# Snowflake: Major incident: INC20000217

**Summary:** Snowflake reported a major outage affecting Databases, Tables, and Views, causing delayed sign-ins, SSO login loops, query execution failures, and data-management errors. The incident ran from 2026-09-14 04:48 UTC to 2026-09-14 06:09 UTC (1 h 21 min); Snowflake implemented a fix and confirmed service restoration. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-09-14 04:48 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/l0wx56h7s2gh](https://stspg.io/l0wx56h7s2gh)
- [Company: Snowflake](https://rewindex.com/company/snowflake.md)
- Versions: before (none: first archived) → after incident\_version:164/8c1snlr8gskb@07946a69d1dc
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ INC20000217
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-09-14 04:48 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-09-14 06:09 UTC
```

**6. Added: Affected components**

```diff
+ AWS - Asia Pacific (Jakarta) - Databases, Tables, and Views, AWS - Asia Pacific (Singapore) - Databases, Tables, and Views, AWS - Asia Pacific (Sydney) - Databases, Tables, and Views, AWS - Asia Pacific (Tokyo) - Databases, Tables, and Views, AWS - US East (Ohio) - Databases, Tables, and Views, Azure - Australia East (New South Wales) - Databases, Tables, and Views, Databases, Tables, and Views
```

**7. Added: Update** (investigating) · 2026-09-14 04:48 UTC

```diff
+ Current status: We're investigating an issue with Snowflake Data Cloud. We'll provide an update within 1 hour. Customer experience: Customers in the affected regions may experience performance degradation or issues logging into Snowflake, including delayed sign-ins, query execution failures, and errors managing data. ETA: An ETA is not yet available. We'll provide one as soon as possible. In the meantime, we recommend that affected customers using replication initiate their failover procedures. Workaround: There are currently no available workarounds for this issue. Incident start time: 23:35 UTC September 13, 2026
```

**8. Added: Update** (identified) · 2026-09-14 05:18 UTC

```diff
+ Current status: We've identified the source of the issue, and we're developing and implementing a fix to restore service. We'll provide another update within 1 hour. Customer experience: Customers hosted in the affected deployments may experience performance degradation or issues logging into Snowflake, including delayed sign-ins, and SSO login loops. ETA: An ETA is not yet available. We'll provide one as soon as possible. In the meantime, we recommend that affected customers using replication initiate their failover procedures. Workaround: There are currently no available workarounds for this issue. Incident start time: 23:35 UTC September 13, 2026
```

**9. Added: Update** (monitoring) · 2026-09-14 05:40 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 affected deployments may have experienced performance degradation or issues logging into Snowflake, including delayed sign-ins, and SSO login loops. Incident start time: 23:35 UTC September 13, 2026 Incident end time: 05:18 UTC September 14, 2026 Preliminary root cause: An update intended to improve authentication handling caused a subset of single sign-on (SSO) sign-in attempts across multiple regions to fail or loop, preventing affected users from logging in to Snowflake.
```

**10. Added: Update** (resolved) · 2026-09-14 06:09 UTC

```diff
+ Current status: We've implemented the fix for this issue and monitored the environment to confirm that service was restored. 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 affected deployments may have experienced performance degradation or issues logging into Snowflake, including delayed sign-ins, and SSO login loops. Incident start time: 22:22 UTC September 13, 2026 Incident end time: 05:18 UTC September 14, 2026 Preliminary root cause: An update intended to improve authentication handling caused a subset of single sign-on (SSO) sign-in attempts across multiple regions to fail or loop, preventing affected users from logging in to Snowflake. A root cause analysis (RCA) will be conducted and a summary will be made available within 5 business days.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-09-14 04:48 UTC | Major incident: INC20000217 (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/ib458f1489b1c9b · Markdown: https://rewindex.com/change/ib458f1489b1c9b.md · JSON: https://rewindex.com/api/v1/changes/ib458f1489b1c9b · Generated 2026-10-18T01:54:26.324Z