ChatGPT (OpenAI) · 1h ago
Authentication errors for some users
ResolvedYes — ChatGPT had a problem on October 21, 2026, and ChatGPT (OpenAI) has since marked it resolved. ChatGPT (OpenAI)'s latest word: “On October 20, from 9:35 to 10:35 a.m. PDT, some users near Illinois experienced authentication errors with the API, ChatGPT, and Codex. We rolled back a configuration change, and service was restored.”
Timeline
Started: 10/21/2026, 10:36:29 PM
Last update: 10/21/2026, 11:03:45 PM
Resolved: 10/20/2026, 5:35:00 PM
Updates
resolved
On October 20, from 9:35 to 10:35 a.m. PDT, some users near Illinois experienced authentication errors with the API, ChatGPT, and Codex. We rolled back a configuration change, and service was restored.
10/21/2026, 10:36:29 PM
investigating
Some users near Illinois experienced authentication errors with the API, ChatGPT, and Codex.
10/21/2026, 10:36:29 PM
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