Using New Outlook on Windows for personal email, calendar, and contact management
Hi Lila,
In the new Outlook for Windows, there is currently no separate setting to choose a default download folder for email attachments. Attachments normally use your Windows default Downloads location.
You can change the Windows Downloads folder by opening File Explorer > right-click Downloads > Properties > Location > Move, then select the folder you prefer.
You can also use Save As when downloading an attachment if you want to choose a different location each time.