# Astronomer: Major incident: Astro UI and API are appearing offline for some users

**Summary:** Astro UI and API appeared offline for some users in a major incident starting 2026-10-13 18:02 UTC, resolved at 2026-10-13 19:53 UTC (1 h 51 min). Existing tasks and Dag Runs continued successfully. Restarting a service experiencing higher-than-expected load restored functionality; Astronomer identified a proximate cause but did not disclose it. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-10-13 18:02 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://status.astronomer.io/incidents/01M4V6VPAPNE7RC6Q1KCXGMVYE](https://status.astronomer.io/incidents/01M4V6VPAPNE7RC6Q1KCXGMVYE)
- [Company: Astronomer](https://rewindex.com/company/astronomer.md)
- Versions: before (none: first archived) → after incident\_version:135/01M4V6VPAPNE7RC6Q1KCXGMVYE@eeb867763337
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Astro UI and API are appearing offline for some users
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-13 18:02 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-13 19:53 UTC
```

**6. Added: Update** (investigating) · 2026-10-13 18:02 UTC

```diff
+ The Astro Core API is showing an elevated number of errors. We are investigating actively and will update as soon as we know more. Next update will be within the next 30 minutes.
```

**7. Added: Update** (investigating) · 2026-10-13 18:13 UTC

```diff
+ Our metrics indicate no impact on existing tasks and Dag Runs. They are continuing to run successfully. We are continuing to investigate what is causing the API and UI errors and are attempting a workaround.
```

**8. Added: Update** (monitoring) · 2026-10-13 18:28 UTC

```diff
+ We have restarted one of our services that was experiencing higher than expected load.  This has returned the Astro UI and API to functionality. We are continuing to investigate root cause.
```

**9. Added: Update** (resolved) · 2026-10-13 19:53 UTC

```diff
+ We have identified the proximate cause of the incident and are confident that the situation is stable. We will follow up with more detail in a postmortem at a later date.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-13 18:02 UTC | Major incident: Astro UI and API are appearing offline for some users (this change) | outage |

All Astronomer changes: [timeline](https://rewindex.com/company/astronomer/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i2129ed343c17d1 · Markdown: https://rewindex.com/change/i2129ed343c17d1.md · JSON: https://rewindex.com/api/v1/changes/i2129ed343c17d1 · Generated 2026-10-18T01:30:40.160Z