# LaunchDarkly: Major incident: Investigating Issues with LaunchDarkly Application and Authentication

**Summary:** LaunchDarkly reported a major outage affecting some customers’ web app access and authentication from 2026-02-26 15:43 UTC to 2026-02-26 17:06 UTC (1 h 22 min). Some customers also saw low flag-evaluation error counts, but the Flag Delivery Network was generally functional. A fix was implemented, and performance remained stable following mitigation. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-02-26 15:43 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/zmd22yr1ym0g](https://stspg.io/zmd22yr1ym0g)
- [Company: LaunchDarkly](https://rewindex.com/company/launchdarkly.md)
- Versions: before (none: first archived) → after incident\_version:195/klxzgdpmrncp@a3a25610d95d
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Investigating Issues with LaunchDarkly Application and Authentication
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-02-26 15:43 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-02-26 17:06 UTC
```

**6. Added: Affected components**

```diff
+ Authentication, Global (core functionality) - Authentication, Global (core functionality) - Web app (app.launchdarkly.com), Web app (app.launchdarkly.com)
```

**7. Added: Update** (investigating) · 2026-02-26 15:43 UTC

```diff
+ Some customers are experiencing issues with accessing the web app and authentication. We are investigating and will provide updates as they become available.
```

**8. Added: Update** (identified) · 2026-02-26 16:17 UTC

```diff
+ Some customers are experiencing issues with accessing the web app and authentication. Some customers may see a low number of errors with flag evaluation, as well, but generally our Flag Delivery Network is functional. We have identified the issue and are continuing our work to resolve it.
```

**9. Added: Update** (monitoring) · 2026-02-26 16:42 UTC

```diff
+ The issue with our application and authentication has been identified and a fix has been implemented. We are continuing to monitor the performance of impacted services. We will continue to update this page until it is resolved.
```

**10. Added: Update** (monitoring) · 2026-02-26 17:04 UTC

```diff
+ The issue with our application and authentication has been resolved. Performance has remained stable following mitigation.
```

**11. Added: Update** (resolved) · 2026-02-26 17:06 UTC

```diff
+ The issue with our application and authentication has been resolved. Performance has remained stable following mitigation.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-02-26 15:43 UTC | Major incident: Investigating Issues with LaunchDarkly Application and Authentication (this change) | outage |

All LaunchDarkly changes: [timeline](https://rewindex.com/company/launchdarkly/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/ibbae1ba231a90d · Markdown: https://rewindex.com/change/ibbae1ba231a90d.md · JSON: https://rewindex.com/api/v1/changes/ibbae1ba231a90d · Generated 2026-10-18T02:28:33.552Z