I get this message "Call us overprotective, but..." and then asking for a security code.  I have tried having a code sent to both my phone + email but no code is ever sent.  Now I've been told that this is the last time I will be able to postpone entering a code.  I am about to be shut out of my email because I can't provide a code.

Outlook doesn't appear to have any real customer service, just this community forum - which is not a replacement for knowledgable people trained to resolve issues.