# Amplitude: Major incident: Amplitude web application not loading

**Summary:** Amplitude’s US web application was inaccessible in a major incident attributed to a misconfigured feature flag. The recorded start is 2026-04-28 18:50 UTC, but resolution is listed earlier at 2026-04-28 17:00 UTC; computed duration is unknown, while the vendor reported 10 minutes of impact and confirmed resolution. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-04-28 18:50 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/mm5lvfwf01pk](https://stspg.io/mm5lvfwf01pk)
- [Company: Amplitude](https://rewindex.com/company/amplitude.md)
- Versions: before (none: first archived) → after incident\_version:49/c67zxzgy7myd@bf79bb2f982b
- Change 1 of 1 for this incident

Incident page (full timeline): [Amplitude web application not loading](https://rewindex.com/company/amplitude/incidents/c67zxzgy7myd.md)
## What changed

**1. Added: Title**

```diff
+ Amplitude web application not loading
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-04-28 18:50 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-04-28 17:00 UTC
```

**6. Added: Update** (resolved) · 2026-04-28 17:00 UTC

```diff
+ The Amplitude web application in the US was briefly inaccessible. We identified the issue to be related to a misconfigured feature flag. The issue started at 10:00 AM PST, lasting 10 minutes, and is now resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-04-28 18:50 UTC | Major incident: Amplitude web application not loading (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/i938848d948e6b1 · Markdown: https://rewindex.com/change/i938848d948e6b1.md · JSON: https://rewindex.com/api/v1/changes/i938848d948e6b1 · Generated 2026-10-19T02:03:35.628Z