GitHub incident
Authentication issues related to API requests
GitHub experienced a critical incident on June 10, 2026 affecting API Requests and Issues, lasting 1h 18m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jun 10, 2026, 03:20 PM UTC
We are investigating reports of impacted performance for some GitHub services.
- investigating Jun 10, 2026, 03:23 PM UTC
API Requests is experiencing degraded availability. We are continuing to investigate.
- investigating Jun 10, 2026, 03:27 PM UTC
Issues is experiencing degraded performance. We are continuing to investigate.
- investigating Jun 10, 2026, 03:27 PM UTC
We are investigating issues related to sporadic authentication failures impacting approximately 15% of API traffic. We will continue to investigate and provide updates.
- investigating Jun 10, 2026, 03:46 PM UTC
We continue to investigate issues related to sporadic authentication failures, impacting approximately 15% of API traffic. Further updates will be provided as we work to mitigate.
- investigating Jun 10, 2026, 03:46 PM UTC
The degradation affecting Issues has been mitigated. We are monitoring to ensure stability.
- investigating Jun 10, 2026, 04:21 PM UTC
We continue to investigate issues related to sporadic authentication failures, impacting approximately 15% of API traffic. Erroneous 401 responses are causing app integrations to trigger authentication flows. We have identified a problematic component in our infrastructure and are working to mitigate.
- investigating Jun 10, 2026, 04:36 PM UTC
The degradation affecting API Requests has been mitigated. We are monitoring to ensure stability.
- monitoring Jun 10, 2026, 04:37 PM UTC
The degradation has been mitigated. We are monitoring to ensure stability.
- resolved Jun 10, 2026, 04:39 PM UTC
This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.