On November 12, a major outage disabled key Microsoft 365 services including Outlook, Teams, and SharePoint, disrupting daily workflows across India’s enterprises and customer services well into November 13 with no clear resolution timeline.
- Outage started Nov 12, affecting Microsoft 365 apps globally including India
- Indian enterprises like Infosys, State Bank, and IndiGo faced major disruptions
- Microsoft reports limited recovery progress with no firm resolution time
What happened
Beginning around 11:30 PM IST on November 12, a core Microsoft server process responsible for establishing secure connections became overwhelmed, triggering widespread failures in Exchange Online, Teams, SharePoint, and other key Microsoft 365 services. These failures impacted approximately 430 million users worldwide, with India among the 74 countries experiencing significant downtime. Microsoft's infrastructure failure caused servers to drop out of service in a cascading effect, affecting even critical admin tools used for diagnosing and resolving the issue.
By November 13, the outage remained unresolved with persistent complaints from Indian users peaking at nearly 4,000 reports in the morning and persisting through midday. Key productivity and collaboration tools remained inaccessible, forcing employees and organizations to scramble for alternative communication channels to manage urgent workflows.
What to watch next
Attention now turns to Microsoft’s efforts to restore full service and provide a clear timeline for resolution. The outage’s duration and scope may prompt Indian enterprises to reconsider their dependency on a single vendor's cloud ecosystem, exploring multi-cloud strategies or enhanced backup communication tools to mitigate future risks.
Further scrutiny is expected on how the outage impacted AI and newer technology stacks that rely on Microsoft's Exchange and Graph APIs, as evidenced by disruptions reported by companies like OpenAI and Anthropic. The incident could accelerate discussions around resilience planning for integrated digital workplace environments across Indian businesses.