# GitLab: Degraded performance affecting Duo features

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-05-15 15:37 UTC · Resolved: 2026-05-15 18:11 UTC · Duration: 2.6 h
- Updates: 6 · Affected components: GitLab Duo
- [Vendor status page: https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a073db1f120e805ff42a198](https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a073db1f120e805ff42a198)
- [Company: GitLab](https://rewindex.com/company/gitlab.md)

## Timeline of updates

- **investigating** 2026-05-15 15:37 UTC: We’re investigating an issue affecting GitLab Duo Agent Platform workflows across GitLab.com, and GitLab Dedicated. Some code review and custom flows may fail or show “Session failed.” More details at https://gitlab.com/gitlab-com/gl-infra/production/-/work\_items/22135
- **investigating** 2026-05-15 16:07 UTC: We’re continuing to investigate an issue affecting GitLab Duo Agent Platform workflows on GitLab.com and GitLab Dedicated. We have identified a likely cause and are testing a revert. More details at https://gitlab.com/gitlab-com/gl-infra/production/-/work\_items/22135
- **identified** 2026-05-15 16:32 UTC: We’ve identified the issue affecting GitLab Duo Agent Platform workflows across GitLab.com, and GitLab Dedicated. Some code review and custom flows may fail or show “Session failed.” We are working on a revert to correct the issue. More details at https://gitlab.com/gitlab-com/gl-infra/production/-/work\_items/22135
- **identified** 2026-05-15 17:05 UTC: We have identified the cause and have created an MR to revert. We are waiting for that MR to deploy. We will provide further updates once that has merged and deployed. More details at gitlab.com/gitlab-com/gl-infra/production/-/work\_items/22135
- **monitoring** 2026-05-15 17:44 UTC: The revert has been deployed and we are now monitoring the situation. Error rates look to be returning to normal. More details at gitlab.com/gitlab-com/gl-infra/production/-/work\_items/22135
- **resolved** 2026-05-15 18:11 UTC: The revert has been merged and deployed and we are seeing error rates return to normal and flows running. This issue has been resolved. More details at gitlab.com/gitlab-com/gl-infra/production/-/work\_items/22135

## Rewindex changes for this incident

- 2026-05-15 15:37 UTC: [Major incident: Degraded performance affecting Duo features](https://rewindex.com/change/i6ae76061ee0816.md)


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Canonical: https://rewindex.com/company/gitlab/incidents/6a073db1f120e805ff42a198 · Markdown: https://rewindex.com/company/gitlab/incidents/6a073db1f120e805ff42a198.md · JSON: https://rewindex.com/api/v1/companies/gitlab/incidents/6a073db1f120e805ff42a198 · Generated 2026-10-18T10:29:19.846Z