# Amplitude: Major incident: Experiment Creation Unavailable

**Summary:** Amplitude reported a major outage preventing new experiment creation, recorded as starting 2026-03-25 18:00 UTC, though its update reported impact since 17:09 UTC. Resolved at 2026-03-25 18:09 UTC; computed duration: 8 min. Existing experiments and other Experiment functionality were unaffected; no data loss was expected and no customer action was needed. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-03-25 18:00 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/wztqb5ktl81b](https://stspg.io/wztqb5ktl81b)
- [Company: Amplitude](https://rewindex.com/company/amplitude.md)
- Versions: before (none: first archived) → after incident\_version:49/g7sn59gk4m0b@a20e97cd13fe
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Experiment Creation Unavailable
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-03-25 18:00 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-03-25 18:09 UTC
```

**6. Added: Affected components**

```diff
+ Experiment - Flag Configurations API, Flag Configurations API
```

**7. Added: Update** (investigating) · 2026-03-25 18:00 UTC

```diff
+ Components Affected: Experiments Message: Since 2026-03-25 10:09 AM PT (17:09 UTC), users have been unable to create new experiments in Amplitude Experiment. Existing experiments and other Experiment functionality are not affected. Our team has identified the source of the issue and is actively working to deploy a fix. We expect no data loss. No customer action is needed at this time. We will provide the next update by 12:00 PM PT (19:00 UTC).
```

**8. Added: Update** (resolved) · 2026-03-25 18:09 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-03-25 18:00 UTC | Major incident: Experiment Creation Unavailable (this change) | outage |

All Amplitude changes: [timeline](https://rewindex.com/company/amplitude/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._


---
Canonical: https://rewindex.com/change/icefaf1772257d7 · Markdown: https://rewindex.com/change/icefaf1772257d7.md · JSON: https://rewindex.com/api/v1/changes/icefaf1772257d7 · Generated 2026-10-18T01:54:02.427Z