The global disruption highlights recurring issues in Microsoft 365 services and raises concerns over the resilience of hyperscale cloud platforms amid rising complexity and data loads.

The Microsoft Outlook outage comes after years of frequent issues impacting Microsoft services. In June, an update to Microsoft Outlook left many users unable to read messages or create a new one, Forbes reported. Attempts to do so led to crashes, with Microsoft claiming, “This issue occurs because Outlook cannot open the Forms Library.”

Hackers exploited a zero-day vulnerability in Microsoft SharePoint servers, targeting US federal agencies and other entities.

The last outage for Outlook came in June when we quipped that Microsoft is so keen for users to migrate to the New Outlook email client that it appeared to have broken Classic Outlook… again. On that occasion, the reported issues emerged on virtual desktop infrastructure.

Microsoft’s Outlook email service was down for Outlook.com as well as Outlook mobile apps and desktop programs.

Disruptions to Outlook.com and Outlook clients became known last week. These continue and also affect business customers.

Microsoft Outlook is back up after a major outage affected users around the world. Outage reports began to spike for the widely-used email provider, with Microsoft confirming an issue not long after. After several hours, the outage came to an end, but here's everything we saw...

Millions of frustrated Microsoft users were left unable to access their emails today - but this evening the tech giant said normal service has resumed after the outage

Microsoft Outlook experiences major outage affecting millions globally with login issues and performance problems disrupting morning business operations.