# RudderStack: Major incident: Control Plane & Activation API Disruption

**Summary:** RudderStack reported a major Control Plane and Activation API outage starting 2025-12-19 18:40 UTC, causing possible web app access errors; data-plane event ingestion was unaffected. An internal service outage affected dependent components, and RudderStack rolled out a fix. All services returned to normal at 2025-12-19 19:14 UTC, after 34 min. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2025-12-19 18:40 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/f5ttdwxpsy6n](https://stspg.io/f5ttdwxpsy6n)
- [Company: RudderStack](https://rewindex.com/company/rudderstack.md)
- Versions: before (none: first archived) → after incident\_version:161/f22fp4yyh0fs@4ec79ece35ad
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Control Plane & Activation API Disruption
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-12-19 18:40 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-12-19 19:14 UTC
```

**6. Added: Affected components**

```diff
+ Control Plane / Public API
```

**7. Added: Update** (investigating) · 2025-12-19 18:40 UTC

```diff
+ We are currently investigating this issue.
```

**8. Added: Update** (investigating) · 2025-12-19 18:51 UTC

```diff
+ We are investigating an issue causing an outage for a internal service, which is impacting several dependent components including the Control Plane and Activation API. Customers may experience errors accessing RudderStack web app or any other componets depending on it. Note: No impact on event ingestion on the data planes
```

**9. Added: Update** (identified) · 2025-12-19 18:53 UTC

```diff
+ We have identified the cause of the outage and rolling out a fix
```

**10. Added: Update** (monitoring) · 2025-12-19 18:53 UTC

```diff
+ We are seeing recovery of the services. We are continuing to monitor the system to ensure stability and confirm full restoration
```

**11. Added: Update** (resolved) · 2025-12-19 19:14 UTC

```diff
+ This incident has been resolved and all services are back to normal
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-12-19 18:40 UTC | Major incident: Control Plane & Activation API Disruption (this change) | outage |

All RudderStack changes: [timeline](https://rewindex.com/company/rudderstack/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/icdff727e0a4949 · Markdown: https://rewindex.com/change/icdff727e0a4949.md · JSON: https://rewindex.com/api/v1/changes/icdff727e0a4949 · Generated 2026-10-18T01:29:59.514Z