# Astronomer: Critical incident: Certificate revocation affecting access to some Astro deployments

> Critical incident: Certificate revocation affecting access to some Astro deployments. Detected 2026-11-12 by Rewindex: what changed on Astronomer’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/i917735d630a9ab
Last updated: 2026-11-12T14:23:18Z

**Summary:** _summary pending_
- Kind: Major incident · Label: critical (vendor)
- Changed: 2026-11-12 14:18 UTC · Detected: 2026-11-12 14:23 UTC
- [Source: https://status.astronomer.io/incidents/01M781ZJ6B5KE76NGN21BJPP43](https://status.astronomer.io/incidents/01M781ZJ6B5KE76NGN21BJPP43)
- [Company: Astronomer](https://rewindex.com/company/astronomer.md)
- Versions: before (none: first archived) → after incident\_version:135/01M781ZJ6B5KE76NGN21BJPP43@287299585203
- Change 1 of 2 for this incident

Incident page (full timeline): [Certificate revocation affecting access to some Astro deployments](https://rewindex.com/company/astronomer/incidents/01M781ZJ6B5KE76NGN21BJPP43.md)
## What changed

**1. Added: Title**

```diff
+ Certificate revocation affecting access to some Astro deployments
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ investigating
```

**4. Added: Start time**

```diff
+ 2026-11-12 14:18 UTC
```

**5. Added: Update** (investigating) · 2026-11-12 14:18 UTC

```diff
+ A certificate authority incident has caused Google Trust Services to revoke a number of TLS certificates for astronomer.run, which Astro deployments use for HTTPS access. Users whose browsers or network gateways enforce certificate revocation checks may be unable to access the Airflow UI or other HTTPS endpoints of affected deployments. Our engineering team has identified the affected certificates and is replacing them to restore access. We will provide an update as certificates are reissued.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-11-12 14:18 UTC | Critical incident: Certificate revocation affecting access to some Astro deployments (this change) | critical |
| 2026-11-12 16:13 UTC | [Incident updated: Certificate revocation affecting access to some Astro deployments](https://rewindex.com/change/r0ca8476818f326.md) |  |

Next: [change](https://rewindex.com/change/r0ca8476818f326.md) · 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._

## Cite this

Critical incident: Certificate revocation affecting access to some Astro deployments on Astronomer’s status page, changed 2026-11-12 14:18 UTC (change 1 of 2).

- Canonical URL: https://rewindex.com/change/i917735d630a9ab
- Citation: Astronomer, “Critical incident: Certificate revocation affecting access to some Astro deployments” (2026-11-12 14:18 UTC). Archived by Rewindex: https://rewindex.com/change/i917735d630a9ab (CC BY 4.0).
- Markdown link: `[Astronomer: Critical incident: Certificate revocation affecting access to some Astro deployments (2026-11-12)](https://rewindex.com/change/i917735d630a9ab)`


---
Canonical: https://rewindex.com/change/i917735d630a9ab · Markdown: https://rewindex.com/change/i917735d630a9ab.md · JSON: https://rewindex.com/api/v1/changes/i917735d630a9ab · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-12T16:44:08.160Z