Incident history
Sep 28, 2026
On September 28, 2026, between 19:23 UTC and 22:08 UTC the Copilot Code Review service was degraded and pull request reviews did not complete in all environments. On average, approximately 70% of requested reviews did no
Sep 28, 2026 · 21:16 → 22:08Sep 24, 2026
Beginning on September 22, 2026 at 11:51 UTC, approximately 1,700 users experienced delays and errors when adding or updating billing address information because requests to the address validation service timed out or fa
Sep 24, 2026 · 16:51 → 20:41Sep 23, 2026
Starting at 07:57 UTC on September 23, GitHub experienced elevated 500 and 404 responses across several application pages. This caused failures when installing GitHub Apps, creating organizations, and making some organiz
Sep 23, 2026 · 10:11 → 04:55Sep 20, 2026
On September 20, 2026, between 21:46 and 22:24 UTC the Pull Requests service was degraded and pull request merge and test-merge commits were created late, with delays reaching approximately four minutes at peak. Merge co
Sep 20, 2026 · 22:13 → 23:22Sep 17, 2026
Between 20:26 and 21:17 UTC on September 17, 2026, GitHub Copilot experienced degradation affecting several GPT models, including GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-5.3-Codex, and GPT-6 Astra. Users encountere
Sep 17, 2026 · 20:59 → 21:49Sep 16, 2026
On September 16, 2026, between 04:40 and 11:45 UTC, the Gemini 3.8 Flash model in GitHub Copilot experienced degraded availability. Requests to this model failed at an average rate of 6.4%, and the impact was highest dur
Sep 16, 2026 · 07:20 → 17:48Sep 15, 2026
On September 15, 2026 between 15:30 and 20:00 UTC, some Copilot code reviews on pull requests failed to complete. The cause was increased latency in an internal caching service that GitHub Copilot Code Review relies on t
Sep 15, 2026 · 19:11 → 20:00On September 15, 2026, between 05:45 and 09:50 UTC, the Claude Fable 5.1 model in GitHub Copilot experienced intermittently degraded availability, with an average error rate of 2.8%. During brief recurring 15 minute peri
Sep 15, 2026 · 09:47 → 11:17Sep 14, 2026
On September 14, 2026, between 16:10 and 19:01 UTC, some customers using GitHub Actions larger runners experienced longer-than-normal wait times for jobs to start. During this period, <b>5.7%</b> of larger-runner jobs we
Sep 14, 2026 · 18:40 → 19:35Sep 13, 2026
On September 13, 2026, between 08:43 and 10:44 UTC, GitHub experienced degraded availability across approximately 28 services, including Issues, Pull Requests, Actions, Codespaces, Pages, Notifications, Code Scanning, Gi
Sep 13, 2026 · 09:16 → 10:44Sep 4, 2026
On September 4, 2026, between approximately 21:45 and 22:07 UTC, some users experienced errors and elevated latency for repository operations. The incident was fully resolved at 22:23 UTC.<br /><br />The cause was a capa
Sep 4, 2026 · 22:02 → 22:23On September 4, 2026, between 20:04 and 22:26 UTC, GitHub Copilot code review experienced an increased failure rate. Affected pull request reviews failed to complete or post review comments.<br /><br />The incident was c
Sep 4, 2026 · 20:39 → 22:26Sep 3, 2026
Between 13:22 and 17:11 UTC on September 03, 2026, GitHub Copilot experienced degradation affecting several Grok models, including Grok 4.5 and Grok 4.6. Users encountered elevated error rates, but other models were not
Sep 3, 2026 · 14:17 → 17:11Sep 1, 2026
On September 1, 2026, between approximately 14:01 and 16:01 UTC, updates in response to pushes were delayed, temporarily showing stale diffs. The median time to refresh a diff after a push rose from the normal level of a
Sep 1, 2026 · 15:00 → 16:01