Configuring preferences and options in Outlook.com
I now have a ticket open through the "contact support" in the app... but so far it's just been deleting/reinstalling account and clearing the cache - no sign that there's any recognition of the underlying problem or cause yet. But of course... when I clear the data because it's grown too big I lose all the chat with support.... what a mad system. That avenue of support (which you would think would be the most appropriate) cannot be transferred to the web....
My S9s have 64G too - but often the OS falls over at about 7 or 8 Gig of outlook data - but the error message is "too many files", not lack of storage.
I think we're in for a long haul on this one.....
M