# Close outage on 29 September 2026

> On 29 September, Close had a major outage affecting its Application UI, which was listed from 17:48 to 18:15 UTC, about 27 minutes. Close's postmortem gave a slightly different window, saying its systems were unavailable from 17:40 to 18:10 UTC. It said a database migration run during a deployment raised error rates on servers still running the previous version, and that service was restored by reverting the change. OpenAI also reported elevated errors across ChatGPT, Codex and its API at the same time, from 17:52 UTC.

- Service: [Close](https://stackpulse.app/services/close.md)
- Severity: major_outage
- Title on the status page: Application impairment
- Started: 2026-09-29 17:49 UTC
- Ended: 2026-09-29 18:16 UTC
- Lasted: 27 min
- Incident open on the status page: 17:48–18:15 UTC
- The status page's incident: https://stspg.io/4vzsppvqmv4k
- Page: https://stackpulse.app/services/close/outages/2026-09-29-1749

## What broke when (UTC)

| Component | Status | From | To |
|---|---|---|---|
| Application UI | partial outage | 2026-09-29 17:48 | 2026-09-29 18:15 |

## At the same time

- [OpenAI](https://stackpulse.app/services/openai.md): issue from 2026-09-29 17:52 UTC

Problems at the same time are a clue, never proof that one caused another.

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