A major Microsoft 365 outage is continuing to disrupt businesses worldwide, with users experiencing problems accessing Outlook, Exchange Online and several other Microsoft services.
The disruption began on Thursday 12 November and has continued into Friday morning, affecting email access, communication tools and other cloud-based business applications.
Which Microsoft Services Are Affected?
Microsoft has confirmed disruption to Exchange Online, with users reporting difficulties accessing mailboxes, sending and receiving emails, and using Outlook.
Other affected services and features include Microsoft Teams, SharePoint, OneDrive, Copilot and elements of Microsoft Defender.
The impact varies between organisations, with some services remaining operational while others experience intermittent or complete loss of functionality.
What Has Caused the Outage?
Microsoft's investigation has identified problems affecting its server infrastructure, including systems responsible for establishing secure connections.
The company has stated that there is currently no evidence of malicious activity or a cyberattack.
Microsoft is working to restore affected services and has reported some improvements, although full service restoration has not yet been confirmed.
What Should Businesses Do?
Businesses experiencing problems with Microsoft 365 should avoid making unnecessary changes to their systems while Microsoft works to resolve the issue.
Where email services are unavailable, alternative communication methods such as telephone calls should be used for urgent matters.
Sunrise Technologies is aware of the disruption and is monitoring developments.
Customers experiencing unrelated IT issues should continue to contact the Sunrise Technologies support team as normal.
For the latest service information, visit Microsoft's official Service Health page: https://status.cloud.microsoft/
