What Happened
GitHub experienced an outage on July 21, 2026. The incident lasted approximately 55 minutes.
World's largest source code hosting platform with version control, CI/CD (Actions), code review, project management, and AI coding assistant (Copilot).
Timeline
| Time (UTC) | Status | Details |
|---|---|---|
| 18:25 | Investigating | We are seeing signs of sustained recovery from the upstream provider for GPT 5.3 Codex requests. Requests are succeeding as expected. We are awaiting confirmation from the provider that the issue ... |
| 17:21 | Investigating | The upstream provider continues to return intermittent errors for GPT 5.3 Codex requests. Some users may experience failed or interrupted responses when using this model. Traffic continues to be au... |
| 16:39 | Investigating | We identified that an upstream provider is returning errors for GPT 5.3 Codex requests, causing some users to experience failed or interrupted responses. Traffic is being automatically rerouted to ... |
| 16:04 | Investigating | We are investigating GPT Codex 5.3 performance. |
| 16:03 | Investigating | We are investigating reports of degraded performance for Copilot AI Model Providers |
| 11:46 | Investigating | We have identified a recent code change as a potential cause of the SSH authentication failures affecting deploy key connections. Our engineering team is rolling back this change. Customers using d... |
| 11:04 | Investigating | We are investigating reports of intermittent SSH authentication failures affecting connections that use deploy keys. Customers may experience failed SSH connections when interacting with repositori... |
| 10:31 | Investigating | We are investigating reports of impacted performance for some GitHub services. |
| 12:02 | Resolved | All systems operational |
Impact
The outage lasted approximately 55 minutes. GitHub runs on Azure — check those status pages if you experienced cascading issues.
Resolution
GitHub has recovered and is now operational.
What To Do Next
- View GitHub live status and outage history
- Set up alerts to get notified instantly next time GitHub has an issue
- Compare GitHub reliability with other services
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This post was automatically generated by ServiceAlert.ai's monitoring system. View live status →