Disruption with some GitHub services

Resolved

On March 21st, 2025, between 11:45 UTC and 13:20 UTC, users were unable to interact with GitHub Copilot Chat in GitHub. The issue was caused by a recently deployed Ruby change that unintentionally overwrote a global value. This led to GitHub Copilot Chat in GitHub being misconfigured with an invalid URL, preventing it from connecting to our chat server. Other Copilot clients were not affected.We mitigated the incident by identifying the source of the problematic query and rolling back the deployment.We are reviewing our deployment tooling to reduce the time to mitigate similar incidents in the future. In parallel, we are also improving our test coverage for this category of error to prevent them from being deployed to production.

Investigating

Copilot is operating normally.

Investigating

Mitigation is complete and we are seeing full recovery for GitHub Copilot Chat in GitHub.

Investigating

We have identified the problem and have a mitigation in progress.

Investigating

Copilot is experiencing degraded performance. We are continuing to investigate.

Investigating

We are investigating issues with GitHub Copilot Chat in GitHub. We will continue to keep users updated on progress toward mitigation.

Investigating

We are currently investigating this issue.