# Close: Critical incident: App UI unavailable

**Summary:** Close’s critical Application UI incident ran from 2025-01-06 17:49 UTC to 2025-01-06 19:47 UTC (1 h 58 min). The postmortem reports Web UI unavailability from 2025-01-06 17:33 UTC to 2025-01-06 17:48 UTC (15 minutes). Close cited a deployment-process change and said the issue was reverted. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2025-01-06 17:49 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/4jw8whcmwcsw](https://stspg.io/4jw8whcmwcsw)
- [Company: Close](https://rewindex.com/company/close.md)
- Versions: before (none: first archived) → after incident\_version:128/0ln1p71qsvgx@70ab6c0a6178
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ App UI unavailable
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ postmortem
```

**4. Added: Start time**

```diff
+ 2025-01-06 17:49 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-01-06 19:47 UTC
```

**6. Added: Affected components**

```diff
+ Application UI
```

**7. Added: Update** (investigating) · 2025-01-06 17:49 UTC

```diff
+ We are currently investigating the issue.
```

**8. Added: Update** (monitoring) · 2025-01-06 17:50 UTC

```diff
+ Issue was identified and reverted. Monitoring to confirm no further issues.
```

**9. Added: Update** (resolved) · 2025-01-06 19:47 UTC

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

**10. Added: Update** (postmortem) · 2025-01-09 07:48 UTC

```diff
+ Close sincerely apologizes for the interruption of our service. We take the stability of our platform very seriously. Below is an explanation of what happened and how we will prevent another such interruption from occurring. ## Impact The Close Web UI was unavailable for 15 minutes from 2025-01-06 17:33 to 2025-01-06 17:48. ## Root Cause and Resolution A change to our deployment process introduced a build where JavaScript file contents were updated without corresponding filename changes, leading to caching issues that caused outdated files to be served. We quickly rolled back to a previous build to restore services and then resolved the underlying issue by updating the affected assets. ## Timeline * 17:33 UTC - Deployment of the broken Close Web UI * 17:48 UTC - Restored prior version
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-01-06 17:49 UTC | Critical incident: App UI unavailable (this change) | outage |

All Close changes: [timeline](https://rewindex.com/company/close/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/ie716de1c725680 · Markdown: https://rewindex.com/change/ie716de1c725680.md · JSON: https://rewindex.com/api/v1/changes/ie716de1c725680 · Generated 2026-10-18T03:55:52.207Z