# CircleCI in May 2021: incidents, uptime and changes

> CircleCI in May 2021: 6 incidents on its status page (2 major or critical), 97.91% 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/2021/05
Last updated: 2021-06-01T00:00:00Z

- Incidents posted: 6 (major/critical: 2) · Maintenance: 0
- By vendor impact label: major 2, minor 3, none 1
- Uptime (vendor-reported): 97.91% free of major/critical incidents, 96.74% free of any incident; outage time 15 h 31 min, incident time 24 h 15 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [April 2021](https://rewindex.com/company/circleci/2021/04.md) · Next: [June 2021](https://rewindex.com/company/circleci/2021/06.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 |
| --- | --- | --- | --- | --- | --- |
| [Delays in starting Docker jobs. Machine executor and remote Docker environments are blocked](https://rewindex.com/company/circleci/incidents/qxkj1832wf9l.md) | major | 2021-05-21 13:30 UTC | 2021-05-22 01:18 UTC | 12 h | resolved |
| [Jobs queuing and slow UI loading](https://rewindex.com/company/circleci/incidents/4phwxjmdfs08.md) | major | 2021-05-31 08:56 UTC | 2021-05-31 12:39 UTC | 3.7 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Delayed start and/or not running macOS jobs](https://rewindex.com/company/circleci/incidents/kz9nrr3jqr75.md) | minor | 2021-05-05 16:50 UTC | 2021-05-05 20:19 UTC | 3.5 h | resolved |
| [Customers may experience a delay starting macOS jobs](https://rewindex.com/company/circleci/incidents/wr2g3zdc2h8r.md) | minor | 2021-05-10 16:37 UTC | 2021-05-10 20:19 UTC | 3.7 h | resolved |
| [Delays in starting Docker jobs. Machine executor and remote Docker environments are blocked](https://rewindex.com/company/circleci/incidents/qxkj1832wf9l.md) | major | 2021-05-21 13:30 UTC | 2021-05-22 01:18 UTC | 12 h | resolved |
| [Increased jobs run time](https://rewindex.com/company/circleci/incidents/vm75qmkms4bm.md) | minor | 2021-05-25 15:25 UTC | 2021-05-25 16:58 UTC | 1.6 h | resolved |
| [Workflows using orbs may have failed due to config compilation errors](https://rewindex.com/company/circleci/incidents/7mfmvvgqkcxf.md) | none | 2021-05-27 09:30 UTC | 2021-05-27 09:30 UTC | 0 min | resolved |
| [Jobs queuing and slow UI loading](https://rewindex.com/company/circleci/incidents/4phwxjmdfs08.md) | major | 2021-05-31 08:56 UTC | 2021-05-31 12:39 UTC | 3.7 h | resolved |

## Cite this

CircleCI posted 6 status incidents in May 2021 (2 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/circleci/2021/05
- Citation: CircleCI, “CircleCI in May 2021” (2021-05-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/circleci/2021/05 (CC BY 4.0).
- Markdown link: `[CircleCI: CircleCI in May 2021 (2021-05-01)](https://rewindex.com/company/circleci/2021/05)`


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Canonical: https://rewindex.com/company/circleci/2021/05 · Markdown: https://rewindex.com/company/circleci/2021/05.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T11:01:59.144Z