Unable to verify account name or password on Outlook

I can no longer connect to my Outlook mail account using Apple Mail. When I try to sign in , I get a message "Unable to verify account name or password." This behavior started about a week ago (I've had the Outlook account for years) . I can access Outlook Mail with Safari on my Mac and with the Outlook apps on my iOS devices. I am running Sonoma 14.5. I have tried re-entering password and also changing password. It may reconnect for a short period but then revert to "unable to verify account name or password" Has anyone else experienced this issue?