I found an article that describes how to turn it off for mail apps, but is your problem on a website or in an app? [http://www.slipstick.com/outlook/outlook-apps/turn-off-focused-inbox-in-outlook-apps/ Turn off Focused Inbox in Outlook Apps]

Oh, this one might have the instructions for Outlook websites: https://support.office.com/en-us/article/Focused-Inbox-for-Outlook-f445ad7f-02f4-4294-a82e-71d8964e3978 <ol> <li> <p>In Outlook on the web or Outlook.com, select <img src="https://support.content.office.net/en-us/media/22ecb306-849a-4d04-8885-fe49ec9df8ce.png" alt="Settings icon" title="Settings icon" ms.cmpgrp="content" ms.pgarea="Body" ms.interactiontype="500"> &gt; <b class="ocpUI">Display settings</b> &gt; <b class="ocpUI">Focused Inbox</b>.</p> </li> <li> <p>Under <b class="ocpUI">When email is received</b>, select <b class="ocpUI">Sort messages into Focused and Other</b>. The Focused and Other tabs will appear at the top of your mailbox. You’ll be informed about email flowing to Other, and you can switch between tabs any time to take a quick look.</p> <p>If you want to turn off Focused Inbox, select <b class="ocpUI">Don't sort messages</b>.</p> <p> <img src="https://support.content.office.net/en-us/media/f7a3a7b7-67da-43a4-962f-861dc26b93a0.png" alt="On the Display Settings page you can turn Focused Inbox on or off" title="On the Display Settings page you can turn Focused Inbox on or off" ms.cmpgrp="content" ms.pgarea="Body" ms.interactiontype="500"> </p> </li> <li> <p>Click <b class="ocpUI">OK</b>.</p> </li> </ol>

Thanks much. I don't know why I didn't find the solution myself, because I thought I went through every settings option I could find. Apparently I missed the connection between "display settings" and sorting mail into arbitrary groups. Now I'd like to know why the change was made without my request, but that's another matter. I appreciate the help.