“Recent files” collection

How To Find Where Outlook Stores Temporary Attachments – Ones that Don’t Appear in “Recent Items” in Microsoft Office

Here's the scenario. You receive an email attachment in Microsoft Outlook. You open that attachment directly from the email message, make a bunch of edits (and perhaps save them along the way) and close your Office document. Then a while later, you want to go back to that document, only to find that it does not appear in your "Recent"…