Outlook outage Globally

Posted by AppuniAkhil@reddit | sysadmin | View on Reddit | 13 comments

Users may be unable to access their mailboxes using any connection method.

More info

Impacted connection methods include, but may not be limited to:

- Representational State Transfer (REST) API

- Outlook on the web

- Exchange ActiveSync (EAS)

- Messaging API (MAPI)

Scope of impact

Users attempting to access their Exchange Online mailbox using any connection methods may be impacted.

Preliminary root cause

A recent service update to an authentication component is unintentionally preventing access for a subset of users, resulting in intermittent service unavailability.

Find the below comments screenshots