# Census: Critical incident: App failing to load

**Summary:** Census reported a critical outage affecting the Census Sync Management UI from 2026-09-09 16:41 UTC to 2026-09-09 17:33 UTC (52 min). A backend change prevented Activation workspaces from loading; rolling it back restored access. Only UI components were impacted; sync runs were unaffected. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-09-09 16:41 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/397zpsgy41jj](https://stspg.io/397zpsgy41jj)
- [Company: Census](https://rewindex.com/company/census.md)
- Versions: before (none: first archived) → after incident\_version:136/mxs8hy5d9jx1@3f50a9a263b3
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ App failing to load
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-09-09 16:41 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-09-09 17:33 UTC
```

**6. Added: Affected components**

```diff
+ Census Sync Management UI
```

**7. Added: Update** (investigating) · 2026-09-09 16:41 UTC

```diff
+ We are currently investigating the issue where the app is failing to load.
```

**8. Added: Update** (identified) · 2026-09-09 16:47 UTC

```diff
+ The issue has been identified and the engineering team is working on safely rolling back the change.
```

**9. Added: Update** (identified) · 2026-09-09 17:07 UTC

```diff
+ We are continuing to work on a fix for this issue.
```

**10. Added: Update** (monitoring) · 2026-09-09 17:10 UTC

```diff
+ The change has been rolled back and the app is now loading.
```

**11. Added: Update** (resolved) · 2026-09-09 17:33 UTC

```diff
+ A backend change caused Activation workspaces to fail to load. We rolled back the change which allowed the app to load successfully. Only UI components were impacted, sync runs were unaffected.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-09-09 16:41 UTC | Critical incident: App failing to load (this change) | outage |

All Census changes: [timeline](https://rewindex.com/company/census/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/i5a9a7f29ab600c · Markdown: https://rewindex.com/change/i5a9a7f29ab600c.md · JSON: https://rewindex.com/api/v1/changes/i5a9a7f29ab600c · Generated 2026-10-18T02:29:51.814Z