Microsoft is working to restore services following a major global outage that disrupted Outlook, Microsoft Teams and several other Microsoft 365 applications, affecting businesses and government organisations across multiple regions, including the UAE.
The disruption began on Thursday, 12 November, and continued into Friday, leaving many organisations struggling to access email, collaborate with colleagues and use applications connected to Microsoft’s cloud-based productivity ecosystem.
Outlook and Exchange Online were among the most significantly affected services. Microsoft Teams, Microsoft 365 Copilot, SharePoint Online and other enterprise applications also experienced varying degrees of disruption. The incident has highlighted the extent to which businesses depend on Microsoft’s cloud infrastructure for everyday operations, from email and document management to collaboration and business process automation.
According to Microsoft’s service health updates, the problem involved a significant number of servers becoming unexpectedly unavailable across multiple regions. This resulted in elevated load on the remaining infrastructure and connectivity problems affecting customers.
The company subsequently identified an overwhelmed core process on affected servers that was causing them to stop responding.
UAE Businesses Among Those Affected
The disruption was also reported across the UAE, where Outlook, Microsoft 365 and Teams featured prominently among the services experiencing problems.
Downdetector reports cited by Gulf News showed a significant increase in outage reports from users in the country. The disruption was not limited to the UAE, with reports also emerging from India, Australia, Japan, Europe and North America.
For businesses that rely on Microsoft 365 for internal and external communications, the outage created difficulties ranging from delayed email delivery to problems accessing calendars, scheduling meetings and retrieving information stored within connected applications.
The disruption also affected organisations using Microsoft’s services as part of their wider operational infrastructure. Microsoft reported issues with Microsoft Graph requests involving Exchange Online data, while some Planner, Intune and SharePoint functions were also affected.
Microsoft Teams’ core messaging and online meeting capabilities remained largely functional in some scenarios, although features dependent on Exchange Online, including calendar access and meeting scheduling, experienced problems.
Recovery Efforts Face Setbacks
Microsoft’s initial response involved restarting affected servers, redistributing traffic and moving connections to alternative infrastructure wherever possible. However, the recovery process proved more complicated than expected. The company found that some servers returned to service became unresponsive again after receiving traffic.
Microsoft consequently introduced additional traffic management measures, temporarily restricted certain types of traffic in affected locations and began testing servers rebuilt using an earlier software configuration. It also paused deployments and configuration changes while investigating the incident.
The company acknowledged that its earlier recovery measures were not producing the expected results and said it was pursuing alternative approaches to restore capacity.
Implications for the IT Channel
The outage provides an important reminder for organisations and technology partners that cloud adoption must be accompanied by appropriate business continuity planning.
For managed service providers, system integrators and enterprise IT teams, the incident reinforces the importance of helping customers understand their dependence on individual cloud platforms and the potential consequences of service interruptions.
While cloud services reduce the need for organisations to maintain extensive on-premises infrastructure, they also introduce dependencies that need to be considered when designing business continuity strategies. Businesses may need alternative communication channels, independent access to critical documentation and clearly defined procedures for operating during prolonged service disruptions.
The incident also raises questions about the resilience of interconnected cloud services. When email, collaboration, document management and other applications depend on the same underlying infrastructure, a problem affecting one component can create a wider operational impact.
For the enterprise technology channel, the lesson is clear: cloud migration is only one part of digital transformation. Ensuring that customers can continue operating when cloud services become unavailable is equally important.
