Microsoft 365 outage impacts Exchange Online, Teams, Sharepoint

A widespread Microsoft 365 outage is impacting Exchange Online, Teams, SharePoint, Outlook, and related services, with Microsoft attributing the disruption to a recent change that triggered an influx of retry requests and routing issues; fixes have been deployed across most affected environments and targeted server restarts are underway, yielding partial recovery while some Outlook on the web issues and mail delivery delays persist. A prior July outage is noted as having been caused by a DDoS attack, but the current incident is linked to service changes rather than malicious activity.