# Snowflake: Critical incident: INC20000237

**Summary:** Snowflake reported a critical outage in AWS - Europe (Ireland), potentially preventing sign-in, queries, data management and private connectivity. The incident started at 2026-09-25 23:00 UTC and was resolved at 2026-09-26 00:20 UTC, lasting 1 h 20 min. Snowflake implemented a fix and confirmed restoration after monitoring; scheduled and serverless task backlogs cleared by 23:43 UTC. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-09-25 23:00 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/sypcknfz85w6](https://stspg.io/sypcknfz85w6)
- [Company: Snowflake](https://rewindex.com/company/snowflake.md)
- Versions: before (none: first archived) → after incident\_version:164/g8td4vy3qjk7@387cbc446553
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ INC20000237
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ postmortem
```

**4. Added: Start time**

```diff
+ 2026-09-25 23:00 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-09-26 00:20 UTC
```

**6. Added: Affected components**

```diff
+ Applications, AWS - Europe (Ireland) - Applications, AWS - Europe (Ireland) - Databases, Tables, and Views, AWS - Europe (Ireland) - Data Loading and Unloading, AWS - Europe (Ireland) - Security and Privacy Features, AWS - Europe (Ireland) - Virtual Warehouses, Databases, Tables, and Views, Data Loading and Unloading, Security and Privacy Features, Virtual Warehouses
```

**7. Added: Update** (investigating) · 2026-09-25 23:00 UTC

```diff
+ Current status: We're investigating an issue with Snowflake Data Cloud. We'll provide an update within 30 minutes. Customer experience: Customers hosted in the specified regions may be unable to access or use multiple core Snowflake services and features. Affected users may be unable to sign in, execute queries, or manage data, and may be unable to connect to Snowflake via private connectivity, such as AWS PrivateLink. Additionally, they may be unable to continuously stream data into Snowflake using Snowpipe Streaming.
```

**8. Added: Update** (monitoring) · 2026-09-25 23:26 UTC

```diff
+ Current status: We've implemented the fix for this issue, and we'll continue to monitor the environment until we're confident all services are functioning properly. Customer experience: Customers hosted in the specified regions may have been unable to access or use multiple core Snowflake services and features. Affected users may have been unable to sign in, execute queries, or manage data, and may have been unable to connect to Snowflake via private connectivity, such as AWS PrivateLink. Additionally, they may have been unable to continuously stream data into Snowflake using Snowpipe Streaming. Incident start time: 22:35 UTC September 25, 2026 Incident end time: 22:59 UTC September 25, 2026 Preliminary root cause: Our internal metadata database infrastructure in the affected region became unavailable, resulting in connectivity failures across multiple Snowflake services.
```

**9. Added: Update** (resolved) · 2026-09-26 00:20 UTC

```diff
+ Current status: We've implemented the fix for this issue and monitored the environment to confirm that service was restored. Most impact was resolved by 22:59 UTC, with the remaining backlog for scheduled and serverless task execution fully clearing by 23:43 UTC. If you experience additional issues or have questions, please open a support case via Snowflake Community or the Support page in Snowsight. Customer experience: Customers hosted in the specified regions may have been unable to access or use multiple core Snowflake services and features. Affected users may have been unable to sign in, execute queries, or manage data, and may have been unable to connect to Snowflake via private connectivity, such as AWS PrivateLink. Additionally, they may have been unable to continuously stream data into Snowflake using Snowpipe Streaming, and customers using scheduled or serverless tasks may have experienced delayed task execution. Incident start time: 22:35 UTC September 25, 2026 Incident end time: 23:43 UTC September 25, 2026 Preliminary root cause: Our internal metadata database infrastructure in the affected region became unavailable, resulting in connectivity failures across multiple Snowflake services. A root cause analysis (RCA) will be conducted and a summary will be made available within 5 business days.
```

**10. Added: Update** (postmortem) · 2026-10-02 23:36 UTC

```diff
+ Snowflake Engineering has completed the postmortem of this service incident. A detailed Root Cause Analysis \(RCA\) is available on the Snowflake Community site: [https://community.snowflake.com/s/article/INC20000237](https://community.snowflake.com/s/article/INC20000237)
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-09-25 23:00 UTC | Critical incident: INC20000237 (this change) | outage |

All Snowflake changes: [timeline](https://rewindex.com/company/snowflake/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/i70f07339e504ce · Markdown: https://rewindex.com/change/i70f07339e504ce.md · JSON: https://rewindex.com/api/v1/changes/i70f07339e504ce · Generated 2026-10-18T01:54:04.782Z