Microsoft Struggles to Restore Services

Microsoft continued efforts to restore Outlook, Teams and other services on Friday after a global outage extended into Asia-Pacific business hours.

The disruption began on Thursday and affected users across the United States and several international markets. Microsoft said it had applied adjustments to affected servers, but the changes had not produced a sustained recovery. Some regions experienced partial improvements.

The company said it was reviewing additional measures to strengthen infrastructure stability. It also reported that it was not aware of malicious activity causing the outage.

Downdetector recorded more than 130,000 reports of Outlook problems in the United States at the peak of the disruption. More than 18,000 reports remained at 11:30 p.m. ET, while outages continued across India, Australia and Japan.

Exchange Online Disruption Affects Microsoft 365

Microsoft identified problems affecting services that depend on Exchange Online, its cloud-based platform for email, calendars, contacts and tasks.

Features relying on Exchange Online and email experienced disruptions, while Microsoft 365 functions that did not depend on the platform remained operational.

The company said users could experience gradual recovery as servers returned to service and applications reconnected.

Australian Home Affairs and Cyber Security Minister Tony Burke said Microsoft believed the incident was not caused by a cyberattack. He compared the situation to the 2024 CrowdStrike disruption, suggesting that a problematic update could be involved, although Microsoft had not confirmed that explanation.

Government Agencies and Businesses Affected

The outage reached government organizations in several countries. Australia’s intelligence agency and federal police were among the affected institutions, while the US House of Representatives said its users had experienced problems and its engineers were working with Microsoft.

Japanese Deputy Chief Cabinet Secretary Masanao Ozaki also confirmed that the disruption was affecting government information system infrastructure.

Businesses across multiple industries reported operational problems. OpenAI and Anthropic experienced issues with their Microsoft connectors, while Indian airlines IndiGo and Akasa Air reported disruptions to email support services.

Financial institutions in Taiwan also faced difficulties involving fund management. One company reportedly cancelled a previously scheduled bond repurchase agreement transaction because of the disruption.

Electric truck manufacturer Workhorse Group postponed its third-quarter earnings announcement from November 12 to November 16, citing business disruptions caused by the outage.

Repeated Outages Raise Reliability Questions

The latest incident follows previous disruptions involving Microsoft’s productivity and cloud services, including a Microsoft 365 outage in January and an Azure outage in October of the previous year.

Although customers may find it difficult to move away from Microsoft’s integrated software ecosystem, repeated service interruptions could influence future technology purchasing decisions.

The concern is particularly relevant as Microsoft continues expanding its artificial intelligence offerings, including Copilot. Enterprise customers evaluating additional services may place greater emphasis on infrastructure reliability and operational continuity.

What Investors Should Watch Next

Investors will be monitoring Microsoft’s explanation of the server failures, the speed of its recovery efforts and any measures introduced to prevent similar disruptions.

The broader issue extends beyond the immediate financial impact of a single outage. Reliability is central to Microsoft’s ability to retain enterprise customers and expand adoption of its cloud-based productivity and AI services.

Further disruptions could increase scrutiny from corporate IT departments as organizations evaluate the risks of concentrating critical operations within a single technology provider.