# GitLab: Major incident: Elevated Errors Affecting AI Gateway Health Checks

**Summary:** _summary pending_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-07-14 22:47 UTC · Detected: 2026-10-18 05:08 UTC
- [Source: https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a56bc6e739a5205aaf5c15e](https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a56bc6e739a5205aaf5c15e)
- [Company: GitLab](https://rewindex.com/company/gitlab.md)
- Versions: before (none: first archived) → after incident\_version:188/6a56bc6e739a5205aaf5c15e@f34f8e4003e2
- Change 1 of 1 for this incident

Incident page (full timeline): [Elevated Errors Affecting AI Gateway Health Checks](https://rewindex.com/company/gitlab/incidents/6a56bc6e739a5205aaf5c15e.md)
## What changed

**1. Added: Title**

```diff
+ Elevated Errors Affecting AI Gateway Health Checks
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-07-14 22:47 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-07-15 00:47 UTC
```

**6. Added: Affected components**

```diff
+ GitLab Duo
```

**7. Added: Update** (investigating) · 2026-07-14 22:47 UTC

```diff
+ We're aware of elevated errors affecting AI Gateway health checks. We've identified a likely cause and are actively working on a fix. Details in: https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22519
```

**8. Added: Update** (identified) · 2026-07-14 23:02 UTC

```diff
+ We have identified the problematic change causing this behavior and are working to revert it. Details will be shared in: https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22519
```

**9. Added: Update** (identified) · 2026-07-14 23:37 UTC

```diff
+ We're continuing to work on reverting the change causing this issue. Details will be shared in: gitlab.com/gitlab-com/gl-infra/production/-/work_items/22519
```

**10. Added: Update** (identified) · 2026-07-15 00:00 UTC

```diff
+ The revert remains in progress. Additional updates will be shared in: https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22519
```

**11. Added: Update** (monitoring) · 2026-07-15 00:24 UTC

```diff
+ Deployment for the revert has reached production. Manual verification is successful with error rates trending down. We are continuing to monitor. Details: https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22519
```

**12. Added: Update** (monitoring) · 2026-07-15 00:37 UTC

```diff
+ We are monitoring the situation to ensure that services have returned to normal. Details: https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22519
```

**13. Added: Update** (resolved) · 2026-07-15 00:47 UTC

```diff
+ We are seeing error rates return to normal. This issue has been resolved. Details at https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22519
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-07-14 22:47 UTC | Major incident: Elevated Errors Affecting AI Gateway Health Checks (this change) | outage |

All GitLab changes: [timeline](https://rewindex.com/company/gitlab/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/i839d353e0a53e1 · Markdown: https://rewindex.com/change/i839d353e0a53e1.md · JSON: https://rewindex.com/api/v1/changes/i839d353e0a53e1 · Generated 2026-10-18T11:25:24.198Z