# Mattermost: Major incident: Unable to create new workspaces

**Summary:** Mattermost reported a major outage preventing new workspace creation, affecting Cloud Sign-Up, Cloud Workspaces and Sign-Up, citing a cloud-provider outage in us-east-1. It started at 2021-12-07 16:37 UTC and was resolved at 2021-12-07 22:45 UTC, lasting 6 h 7 min; all systems were reported operational. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2021-12-07 16:37 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/2whgw82ztl57](https://stspg.io/2whgw82ztl57)
- [Company: Mattermost](https://rewindex.com/company/mattermost.md)
- Versions: before (none: first archived) → after incident\_version:106/6srzz96x49sw@d30a735961da
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Unable to create new workspaces
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2021-12-07 16:37 UTC
```

**5. Added: Resolved time**

```diff
+ 2021-12-07 22:45 UTC
```

**6. Added: Affected components**

```diff
+ Cloud Sign-Up, Cloud Workspaces, Sign-Up
```

**7. Added: Update** (monitoring) · 2021-12-07 16:37 UTC

```diff
+ There is an outage in the cloud provider in us-east-1
```

**8. Added: Update** (monitoring) · 2021-12-07 17:44 UTC

```diff
+ We are continuing to monitor for any further issues.
```

**9. Added: Update** (monitoring) · 2021-12-07 20:06 UTC

```diff
+ All the systems are operational. We are continuing to monitor for any further issues by the cloud provider.
```

**10. Added: Update** (resolved) · 2021-12-07 22:45 UTC

```diff
+ All the systems are operational
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2021-12-07 16:37 UTC | Major incident: Unable to create new workspaces (this change) | outage |

All Mattermost changes: [timeline](https://rewindex.com/company/mattermost/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/ib98f1d15d9f1e9 · Markdown: https://rewindex.com/change/ib98f1d15d9f1e9.md · JSON: https://rewindex.com/api/v1/changes/ib98f1d15d9f1e9 · Generated 2026-10-18T02:55:25.806Z