Whether you're searching your entire computer for a file or want to run a highly refined search, use these Windows and macOS tools to get the job done.

What data file types does Outlook support? While working with Outlook, you will encounter two data file types: OST and PST. OST (Offline Storage Table) file types allow you to work offline.

Outlook creates a .pst file automatically whenever you add a new POP email account. The PST file helps you store your email, backup data, move it to another computer, etc.

How to Find the Hidden Files on Your Phone or Computer You shouldn't mess with some of them—but there are others you should be aware of.

A. Worry not. Outlook has a process for exporting and importing its information with just a few clicks. The problem is moving such a large chunk of data—usually measured in gigabytes—to the new ...

When Outlook is stuck on starting, a faulty add-in or corrupted Outlook data files could be the problem. Take these steps to fix the issue.

Launch Outlook on the computer used to create the archives. Select "Open & Export" from the File menu in Outlook 2013, or "Open" from the File menu in Outlook 2010. Select "Open Outlook Data File ...

The quickest way to find your PST file is to go to your Account Settings screen and select the "Data Files" tab. Outlook displays the location of each data file associated with your mailboxes.

Q: I have a recurring problem with Microsoft Outlook. When I close it before shutting down my computer at night, everything seems fine. But when I try to open Outlook the next time, I get a pop-up ...