Created a new Profile using Control Panel -- led to partial success.
I used the Control Panel to create a new profile for a Gmail account I have. My Gmail settings say that POP is enabled. Gmail wants incoming server pop.gmail.com, SSL= Yes; Port = 995. The Outlook dialog does not include a way to enter SSL or Port. Similarly, Outlook does not have any special settings for the outgoing server (smtp.gmail.com). Outlook does have a check box for Require logon using SPA. I've entered my gmail password correctly, but I get a Fail message for POP3 server regardless of whether I set the SPA checkbox or not.
Nevertheless, I did get a new profile defined in Outlook. I still could not open Outlook without the error unless I loaded in Safe Mode. Using Safe Mode, I was able to re-establish my verizon email account on the AOL platform. I had to create a new Outlook file, so I lost all of my old Contacts and Folders.
I still cannot open Outlook normally. It will only open in Safe Mode.
FYI, I am not using Microsoft 365. My Office suite (2019) was purchased through a deal I get at work and loaded using a license file.
Is there a way to de-install and re-install Outlook?