Microsoft 365 outage resolving after nearly 24 hours

Microsoft 365 service disruption begins

According to MacRumors, Microsoft 365 services experienced a significant outage that began at approximately 1 p.m. Eastern Time on Thursday. The disruption impacted users globally, affecting businesses, educational institutions, and governments. The company confirmed that the underlying technical issue has been fixed and is now seeing broad recovery and stability across its services.

Services affected during the outage

The outage caused several key functionalities to fail for users. Customers were unable to access Outlook email and encountered issues using certain features within Teams and Copilot. Furthermore, Exchange accounts integrated into Apple Mail were also affected by the downtime. While most calling, meeting, and messaging functions remained operational, some users experienced errors when attempting to schedule meetings or add calendar entries.

Technical cause and context

Microsoft stated that the incident was caused by a technical issue introduced during an earlier network capacity upgrade. This problem surfaced following a recent network change. The company explicitly clarified that the outage was not related to any cyberattacks or issues involving AI agents. Microsoft issued an apology for the disruption, noting that they take the trust placed in their services very seriously.

Recovery process and next steps

Microsoft restored services gradually to ensure stability at every stage, which contributed to the extended duration of the incident. The company is currently working to restore full access to all remaining customers and regions. Microsoft has committed to providing a full post-incident report once their internal review is complete. Users should check the Microsoft Service Health Status page for the latest updates on service availability.