Μake us preferred on Google Microsoft said all of its services, including Teams, Outlook and Copilot, were fully back up after an outage of more than 24 hours that disrupted communications at companies, organisations and governments.
The U.S. technology giant had earlier said there was no sign of a cyberattack. It blamed the disruption on server failures caused by a “technical error during the process of upgrading its network capacity”.
Engineers’ first fixes brought the servers back online, but the sudden return of millions of users knocked them offline again.
To break the cycle, Microsoft had to throttle data traffic by region, roll back to earlier versions of its software, and reconnect users slowly in stages, checking that the system was stable at each step.
The company said it would publish “a full report” on the incident “once it has completed the necessary checks”.
