GitHub experienced a critical incident on August 20, 2026, lasting 9h 54m. The incident has been resolved; the full update timeline is below.
Update timeline
- investigating Aug 20, 2026, 02:43 PM UTC
We are investigating reports of impacted performance for some GitHub services.
- investigating Aug 20, 2026, 02:51 PM UTC
Users may experience delays when starting tasks using Copilot Cloud Agent. We are actively investigating the issue and will provide updates as we learn more.
- investigating Aug 20, 2026, 03:01 PM UTC
We have identified the problematic component and are working to fail over to a healthy instance. Further updates will be provided as we perform mitigations.
- investigating Aug 20, 2026, 03:41 PM UTC
We are experiencing issues with Copilot Cloud Agent tasks, resulting in newly started tasks not properly displaying on-going progress. These Copilot Cloud Agent tasks are still being completed correctly but lack proper visibility. We are actively investigating the issue and will provide updates as we learn more.
- investigating Aug 20, 2026, 04:14 PM UTC
Users are experiencing delays when starting tasks using Copilot Cloud Agent and are not be able to see the status of these tasks. Copilot Cloud Agent tasks are still being completed. We have identified the cause of the issue and are putting mitigations in place to return service to normal levels. We will provide another update about the expected recovery time shortly.
- investigating Aug 20, 2026, 05:05 PM UTC
We are seeing signs of recovery for Copilot Cloud Agent task status visibility, but this recovery is slower than anticipated. We are pursuing additional mitigating measures to accelerate recovery.
- investigating Aug 20, 2026, 05:32 PM UTC
We are observing gradual recovery for Copilot Cloud Agent task status visibility, with session output delayed approximately 1 hour. We have taken additional steps to accelerate the recovery and are continuing to monitor the impact.
- investigating Aug 20, 2026, 06:04 PM UTC
We are continuing to observe gradual recovery for Copilot Cloud Agent task status visibility, with session output delayed by approximately 1 hour. We have taken additional steps to accelerate the recovery and are continuing to monitor the impact.
- investigating Aug 20, 2026, 06:45 PM UTC
We are continuing to observe gradual recovery for Copilot Cloud Agent task status visibility, with session output delayed by approximately 1 hour. We have taken additional steps to accelerate the recovery and expect this to take effect within the next hour.
- investigating Aug 20, 2026, 07:35 PM UTC
We are continuing to observe gradual recovery for Copilot Cloud Agent task status visibility. Session output continues to be delayed by approximately 1 hour as our remediation steps take effect.
- investigating Aug 20, 2026, 08:37 PM UTC
We are seeing gradual recovery in Copilot Cloud Agent task status visibility as we deploy a fix for the root cause. Session output remains delayed by approximately one hour while remediation continues.
- resolved Aug 21, 2026, 12:37 AM 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.