# Trello in September 2021: incidents, uptime and changes

> Trello in September 2021: 6 incidents on its status page (4 major or critical), 98.35% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Trello’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/trello/2021/09
Last updated: 2021-10-01T00:00:00Z

- Incidents posted: 6 (major/critical: 4) · Maintenance: 0
- By vendor impact label: major 4, minor 2
- Uptime (vendor-reported): 98.35% free of major/critical incidents, 97.50% free of any incident; outage time 11 h 51 min, incident time 17 h 57 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [August 2021](https://rewindex.com/company/trello/2021/08.md) · Next: [October 2021](https://rewindex.com/company/trello/2021/10.md) · [All months](https://rewindex.com/company/trello/reports.md) · [Trello](https://rewindex.com/company/trello.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 |
| --- | --- | --- | --- | --- | --- |
| [Trello is slow or unavailable](https://rewindex.com/company/trello/incidents/n2lx8yqhpqx9.md) | major | 2021-09-20 13:14 UTC | 2021-09-20 17:12 UTC | 4.0 h | resolved |
| [Trello is slow or unavailable](https://rewindex.com/company/trello/incidents/sfymn2210y96.md) | major | 2021-09-21 15:05 UTC | 2021-09-21 21:33 UTC | 6.5 h | resolved |
| [Signup failures for Trello](https://rewindex.com/company/trello/incidents/twrbnmxnnh2h.md) | major | 2021-09-22 19:31 UTC | 2021-09-22 20:01 UTC | 30 min | resolved |
| [Trello is slow or unavailable](https://rewindex.com/company/trello/incidents/st24sfwy88zx.md) | major | 2021-09-27 08:04 UTC | 2021-09-27 08:59 UTC | 55 min | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Outlook users not receiving emails from Jira products](https://rewindex.com/company/trello/incidents/ywnsg7d8f0ch.md) | minor | 2021-09-15 22:13 UTC | 2021-09-16 03:08 UTC | 4.9 h | resolved |
| [Trello is slow or unavailable](https://rewindex.com/company/trello/incidents/n2lx8yqhpqx9.md) | major | 2021-09-20 13:14 UTC | 2021-09-20 17:12 UTC | 4.0 h | resolved |
| [Trello is slow or unavailable](https://rewindex.com/company/trello/incidents/sfymn2210y96.md) | major | 2021-09-21 15:05 UTC | 2021-09-21 21:33 UTC | 6.5 h | resolved |
| [Signup failures for Trello](https://rewindex.com/company/trello/incidents/twrbnmxnnh2h.md) | major | 2021-09-22 19:31 UTC | 2021-09-22 20:01 UTC | 30 min | resolved |
| [Trello is slow or unavailable](https://rewindex.com/company/trello/incidents/st24sfwy88zx.md) | major | 2021-09-27 08:04 UTC | 2021-09-27 08:59 UTC | 55 min | resolved |
| [Trello is slow or unavailable for some users](https://rewindex.com/company/trello/incidents/chv2tkcbmd46.md) | minor | 2021-09-28 18:36 UTC | 2021-09-28 19:47 UTC | 1.2 h | resolved |

## Cite this

Trello posted 6 status incidents in September 2021 (4 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/trello/2021/09
- Citation: Trello, “Trello in September 2021” (2021-09-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/trello/2021/09 (CC BY 4.0).
- Markdown link: `[Trello: Trello in September 2021 (2021-09-01)](https://rewindex.com/company/trello/2021/09)`


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Canonical: https://rewindex.com/company/trello/2021/09 · Markdown: https://rewindex.com/company/trello/2021/09.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T13:51:45.562Z