# Expo: Major incident: EAS Outage

**Summary:** Expo reported a major EAS Build, EAS Submit and EAS Workflows outage affecting iOS build and submission jobs and macOS CI/CD workflows, caused by a macOS data center networking outage. It started 2026-05-31 20:38 UTC and was resolved 2026-06-01 03:47 UTC, lasting 7 h 8 min. Network recovery restored services; paid jobs cleared, but free jobs remained backlogged. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-05-31 20:38 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/n054rjrmwsjs](https://stspg.io/n054rjrmwsjs)
- [Company: Expo](https://rewindex.com/company/expo.md)
- Versions: before (none: first archived) → after incident\_version:185/yw940lp7lm1z@23fb510e58c0
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ EAS Outage
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-05-31 20:38 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-06-01 03:47 UTC
```

**6. Added: Affected components**

```diff
+ EAS Build, EAS Submit, EAS Workflows, Expo Application Services - EAS Build, Expo Application Services - EAS Submit, Expo Application Services - EAS Workflows
```

**7. Added: Update** (identified) · 2026-05-31 20:38 UTC

```diff
+ There is a networking outage in our macOS data center. We are waiting for a fix on their end.
```

**8. Added: Update** (identified) · 2026-05-31 23:43 UTC

```diff
+ There is a networking outage affecting our macOS data center provider. They are working in coordination with their upstream providers to resolve the issue. We will be ready to work immediately on restoring availability once the data center provider is back online.
```

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

```diff
+ Our data center provider is still working on the issue. We noticed one of our racks became reachable again and started processing jobs successfully but that rack is now offline again. We are monitoring the servers’ network and status updates from the data center and are ready to work on restoring availability of iOS build jobs and macOS workflows when we get confirmation the data center is healthy again. Thank you for your understanding.
```

**10. Added: Update** (monitoring) · 2026-06-01 01:37 UTC

```diff
+ The data center’s network has partially recovered and the availability of the affected services (iOS build and submission jobs and macOS CI jobs) is back. We are monitoring service health. The backlog of affected jobs is being processed as fast as possible - specifically, compared to before this incident about twice as many jobs are running. Thank you for your patience and understanding.
```

**11. Added: Update** (monitoring) · 2026-06-01 03:46 UTC

```diff
+ Our data center confirmed the network is fully operational and we are closing this incident after confirming EAS iOS build and submission jobs and macOS CI/CD workflow jobs are running as normal. All paid customer jobs have been processed and new paid, high-priority jobs will run with approximately zero queue time. There is a backlog of free jobs we estimate will take approximately 40 minutes to process. Thank you again for your understanding and patience. Building developer trust is our guiding principle at Expo and we work continuously at this. We will internally discuss how to make an incident like this one go more smoothly if were to happen again.
```

**12. Added: Update** (resolved) · 2026-06-01 03:47 UTC

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

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-05-31 20:38 UTC | Major incident: EAS Outage (this change) | outage |

All Expo changes: [timeline](https://rewindex.com/company/expo/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/i1728cdb6d06bde · Markdown: https://rewindex.com/change/i1728cdb6d06bde.md · JSON: https://rewindex.com/api/v1/changes/i1728cdb6d06bde · Generated 2026-10-18T01:53:40.899Z