certain that you know what you are doing, I recommend that you call in a geek to do the job for you. Yes it costs, but that's a darned sight cheaper in the long run than the stress cause by trying to do the job yourself.
What Microsoft have gained by changing the storage of emails on their server rather than on the user's computer I don't know, except to intrude on our privacy, but, even if that has some benefit, why to change every aspect of the software itself beggars belief. It just reeks of change for change's sake. I have yet to find a single benefit in terms of usability.