IT Professionals:
On September 15 at 8AM, all existing and new accounts will require modern authentication for Exchange Online by default.
There are 212 unique accounts that have used basic authentication in the last three days. We believe the impact on these accounts should be minimal, but if they do encounter an error message, please follow the instructions on how to remove the email account profile in the email application, and then re-add the account profile on your device.
–IT Community Partnerships on behalf of Enterprise Microsoft Administration