# ChatGPT: Major incident: Widespread feature degradation

**Summary:** ChatGPT reported major widespread feature degradation, including login and signup issues in its iOS/Android apps, starting 2026-10-15 14:30 UTC and lasting 4 h 26 min. A mitigation was applied, and all impacted services had fully recovered by 2026-10-15 18:56 UTC; no cause was stated. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-10-15 14:30 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://status.openai.com/incidents/01M506BA4XRSWH7THR53HQGN3Z](https://status.openai.com/incidents/01M506BA4XRSWH7THR53HQGN3Z)
- [Company: ChatGPT](https://rewindex.com/company/chatgpt.md)
- Versions: before (none: first archived) → after incident\_version:5/01M506BA4XRSWH7THR53HQGN3Z@8a24d3e4ad69
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Widespread feature degradation
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-15 14:30 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-15 18:56 UTC
```

**6. Added: Update** (investigating) · 2026-10-15 16:29 UTC

```diff
+ We are investigating an issue affecting logins and signups across all ChatGPT mobile applications. We will provide updates as we learn more.
```

**7. Added: Update** (investigating) · 2026-10-15 16:35 UTC

```diff
+ We are investigating widespread feature degradation, including issues affecting logins and signups in the ChatGPT iOS/Android apps. We will provide updates as we learn more.
```

**8. Added: Update** (monitoring) · 2026-10-15 17:13 UTC

```diff
+ We have applied the mitigation and are monitoring the recovery.
```

**9. Added: Update** (resolved) · 2026-10-15 18:56 UTC

```diff
+ All impacted services have now fully recovered.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-15 14:30 UTC | Major incident: Widespread feature degradation (this change) | outage |

All ChatGPT changes: [timeline](https://rewindex.com/company/chatgpt/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/i6dea7778ffb660 · Markdown: https://rewindex.com/change/i6dea7778ffb660.md · JSON: https://rewindex.com/api/v1/changes/i6dea7778ffb660 · Generated 2026-10-18T00:38:03.782Z