# Snowflake: Major incident: INC20000046

**Summary:** Snowflake reported a major outage in AWS - Europe (London), preventing Snowpark Container Services access and intermittently blocking Snowsight sign-ins with HTTP 500 errors. The stated impact began at 22:38 UTC June 22, 2026; recorded duration was 1 h 29 min, with resolution at 2026-06-23 02:35 UTC after reverting a recent configuration change. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-06-23 01:05 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/9rwx4gqxws80](https://stspg.io/9rwx4gqxws80)
- [Company: Snowflake](https://rewindex.com/company/snowflake.md)
- Versions: before (none: first archived) → after incident\_version:164/0nxtj28g9ycc@43e24da89e12
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ INC20000046
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ postmortem
```

**4. Added: Start time**

```diff
+ 2026-06-23 01:05 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-06-23 02:35 UTC
```

**6. Added: Affected components**

```diff
+ Applications, AWS - Europe (London) - Applications, AWS - Europe (London) - Snowpark Container Services, Snowpark Container Services
```

**7. Added: Update** (investigating) · 2026-06-23 01:05 UTC

```diff
+ Current status: We're investigating an issue with Snowpark Container Services and Snowsight. We'll provide an update within 60 minutes. Customer experience: Customers hosted in the specified region may be unable to access Snowpark Container Services, and may intermittently be unable to sign in to Snowsight. Affected users may see HTTP 500 errors. Incident start time: 22:38 UTC June 22, 2026
```

**8. Added: Update** (monitoring) · 2026-06-23 01:43 UTC

```diff
+ Current status: We identified and reverted a recent configuration change to resolve the impact. We'll continue to monitor the environment until we're confident all services are functioning properly. We'll provide another update within 60 minutes. Customer experience: Customers hosted in the specified region may have been unable to access Snowpark Container Services, and may have intermittently been unable to sign in to Snowsight. Affected users may have seen HTTP 500 errors. Workaround: There were no available workarounds for this issue. Incident start time: 22:38 UTC June 22, 2026 Incident end time: 01:28 UTC June 23, 2026 Preliminary root cause: A recent configuration change affected DNS resolution in the region, which caused connectivity failures for Snowpark Container Services and Snowsight.
```

**9. Added: Update** (resolved) · 2026-06-23 02:35 UTC

```diff
+ Current status: We've monitored the environment to confirm that reverting the configuration change restored service. 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 region may have been unable to access Snowpark Container Services, and may have intermittently been unable to sign in to Snowsight. Affected users may have seen HTTP 500 errors. Workaround: There were no available workarounds for this issue. Incident start time: 22:38 UTC June 22, 2026 Incident end time: 01:28 UTC June 23, 2026 Preliminary root cause: A recent configuration change affected DNS resolution in the region, which caused connectivity failures for Snowpark Container Services and Snowsight. A root cause analysis (RCA) will be conducted and a summary will be shared on the Snowflake status page within 5 business days.
```

**10. Added: Update** (postmortem) · 2026-07-02 21:47 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/INC20000046](https://community.snowflake.com/s/article/INC20000046)
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-06-23 01:05 UTC | Major incident: INC20000046 (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/i6f059d8c2be0d3 · Markdown: https://rewindex.com/change/i6f059d8c2be0d3.md · JSON: https://rewindex.com/api/v1/changes/i6f059d8c2be0d3 · Generated 2026-10-18T01:53:22.790Z