# Devin (Cognition): Major incident: Issue with sending Devin session responses

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2026-03-20 15:17 UTC · Detected: 2026-10-19 17:03 UTC
- [Source: https://stspg.io/zfl5ddzh60mq](https://stspg.io/zfl5ddzh60mq)
- [Company: Devin (Cognition)](https://rewindex.com/company/devin.md)
- Versions: before (none: first archived) → after incident\_version:676/v10wmjfd7n7l@2a494e0cb859
- Change 1 of 1 for this incident

Incident page (full timeline): [Issue with sending Devin session responses](https://rewindex.com/company/devin/incidents/v10wmjfd7n7l.md)
## What changed

**1. Added: Title**

```diff
+ Issue with sending Devin session responses
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-03-20 15:17 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-03-20 16:14 UTC
```

**6. Added: Affected components**

```diff
+ Agent, Cloud Agent
```

**7. Added: Update** (investigating) · 2026-03-20 15:17 UTC

```diff
+ We are currently experiencing an issue with sending follow up messages to existing Devin sessions. We are currently investigating the issue.
```

**8. Added: Update** (investigating) · 2026-03-20 15:17 UTC

```diff
+ We are continuing to investigate this issue.
```

**9. Added: Update** (investigating) · 2026-03-20 15:34 UTC

```diff
+ We are continuing to investigate the issue.
```

**10. Added: Update** (investigating) · 2026-03-20 15:55 UTC

```diff
+ We are continuing to investigate the issue.
```

**11. Added: Update** (investigating) · 2026-03-20 16:01 UTC

```diff
+ We have identified the root cause and are assessing a fix
```

**12. Added: Update** (investigating) · 2026-03-20 16:13 UTC

```diff
+ Fix has been applied and user sessions are confirmed working.
```

**13. Added: Update** (resolved) · 2026-03-20 16:14 UTC

```diff
+ This incident has been resolved, and affected components were actually web services and web server, not agent. Uptimes have been updated accordingly.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-03-20 15:17 UTC | Major incident: Issue with sending Devin session responses (this change) | major |

All Devin (Cognition) changes: [timeline](https://rewindex.com/company/devin/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/ia5ca14c8cbdd53 · Markdown: https://rewindex.com/change/ia5ca14c8cbdd53.md · JSON: https://rewindex.com/api/v1/changes/ia5ca14c8cbdd53 · Generated 2026-10-20T00:00:16.858Z