Adding Comcast email to Outlook

On Feb 2, 2024, my comcast email stopped updating in Outlook 365.  After researching and trying  a number of suggested fixes, I finally took some advice and deleted the comcast email from Outlook, intending to reinstall it.  I tried verifying that I could log in to my comcast email through a web browser, but Xfinity would not let me log in without changing the password - which I did today.  Since changing the password, I have re-logged in multiple times on the browser, so I know the username and password are correct. 

I have tried repeatedly to re-add the comcast email back into outlook.  But after adding the correct password during setup, and getting the "we're getting things ready" message in outlook, a popup quickly comes up asking that I enter user name and password for the following server: 

Server imap.comcast.net

The next field is pre-populated with my comcast username

and the final field also appears to be pre-populated with the password. 

(FYI – I’ve tried just using the pre-populated as well as manually entering the new password).  The only two options on this pop-up window to move forward is: "OK", or "Cancel".  When I click OK, the pop-up goes away for a second, then reappears.  Clicking OK again, and it comes right back.  (Note: I experienced this similar pop-up some time ago, and the fix ended up being that comcast had made a change to privacy settings and I had to go in to my comcast email and allow third party access.  This problem acts the same way, with the same pop-up window as was appearing previously, but I've checked and that third party access is still checked in my Xfinity mail account settings - but it's acting the same way with that pesky pop-up immediately coming up asking for username and password).  Seems to once again be a change on Xfinity/comcast end – and forcing the email password change that happened at the same time the comcast email stopped working in outlook.  

My comcast email was working fine in Outlook until now.  Need to know how to fix this access issue and add my comcast email account back into Outlook.

Please help.

Ron.