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Outage tracker

Trello: the full evidence record

The last 24 hours in detail, 15 days of measured availability, a 12-month summary, our own incident log, Trello's declared record, and how the two compare.

← Back to Trello's live status

We started measuring Trello on August 20, 2026, which is 15 days ago. Everything below covers that period, not the full 90 days a longer-tracked service would show.

The last 24 hours

What happened most recently, on one time axis: our own probe readings by surface, how many people reported a problem, and what Trello's own status page declared. Below it, any public chatter we saw about Trello and the extra probe it triggered.

The last 24 hours on one axis: what our probes read for each surface we check, how many people reported a problem, and what Trello's own status page declared. Three records side by side; none of them changes another.

Our probes, web
Unverified user reportsNo reports about Trello in the last 24 hours, which is not evidence that nothing is wrong.
Trello's status pageNo incident declared in the last 24 hours.

Each probe cell is the worst reading across every region in that quarter hour: one region that did not answer colours the cell, never an average. An amber cell is a reading that answered, but at three times or more its 7-day median for three checks running: slow is not down, and we say which. A filtered reading stays neutral, because a refused probe is not an outage. Report bars count unverified reports, not people we verified; they never change our reading. The status-page lane is Trello's own declaration, shown as they made it.

Third-party chatter, labeled

Public posts from the last hour that mention Trello next to an outage word (“down”, “outage”, “not working”). This is what other people said in public, collected by keyword: not something we measured, and not the user reports above. It never affects the verdict.

No matching public posts in the last hour from the sources we watch.

Availability by region

Availability is measured probes that succeeded, divided by every probe we attempted, per region. Not interpolated, not smoothed, and never computed for a region with zero recorded samples.

RegionAvailabilityProbes recorded
US-East99.84%633
US-West100.00%633
Europe100.00%630
Asia-Pacific100.00%617

Monthly summary

Tracking Trello since Aug 20, 2026. In that time our probes detected no outage. Months before that date are not tracked and carry no figure.

MonthUptimeOutagesDowntime
Oct 2025not tracked
Nov 2025not tracked
Dec 2025not tracked
Jan 2026not tracked
Feb 2026not tracked
Mar 2026not tracked
Apr 2026not tracked
May 2026not tracked
Jun 2026not tracked
Jul 2026not tracked
Aug 2026 from Aug 20, 2026100%00 min
Sep 2026100%00 min

Uptime here is the share of each month in which our probes had no outage open for Trello: two consecutive failed readings from a region opens one, the first clean reading closes it. Any detected outage counts, including one seen from a single region, and an outage that crosses midnight on the first of a month is counted in both months with its minutes split. User reports, public posts and Trello's own status page contribute nothing to these figures.

Our incident log

Every outage our own probes detected for Trello in the last 90 days, or since we started measuring it if that is more recent. This list is probe-only: Trello's own declared incidents appear further down this page in their own attributed section, never merged with what we measured here. User reports live on the live page, in their own labeled block.

No outages detected for Trello since we started measuring it on August 20, 2026. We show nothing from before that date.

Their declared record

Trello's own incident history, taken from their public status feed. This is their account of what happened, not our measurement, and it never changes the incident log above or the other way around.

Trello - degraded performanceMinor incident
May 17, 2026, 2:11 PM UTC to May 26, 2026, 9:12 PM UTC (9d 7h)postmortem published
their latest update (Jun 26, 2026, 7:42 PM UTC): # Summary On May 17th 2026 at 12:00 UTC a subset of Trello users experienced a degradation of some core functionality including but not limited to: issues with comments, viewing activity logs, accessing card details, board exports, Power-Ups, attachments, Home page updates, and …
Trello - degraded performance (resolved)Minor incident
May 15, 2026, 3:14 PM UTC to May 15, 2026, 6:04 PM UTC (2h 51m)resolved
their latest update (May 15, 2026, 6:04 PM UTC): Search is now fully up to date for all users, and all issues with previous degraded functionality have been resolved.
Users experiencing issues accessing multiple Atlassian productsMajor outage
May 14, 2026, 5:24 AM UTC to May 14, 2026, 6:48 AM UTC (1h 24m)postmortem published
their latest update (May 19, 2026, 7:10 PM UTC): ### Summary On May 14, 2026, between 04:30 and 05:26 UTC, Atlassian customers experienced widespread service disruption across multiple Atlassian Cloud products. The issue was caused by a race condition in our internal deployment orchestration platform during a routine rollback …
Multiple Atlassian services are experiencing issuesMinor incident
May 8, 2026, 1:31 AM UTC to May 8, 2026, 10:26 AM UTC (8h 55m)postmortem published
their latest update (May 20, 2026, 6:46 AM UTC): All dates and times below are in UTC unless stated otherwise. ### Summary On May 8, 2026 between 00:22 and 06:08, one of our hosting providers suffered a significant incident in a specific availability zone in prod-east which led to Atlassian customers experiencing degraded pe…
Trello Slow or down for usersPartial outage
Feb 21, 2026, 3:32 PM UTC to Feb 21, 2026, 3:32 PM UTC (0 min)resolved
their latest update (Feb 21, 2026, 3:32 PM UTC): Impact Trello users are experiencing issues with websocket connections, leading to difficulties in maintaining active sessions. Affected users may notice disruptions in service as connections are intermittently dropping. Current Status Efforts are underway to restore normal se…
Degraded performance of TrelloMinor incident
Feb 19, 2026, 3:06 PM UTC to Feb 19, 2026, 3:22 PM UTC (16 min)resolved
their latest update (Feb 19, 2026, 3:22 PM UTC): On February 19, 2026, Trello users may have experienced performance degradation. The issue has now been resolved, and the service is operating normally for all affected customers.
Trello performance is degradedAll systems operational
Feb 9, 2026, 8:20 AM UTC to Feb 9, 2026, 8:36 AM UTC (16 min)postmortem published
their latest update (Feb 18, 2026, 8:33 AM UTC): ### **Summary** On Feb 9, 2026, between 07:12 UTC and 08:05 UTC, Atlassian customers were unable to access Trello. The event was triggered by Trello servers reaching maximum memory limits and a subsequent failure to automatically scale for the traffic. The incident was detected …
Outbound Email, Mobile Push Notifications, and Support Ticket Delivery Impacting All Cloud ProductsMajor outage
Dec 27, 2025, 4:42 AM UTC to Dec 27, 2025, 5:20 AM UTC (38 min)postmortem published
their latest update (Jan 30, 2026, 4:09 AM UTC): ### Summary On **December 27, 2025**, between **02:48 UTC and 05:20 UTC**, some Atlassian cloud customers experienced failures in sending and receiving emails and mobile notifications. Core Jira and Confluence functionality remained available. The issue was triggered when **TLS…
500 Errors being experienced by Trello usersMajor outage
Dec 12, 2025, 6:40 AM UTC to Dec 12, 2025, 7:41 AM UTC (1h 2m)postmortem published
their latest update (Jan 6, 2026, 5:06 PM UTC): ### Summary On December 12, 2025, between 05:31 UTC and 07:11 UTC, Trello customers experienced errors or slow loading times due to a dependency library upgrade that caused high resource usage. The incident was detected within 1 minute by the automated monitoring system and miti…
Multiple Atlassian services experiencing degraded performancePartial outage
Nov 21, 2025, 2:55 PM UTC to Nov 21, 2025, 4:49 PM UTC (1h 54m)postmortem published
their latest update (Dec 8, 2025, 5:12 AM UTC): ### Summary On November 21, 2025, between 13:44 and 15:16 UTC, Trello customers were intermittently unable to view and update data on their boards. Customers also may have experienced issues authenticating with Atlassian products, and creating new GitHub and Slack integrations. …

Showing the 10 most recent of 50 incidents Trello has declared in the history we hold.

These entries are Trello's own declarations, taken from their public status feed, shown separately from the outages we detected ourselves. Their page publishes what they choose to publish: an incident missing here means they did not declare one, not that nothing happened, and an incident here is their account, not our measurement. Neither record ever changes the other.

The scorecard

How Trello's status page compared with what we measured, for every outage above that falls inside the window we have been capturing their claims.

We started recording Trello's own status page on August 20, 2026, 13 days ago. This comparison covers that period only, we do not reconstruct what they said before it, and we compare only inside outages we measured ourselves.

We have not measured an outage for Trello since we started recording their status page, so there is nothing to compare. That is a short measurement window, not a track record.

Trello decides what their status page covers, and it may report per component while our check reaches one surface from ten regions. We state what each side measured and leave the conclusion to you. If Trello believes a figure here is wrong, we publish corrections as prominently as the original.

Full detail on what a probe does and does not prove is in the methodology page.