In March, we experienced four incidents that resulted in degraded performance across GitHub services.

The GitHub Blog provides updates, announcements, and insights from the world's leading software development platform, covering topics such as new features, community highlights, and industry trends. Developers can learn about GitHub's latest developments, best practices for collaboration, and tips for maximizing productivity on the platform.

GitHub Blog

GitHub's March 2026 availability report details four incidents causing degraded performance. The first (March 3) was triggered by a bug during a caching mechanism deployment that caused mass cache expiration, leading to ~40% request failures on github.com and ~21% errors on Copilot. The second (March 5) saw GitHub Actions severely impacted for nearly 3 hours due to incorrect Redis load balancer configuration during infrastructure updates. The third (March 19-20) involved the Copilot Coding Agent going down twice due to a system authentication issue preventing datastore connectivity, with error rates peaking at 100%. The fourth (March 24) affected Microsoft Teams integrations for nearly 3 hours due to an upstream dependency outage. GitHub outlines remediation steps for each incident including killswitches, improved monitoring, automated credential lifecycle management, and configuration change safeguards.

GitHub availability report: March 2026