Unable to add email account to Outlook in Microsoft 365

[#1]

Thanks once again for your time and help, greatly appreciated.  I installed Thunderbird and setup the account which seems to be working, it is obviously Outlook which is being too clever for its own good 🙂

[#2]

Thanks for getting back to me @jbweller 

No problem at all. Awesome, aye it certainly is odd but I'm glad to see Thunderbird's working better for you.‌Let me know if you have further issues or there's anything else you'd need help with.