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Close outage on 29 September 2026

Major outage
Resolved · 17:49–18:16 UTC
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“Application impairment”

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.

Close’s own incident page ↗
When
17:49–18:16 UTC
How long
27 min
Incident open on its page
17:48–18:15 UTC
Components affected
1
Close, 30 days before
No other outages

What broke when

Major outage
Partial outage
Degraded

From Close’s own status page: when it moved each component into trouble, and back.

At the same time

Started in the hour before or during it

And 54 lesser-known services. Problems at the same time are a clue, never proof that one caused another.

Timeline

Times in UTC

  1. Update posted
  2. Investigating
  3. Application UI: partial outage
  4. Fix in place, monitoring
  5. Resolved
  6. Application UI: back to normal

Where this comes from

Stackpulse reads Close’s official status page at status.close.com every minute. The times above are when it reported the problem; the summary is written from its updates and checked against them.

Stackpulse isn’t affiliated with Close. Names and logos belong to their owners.