Using Classic Outlook on Windows for personal email, calendar, and contact management
I'm currently using version 2205 (Build 15525.20356). It just updated after a Win10>11 upgrade. Arrows disappeared.
If you open up a new message, you will see the 'down' caret icon in the lower right of the main toolbar. Click on that.
You should then see this:
Click on 'Show Quick Access Toolbar'. You should then see this after it closes:
VOILA!!!
You may have to also do this for an existing message. Close it, then they should all open up that way going forward.
Dear Microsoft....please stop taking the easy way out with all of these canned responses. They're about as helpful as 'Network Troubleshooter' is. 'Read' the issue, find a real solution, then post it. Please. All of your suggestions in the initial response takes the better part of half a day. My solution...about 32 seconds if you dilly-dally.