# Ably: Major incident: Elevated Attach Error Rate in eu-west-1

**Summary:** Ably reported a major incident involving elevated attachment errors in eu-west-1, affecting Ably Pub/Sub - Europe (Ireland) and Europe (Ireland). It started at 2026-02-14 05:57 UTC and lasted 8 min, resolving at 2026-02-14 06:05 UTC; Ably implemented a fix but did not state a cause. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-02-14 05:57 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/dnt6hh9lqnkt](https://stspg.io/dnt6hh9lqnkt)
- [Company: Ably](https://rewindex.com/company/ably.md)
- Versions: before (none: first archived) → after incident\_version:173/x52r19qhlgzh@7f7f0e687b99
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Elevated Attach Error Rate in eu-west-1
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-02-14 05:57 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-02-14 06:05 UTC
```

**6. Added: Affected components**

```diff
+ Ably Pub/Sub - Europe (Ireland), Europe (Ireland)
```

**7. Added: Update** (investigating) · 2026-02-14 05:57 UTC

```diff
+ We're experiencing an elevated level of attachment errors in eu-west-1 and are currently looking into the issue.
```

**8. Added: Update** (identified) · 2026-02-14 06:00 UTC

```diff
+ The issue has been identified and a fix is being implemented.
```

**9. Added: Update** (monitoring) · 2026-02-14 06:01 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**10. Added: Update** (resolved) · 2026-02-14 06:05 UTC

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

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-02-14 05:57 UTC | Major incident: Elevated Attach Error Rate in eu-west-1 (this change) | outage |

All Ably changes: [timeline](https://rewindex.com/company/ably/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/i3e66dbf947e231 · Markdown: https://rewindex.com/change/i3e66dbf947e231.md · JSON: https://rewindex.com/api/v1/changes/i3e66dbf947e231 · Generated 2026-10-18T01:30:11.052Z