Microsoft 365 outage disrupts Outlook, Teams, and SharePoint; experts warn against password resets

Microsoft 365 outage disrupted Outlook email access and delayed messages, with issues also affecting Teams and SharePoint. Experts warn users against resetting passwords or reinstalling Office, as these actions won't fix problems caused by Microsoft's service disruption. MQTec Managing Director Moneeb Qureshi advised against unnecessary account changes, saying they could create additional configuration problems after services are restored. The outage began Thursday, affecting Exchange Online, with users experiencing mailbox access issues across desktop, web, and mobile applications. Microsoft's investigation found an unexpectedly large number of unavailable servers increased pressure on remaining infrastructure, with no indication of an attack. Delayed emails aren't necessarily lost, as Microsoft extended Exchange Online's delivery window to 48 hours. Businesses are advised to use backup communication arrangements and cached mode for offline access.