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Outage in Circle CI

Delays starting Docker jobs

Resolved Major
June 23, 2026 - Started 24 days ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

CircleCI experienced a ~1.4-hour incident where Docker jobs were stuck in a "preparing environment" state instead of starting normally, causing significant queue buildup and elevated wait times for affected customers. Engineers identified the cause, deployed a fix, and observed the job backlog clearing. The incident was fully resolved, with Docker job startup times returning to normal.

We are investigating reports of delays starting Docker jobs.
Components affected
Circle CI Docker Jobs

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Latest Updates ( sorted recent to last )
RESOLVED 24 days ago - at 06/23/2026 07:58PM

The issue where customers running Docker jobs experienced significant delays, with jobs stuck in a "preparing environment" state, has now been resolved. We thank you for your patience while our team worked on implementing a fix.

MONITORING 24 days ago - at 06/23/2026 07:29PM

What's happening
Our engineers have deployed a fix and we are observing the job backlog clearing. Docker jobs are now starting normally.

What's impacted
Customers who submitted Docker jobs during the incident window may still see some jobs completing with elevated queue times. Newly submitted jobs should be starting at normal times.

What can you expect
Docker job startup times are returning to normal. Thank you for your patience while our engineers resolved this issue.

We are monitoring the recovery and will provide a further update if the situation changes.

IDENTIFIED 24 days ago - at 06/23/2026 07:04PM

What's impacted
Customers running Docker jobs. Affected jobs are queuing rather than starting, resulting in elevated wait times.

What can you expect
Docker jobs may remain stuck in "preparing environment" for an extended period. Our engineers have identified the cause and are actively working to restore normal job startup times. Thank you for your patience while our team deploys a fix.

Next update
We will provide another update as soon as more information is available

IDENTIFIED 24 days ago - at 06/23/2026 06:42PM

We are deploying a change to mitigate this issue.

INVESTIGATING 24 days ago - at 06/23/2026 06:34PM

We are investigating reports of delays starting Docker jobs.

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