# Statsig: Major incident: Elevated 5xx rate in EU Regions

**Summary:** Statsig reported a major incident with elevated 5xx rates in EU regions, primarily affecting SDK initialization on Config Delivery API - Europe West 1 and Europe West 1. It started at 2025-09-02 18:44 UTC and was resolved at 2025-09-02 19:34 UTC, lasting 50 min; no cause or specific fix was stated. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2025-09-02 18:44 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/b5983w5n5jcb](https://stspg.io/b5983w5n5jcb)
- [Company: Statsig](https://rewindex.com/company/statsig.md)
- Versions: before (none: first archived) → after incident\_version:208/w4tdmldsgqwq@1327d144b599
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Elevated 5xx rate in EU Regions
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-09-02 18:44 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-09-02 19:34 UTC
```

**6. Added: Affected components**

```diff
+ Config Delivery API - Europe West 1, Europe West 1
```

**7. Added: Update** (investigating) · 2025-09-02 18:44 UTC

```diff
+ The team identified elevated 5xx rates in our EU regions starting at around 11:44AM PST, this primarily impacting SDK initialization. The issue was fully resolved by approximately 12:34 PM PST. Mitigated: 09/02/2025 12:34:00 GMT-0700 (Pacific Daylight Time)
```

**8. Added: Update** (resolved) · 2025-09-02 19:34 UTC

```diff
+ Resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-09-02 18:44 UTC | Major incident: Elevated 5xx rate in EU Regions (this change) | outage |

All Statsig changes: [timeline](https://rewindex.com/company/statsig/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/i00c9646ce8a5c5 · Markdown: https://rewindex.com/change/i00c9646ce8a5c5.md · JSON: https://rewindex.com/api/v1/changes/i00c9646ce8a5c5 · Generated 2026-10-18T02:55:05.543Z