# CircleCI in December 2021: incidents, uptime and changes

> CircleCI in December 2021: 8 incidents on its status page (2 major or critical), 99.92% free of major or critical incidents (vendor-reported). From Rewindex’s archive of CircleCI’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/circleci/2021/12
Last updated: 2022-01-01T00:00:00Z

- Incidents posted: 8 (major/critical: 2) · Maintenance: 1
- By vendor impact label: critical 1, major 1, minor 5, none 1
- Uptime (vendor-reported): 99.92% free of major/critical incidents, 97.92% free of any incident; outage time 33 min, incident time 15 h 27 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [November 2021](https://rewindex.com/company/circleci/2021/11.md) · Next: [January 2022](https://rewindex.com/company/circleci/2022/01.md) · [All months](https://rewindex.com/company/circleci/reports.md) · [CircleCI](https://rewindex.com/company/circleci.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## Major and critical incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [All jobs are failing](https://rewindex.com/company/circleci/incidents/13k8hlwnzf0v.md) | critical | 2021-12-16 20:54 UTC | 2021-12-16 21:20 UTC | 26 min | resolved |
| [Workflows not running](https://rewindex.com/company/circleci/incidents/lkmtzpyvtmf1.md) | major | 2021-12-14 12:40 UTC | 2021-12-14 12:47 UTC | 7 min | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Machine jobs failing and Docker jobs delayed](https://rewindex.com/company/circleci/incidents/gxwl9bnh07vk.md) | minor | 2021-12-07 15:53 UTC | 2021-12-08 02:38 UTC | 11 h | resolved |
| [UI unavailable and workflows stuck](https://rewindex.com/company/circleci/incidents/bf31fbp88bgq.md) | minor | 2021-12-09 11:13 UTC | 2021-12-09 11:49 UTC | 36 min | resolved |
| [Workflows not running](https://rewindex.com/company/circleci/incidents/lkmtzpyvtmf1.md) | major | 2021-12-14 12:40 UTC | 2021-12-14 12:47 UTC | 7 min | resolved |
| [Insights are Not Loading](https://rewindex.com/company/circleci/incidents/z8h9ws6yl0jw.md) | minor | 2021-12-15 23:52 UTC | 2021-12-16 00:52 UTC | 1.0 h | resolved |
| [Increased Run Queue Time](https://rewindex.com/company/circleci/incidents/bqrhbvv4dhrj.md) | none | 2021-12-16 19:29 UTC | 2021-12-16 20:12 UTC | 43 min | resolved |
| [All jobs are failing](https://rewindex.com/company/circleci/incidents/13k8hlwnzf0v.md) | critical | 2021-12-16 20:54 UTC | 2021-12-16 21:20 UTC | 26 min | resolved |
| [Builds failing due to Docker Hub Registry outage](https://rewindex.com/company/circleci/incidents/pttnnhvsm12v.md) | minor | 2021-12-20 22:48 UTC | 2021-12-20 23:59 UTC | 1.2 h | resolved |
| [AWS EC2 incident affecting CircleCI](https://rewindex.com/company/circleci/incidents/7lxt37skvtdd.md) | minor | 2021-12-22 13:00 UTC | 2021-12-22 14:22 UTC | 1.4 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] Emergency Maintenance: Infrastructure](https://rewindex.com/company/circleci/incidents/1pq4yr04pkbp.md) | maintenance | 2021-12-17 03:00 UTC | 2021-12-17 03:56 UTC | 56 min | resolved |

## Cite this

CircleCI posted 8 status incidents in December 2021 (2 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/circleci/2021/12
- Citation: CircleCI, “CircleCI in December 2021” (2021-12-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/circleci/2021/12 (CC BY 4.0).
- Markdown link: `[CircleCI: CircleCI in December 2021 (2021-12-01)](https://rewindex.com/company/circleci/2021/12)`


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Canonical: https://rewindex.com/company/circleci/2021/12 · Markdown: https://rewindex.com/company/circleci/2021/12.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T13:54:33.055Z