Microsoft Corporation is working to restore its Outlook and Teams services after a major outage disrupted its Microsoft 365 suite across multiple regions globally.
In an update early Friday, the company said it had implemented additional mitigation measures to restore affected services but was encountering technical issues preventing some of the changes from taking effect as expected.
“We’ve monitored the status of the changes applied to improve serviceability and confirmed they’re not taking as expected,” Microsoft said in a social media post.
The disruption, which began on Thursday, affected users across the Asia-Pacific region and the Americas, with Teams and Outlook among the most impacted services.
Downdetector, an online outage-monitoring platform, recorded at least 4,600 reports of issues with Microsoft 365 as of 00:19 ET (05:19 GMT) on Friday. Reports had peaked at nearly 50,000 users overnight.
Microsoft apologised for the disruption and appealed to affected organisations for patience as its engineers continued efforts to resolve the incident.
“We appreciate your organisation’s patience and understanding while we work with urgency to resolve this incident,” the company said in its latest status update.
Several public and private institutions also reported disruptions, including some government services in the United States and Australia, as well as artificial intelligence startups OpenAI and Anthropic.
Reports indicated that Microsoft did not believe the outage was caused by a cyberattack.
The company has yet to fully restore the affected services, with recovery efforts continuing as it works to address the issues preventing its mitigation measures from being implemented successfully.
