Using Classic Outlook on Windows for personal email, calendar, and contact management
When the localized install of Outlook (desktop, not browser) is transitioned to the new version all of the attachments are locked to the cloud instead of local to the machine.
This IMO is the biggest flaw, no option to have the files locally. This is from what I can tell, what's creating the drag and drop issues, attachments especially.
MS - please add an offline sync option like it's always been. 100% cloud is not acceptable.