# Linear: Critical incident: EU sync failure

**Summary:** Linear reported a critical EU sync outage starting 2026-09-27 00:55 UTC; the incident record lasted 4 days 16 h, closing 2026-10-01 17:50 UTC. Linear identified a faulty deployment; a restart restored access and offline syncing by 09-27 11:15 UTC. Linear said user impact ended then and later published a post-mortem. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-09-27 00:55 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://linearstatus.com/incidents/01M3H84RKQSXA19XQ0ZGN1DBZ6](https://linearstatus.com/incidents/01M3H84RKQSXA19XQ0ZGN1DBZ6)
- [Company: Linear](https://rewindex.com/company/linear.md)
- Versions: before (none: first archived) → after incident\_version:104/01M3H84RKQSXA19XQ0ZGN1DBZ6@e3957b82eb8f
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ EU sync failure
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-09-27 00:55 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-01 17:50 UTC
```

**6. Added: Update** (investigating) · 2026-09-27 10:56 UTC

```diff
+ We are investigating an outage with our EU server. We'll post updates here as soon as possible.
```

**7. Added: Update** (monitoring) · 2026-09-27 11:15 UTC

```diff
+ We've identified a faulty deployment and a restart has reenabled connections. EU users should be able to access Linear now and changes offline should now be synced. Please reach out to support@linear.app if you are experiencing issues. Given the scope and impact of the incident, we will follow up with a detailed post-mortem.
```

**8. Added: Update** (resolved) · 2026-09-27 12:02 UTC

```diff
+ The issues affecting EU Linear users from 00:55 to 11:15 UTC today have been resolved and changes made offline should now be synced. Please reach out to support@linear.app: mailto:support@linear.app if you are experiencing issues. We apologize for the downtime and are continuing to implement changes to improve our resilience in the future.
```

**9. Added: Update** (resolved) · 2026-10-01 17:50 UTC

```diff
+ We've published a post mortem with details on this incident including a timeline of events and prevention steps for the future: https://linear.app/docs/eu-sync-outage
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-09-27 00:55 UTC | Critical incident: EU sync failure (this change) | outage |

All Linear changes: [timeline](https://rewindex.com/company/linear/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/i5bf097aaaf8605 · Markdown: https://rewindex.com/change/i5bf097aaaf8605.md · JSON: https://rewindex.com/api/v1/changes/i5bf097aaaf8605 · Generated 2026-10-18T03:22:19.402Z