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ChangesGitHubDisruption with Copilot Cloud services

GitHub: Incident silently edited: Disruption with Copilot Cloud services

Silent editNot classified yetChanged www.githubstatus.com (opens in new tab)
Summary

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What changed

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ChangedUpdateresolved#1
Before: 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.
After: On October 29, 2026, between 05:50 UTC and 12:40 UTC, Copilot agent sessions on GitHub.com and in VS Code were degraded. Live session updates often failed to load, and on average 2.14% of requests to the agent sessions service failed, with a peak of 8.61%. For about 10 minutes around 09:20 UTC, up to 40% of requests to list or create agent sessions failed. Copilot Chat on GitHub.com showed degraded agent session features during this time. The issue occurred when a large increase in task-list requests from a client experiment overloaded the cache that supports the agent sessions service. We mitigated the impact by increasing cache capacity, reducing nonessential load on the cache, and disabling the client experiment. We are moving rate limiting to separate infrastructure, reducing client polling, and improving our alerting so we can detect and respond to this type of overload faster.

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History of this incident

TodayWednesday, November 4Wed, Nov 4

1 rewrite

Thursday, October 29

4 incident changes

Cite this

Incident silently edited: Disruption with Copilot Cloud services on GitHub’s status page, changed 2026-11-04 18:43 UTC (change 5 of 5).

Title
Incident silently edited: Disruption with Copilot Cloud services
Vendor
GitHub
Date
URL
https://rewindex.com/change/rbe6425d86833f8

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