Was able yesterday to access the admin portal, went into exchange admin and setup all accounts for MFA. Today I'm unable to access the portal, receiving:
Server Error in '/' Application.
Runtime Error
Description: An exception occurred while processing your request. Additionally, another exception occurred while executing the custom error page for the first exception. The request has been terminated.
Additionally, on my desktop Outlook app I can add my other exchange accounts but this one continually fails. I've followed recommendations of suspending AV, removing credentials, and setting server settings manually but it fails not able to establish a secure connection and then unable to establish an unsecure connection.
Thanks