GitHub Outage Knocks Out Developer Tools and Copilot AI Service Globally

GitHub experienced a widespread platform outage on Monday morning that lasted more than three hours, interrupting software development workflows for engineering teams around the globe.

The disruption began at approximately 6:40 a.m. Pacific time. Within an hour and a half of the initial failure, performance degraded across nearly every component of the platform, impacting web access, code review and merge capabilities, automated continuous integration pipelines, and the GitHub Copilot AI coding engine.

Engineers identified the root cause of the incident shortly after 9:30 a.m. and managed to stabilize core systems by 10:00 a.m., according to GitHub's official status dashboard. As general services began to recover, the company noted that GitHub Copilot remained classified as an active incident while operations teams continued to monitor overall infrastructure stability.

The platform operator, which supports an estimated 225 million registered users worldwide, did not immediately publish specific technical details regarding what triggered the platform failure, as first reported by GeekWire.

The incident underscores ongoing operational pressure on the infrastructure powering the Microsoft-owned developer platform, driven largely by rapid adoption of automated AI coding tools. GitHub Chief Technology Officer Vladimir Fedorov revealed in an April update that after launching an effort last autumn to expand system capacity by ten times, leadership realized by February that platform demand would require scaling infrastructure to thirty times its existing footprint.

To handle the heightened workloads created by AI agent development, Microsoft has been expediting GitHub’s cloud migration onto Microsoft Azure while pursuing a broader multi-cloud footprint, a company spokesperson disclosed to Business Insider in June. As part of that infrastructure plan, GitHub has also leased compute capacity from competing cloud provider Amazon Web Services.