Microsoft is currently investigating a service disruption affecting Exchange Online users who are experiencing difficulties accessing their mailboxes through one or more connection methods. The issue, tracked under Microsoft 365’s service health dashboard, has prompted multiple status updates throughout Monday, March 16, 2026. Reports began surfacing earlier on Monday, with Microsoft issuing its first formal […] The post Microsoft Exchange Online Mailbox Access Outage Affects Users Globally appeared first on Cyber Security News.