Microsoft reports positive results in fixing global 365 service outage
The company is seeing improved server stability after applying a patch to its infrastructure to restore Outlook and Teams services.
Microsoft reported on Friday that it is seeing "positive results" for server stability as it works to fix a global outage affecting Microsoft 365 services. According to The Times of India, the company applied an "upstream authentication/routing configuration component patch" to part of its infrastructure to address how users connect to its servers.
The disruption began around 11:30 pm IST on Thursday when users in the Americas reported they could not reach Exchange Online mailboxes. Impacted services include Outlook, Microsoft Teams, SharePoint Online, Microsoft 365 Copilot, Microsoft Defender XDR, OneDrive, and OneNote.
Microsoft clarified that the issue was not caused by a spike in traffic, but by several servers going offline unexpectedly and failing automated health checks. The company stated it is not aware of any malicious activity or cyberattack causing the incident, according to Microsoft executive Charles Lamanna.
The outage has affected various sectors globally. In India, IndiGo and Akasa Air reported impacts to email support services, while AI companies OpenAI and Anthropic faced issues with Microsoft connectors. In Japan, government email services went down, and in the UK, several police forces asked the public to call 101 instead of filing online reports.
Microsoft is currently monitoring the patch and working to roll it out to servers in active regions as they come back online. The company has promised to publish a Post-Incident Report detailing the root cause and repairs once the issue is resolved, though no timeline for full restoration has been provided.