Circle CI Outage History

Circle CI is up right now

Circle CI had 65 outages in the last 2 years totaling 116h 25m of downtime — averaging 2.7 incidents per month.

There were 65 Circle CI outages since September 8, 2025 totaling 116h 25m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.circleci.com

Major November 19, 2025

CircleCI UI is inaccessible

Detected by Pingoru
Nov 19, 2025, 04:21 PM UTC
Resolved
Nov 19, 2025, 05:19 PM UTC
Duration
57m
Affected: CircleCI UI
Timeline · 4 updates
  1. investigating Nov 19, 2025, 04:21 PM UTC

    CircleCI UI is currently not loading. We are investigating, but jobs are running normally.

  2. monitoring Nov 19, 2025, 04:26 PM UTC

    We have applied a fix which has brought the UI back online. We are monitoring for further issues.

  3. monitoring Nov 19, 2025, 05:19 PM UTC

    This incident has been resolved. The CircleCI UI is not loading and operating normally for all customers. Thank you for your patience, and we apologize for any inconvenience this may have caused.

  4. resolved Nov 19, 2025, 05:19 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor November 17, 2025

Machine and Remote Docker jobs are delayed

Detected by Pingoru
Nov 17, 2025, 04:18 PM UTC
Resolved
Nov 17, 2025, 08:23 PM UTC
Duration
4h 4m
Affected: Machine Jobs
Timeline · 5 updates
  1. investigating Nov 17, 2025, 04:18 PM UTC

    We are investigating Machine and Remote Docker delays. We are working on resolving this as quickly as possible. All jobs will continue to run normally after the delay. Thank you for your patience.

  2. identified Nov 17, 2025, 05:00 PM UTC

    We have identified the cause of Machine and Remote Docker delays. We are making changes which we expect to reduce the delays. All jobs will continue to run normally after the delay, and we expect the delay will decrease with time. Thank you for your patience.

  3. identified Nov 17, 2025, 06:46 PM UTC

    We are actively adding additional capacity to reduce job start delays for Linux , AMD and Remote Docker resource classes. Current improvements show average wait times are now under one minute for most jobs, with some customers waiting up to 6 minutes for jobs using these resources. . Current Status: - Linux, AMD and Remote Docker jobs: Wait times improving as we expand capacity, delays up to 6 minutes - Docker, Mac, Windows, and Android jobs: Operating normally without delays Our team is continuing to deploy additional resources to fully eliminate the remaining delays. We expect continued improvement over the next hour as this expanded capacity comes online. We appreciate your patience as we optimize our infrastructure to meet current demand. Next Update: Within 30 minutes or when normal operation is restored.

  4. monitoring Nov 17, 2025, 07:51 PM UTC

    We continue to see reductions in average wait times for customers requesting Linux, AMD, and Remote Docker resource classes, with maximum delays now reduced to under 3 minutes. Current Status: - Linux, AMD and Remote Docker jobs: Wait times continue to improve, maximum delays of just under 3 minutes - Docker, Mac, Windows, and Android jobs: Operating normally without delays Additional capacity continues to come online, and we expect further improvements as our infrastructure scales to meet demand. Thank you for your patience as we work toward full resolution. Next Update: Within 30 minutes or when normal operation is restored.

  5. resolved Nov 17, 2025, 08:23 PM UTC

    This incident has been resolved. All resource classes including Linux, AMD, and Remote Docker are now operating normally with standard queue times. The additional capacity has been successfully deployed and job start delays have been eliminated. Thank you for your patience while our engineers worked through this issue.

Read the full incident report →

Minor November 12, 2025

Project creation is currently failing

Detected by Pingoru
Nov 12, 2025, 05:38 PM UTC
Resolved
Nov 12, 2025, 05:56 PM UTC
Duration
18m
Affected: CircleCI UI
Timeline · 2 updates
  1. identified Nov 12, 2025, 05:38 PM UTC

    There are currently issues creating and modifying projects using the Project Settings UI. We have identified the cause and are working on a remediation now. We appreciate your patience whilst we work to resolve an issue.

  2. resolved Nov 12, 2025, 05:56 PM UTC

    We have resolved the issue which prevented users from creating and modifying projects. Any attempts to create projects will need to be retried. Thank you for your patenience whilst we resolved it.

Read the full incident report →

Notice November 7, 2025

RAM Disk is currently not usable in Docker jobs

Detected by Pingoru
Nov 07, 2025, 10:40 AM UTC
Resolved
Nov 10, 2025, 11:24 AM UTC
Duration
3d
Affected: Docker Jobs
Timeline · 2 updates
  1. monitoring Nov 07, 2025, 10:40 AM UTC

    At present customers running Docker containers cannot use /mnt/ramdisk. Customers will need to modify their configuration to use the filesystem instead. This has occurred in order to update the Docker Infrastructure that supports our `working_directory: /mnt/ramdisk` feature. This is a necessary step in order to address CVE-2025-31133, CVE-2025-52565, and CVE-2025-52881. This bug affects any Docker jobs utilizing `working_directory: /mnt/ramdisk`. Jobs will fail on checkout and workspace attachments. The immediate workaround will be to remove any usage of `working_directory: /mnt/ramdisk` from your job which will require an update of `.circleci/config.yml` Once this maintenance is complete, customers will be unable to utilize `working_directory: /mnt/ramdisk`until further notice.

  2. resolved Nov 10, 2025, 11:24 AM UTC

    We have identified and applied a workaround for the RAM DIsk issue, which means customers can resume builds using `/mnt/ramdisk`. We appreciate your patience and understanding whilst we worked on resolving this whilst ensuring the security of our platform for all customers.

Read the full incident report →

Notice November 6, 2025

Docker jobs degradation

Detected by Pingoru
Nov 06, 2025, 07:26 PM UTC
Resolved
Nov 06, 2025, 07:26 PM UTC
Duration
—
Affected: Docker Jobs
Timeline · 1 update
  1. resolved Nov 06, 2025, 07:26 PM UTC

    Some customers from 15:26:06 UTC to 18:44:16 UTC would have experienced intermittent issues with running docker jobs. We have since rolled back this change.

Read the full incident report →

Minor November 5, 2025

Network Delays Affecting MacOS Jobs

Detected by Pingoru
Nov 05, 2025, 04:57 PM UTC
Resolved
Nov 05, 2025, 06:59 PM UTC
Duration
2h 1m
Affected: macOS Jobs
Timeline · 5 updates
  1. identified Nov 05, 2025, 04:57 PM UTC

    We are experiencing delays starting jobs for M1 and M4 medium and large resource classes. Running jobs on these resource classes will also experience delays due to degraded network performance.

  2. identified Nov 05, 2025, 05:30 PM UTC

    We are continuing to investigate this and are working with our datacenter provider to mitigate this issue.

  3. identified Nov 05, 2025, 06:06 PM UTC

    We are continuing to investigate degraded network performance affecting macOS resources in our infrastructure. What's happening: We have identified reduced network bandwidth that is causing performance degradation for specific macOS resource classes. What's impacted: M1 medium and large resources: Experiencing average wait times of up to 20 minutes before job start M4 Pro medium and large resources: Experiencing average wait times of approximately 5 minutes before job start Running jobs on affected resources: Network-dependent operations within jobs (cache restoration, pulling datasets, downloading dependencies) are also experiencing slowdowns. All other macOS resource classes are operating normally Next update: We are actively working to resolve this issue and will provide an update within 30 minutes or sooner if the situation changes.

  4. monitoring Nov 05, 2025, 06:41 PM UTC

    We are observing recovery of the macOS resources performance issue. Wait times for M1 medium/large and M4 Pro medium/large resources have returned to normal levels Network performance within running jobs appears to be recovering We are continuing to monitor the situation closely to ensure stability and will provide another update within 30 minutes as we confirm full resolution of the incident.

  5. resolved Nov 05, 2025, 06:59 PM UTC

    The macOS resources performance issue has been fully resolved. All M1 and M4 Pro medium/large resources are operating normally with standard wait times and network performance. We have monitored the infrastructure for stability and confirmed full recovery of all affected services. We apologize for any inconvenience this may have caused. Thank you for your patience during this incident.

Read the full incident report →

Major October 27, 2025

No Linux jobs are running

Detected by Pingoru
Oct 27, 2025, 03:04 PM UTC
Resolved
Oct 27, 2025, 03:24 PM UTC
Duration
20m
Affected: Machine Jobs
Timeline · 4 updates
  1. investigating Oct 27, 2025, 03:04 PM UTC

    There is an issue with Linux jobs not running and we are investigating.

  2. identified Oct 27, 2025, 03:10 PM UTC

    We have identified the issue, it has been mitigated and we are waiting for jobs to catch. No work was lost, just slight delays happened.

  3. monitoring Oct 27, 2025, 03:17 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Oct 27, 2025, 03:24 PM UTC

    This incident has been resolved. Thank you for your patience.

Read the full incident report →

Minor October 10, 2025

Delays starting Docker Jobs

Detected by Pingoru
Oct 10, 2025, 08:29 PM UTC
Resolved
Oct 10, 2025, 10:23 PM UTC
Duration
1h 53m
Affected: Docker Jobs
Timeline · 5 updates
  1. investigating Oct 10, 2025, 08:29 PM UTC

    Some customers may have experienced delays of around 5 minutes starting Docker Jobs.

  2. investigating Oct 10, 2025, 09:04 PM UTC

    We are continuing to investigate the issue. Thank you for your patience.

  3. identified Oct 10, 2025, 09:30 PM UTC

    The issue has been identified. We are rolling out the fix now. Wait times are returning to normal.

  4. monitoring Oct 10, 2025, 10:17 PM UTC

    The issue impacting wait times for Docker jobs has been fixed and wait times are back to normal. We are currently monitoring our systems to ensure stability and confirm full resolution.

  5. resolved Oct 10, 2025, 10:23 PM UTC

    This incident has been resolved. Wait times are back to normal. We thank you for your patience while our engineers fixed the underlying cause.

Read the full incident report →

Minor October 10, 2025

Delay in Usage API Data

Detected by Pingoru
Oct 10, 2025, 02:34 PM UTC
Resolved
Oct 10, 2025, 11:25 PM UTC
Duration
8h 51m
Affected: CircleCI API
Timeline · 5 updates
  1. identified Oct 10, 2025, 02:34 PM UTC

    An issue has been identified causing a delay in available usage API data. Customers may experience issues retrieving usage reports for recent timeframes.

  2. identified Oct 10, 2025, 05:36 PM UTC

    We traced the issue to a vendor and have reached out to them. As such, time to resolution remains unknown. Note: this does not affect historical data, just data for yesterday, October 9th.

  3. monitoring Oct 10, 2025, 07:21 PM UTC

    Recovery in progress. Currently monitoring.

  4. monitoring Oct 10, 2025, 09:05 PM UTC

    Recovery is ongoing. Apologies for the delay. We will provide updates as we get them. Timing remains tbd.

  5. resolved Oct 10, 2025, 11:25 PM UTC

    The incident has been resolved. We appreciate your patience. We will continue to monitor throughout the weekend.

Read the full incident report →

Notice October 7, 2025

Insights Page Loading Errors and Approval Job Button Issues

Detected by Pingoru
Oct 07, 2025, 10:45 PM UTC
Resolved
Oct 07, 2025, 10:57 PM UTC
Duration
12m
Timeline · 2 updates
  1. monitoring Oct 07, 2025, 10:45 PM UTC

    We identified an issue that was causing customers to experience errors when loading the Insights page since 21:30 UTC. Additionally, customers were unable to click buttons for Approval Jobs. The problematic change has been reverted and both issues have been resolved. The Insights page is now loading normally and Approval Job buttons are fully functional. We are currently monitoring our systems to ensure stability and confirm full resolution of the issue.

  2. resolved Oct 07, 2025, 10:57 PM UTC

    This incident has been resolved. Both the Insights page and Approval Job buttons are fully operational. System monitoring confirms stable operation Thank you for your patience while our engineers worked to resolve this issue.

Read the full incident report →

Minor October 1, 2025

Insights UI unresponsive

Detected by Pingoru
Oct 01, 2025, 07:44 PM UTC
Resolved
Oct 01, 2025, 11:04 PM UTC
Duration
3h 19m
Affected: CircleCI Insights
Timeline · 4 updates
  1. investigating Oct 01, 2025, 07:44 PM UTC

    We are currently investigating an issue with the Insights UI where workflow-related data is not loading properly. Users may encounter unresponsive behavior when attempting to access workflow metrics and analytics. Other CircleCI services remain operational. We'll provide an update as we work through this issue.

  2. identified Oct 01, 2025, 08:54 PM UTC

    We have identified the root cause of the unresponsive behavior affecting the Insights UI when accessing workflow metrics and analytics. Our engineering team is currently deploying a fix to resolve this issue. We will continue to monitor the deployment and provide updates as the fix is rolled out across all systems. Thank you for your patience.

  3. monitoring Oct 01, 2025, 09:27 PM UTC

    The fix has been successfully deployed and verified. The Insights UI is now responsive and workflow metrics and analytics are loading normally. We are actively monitoring the system to ensure continued stability and confirm the issue is fully resolved. Thank you for your patience while our engineers worked on mitigating this issue.

  4. resolved Oct 01, 2025, 11:04 PM UTC

    This incident has been resolved. The Insights UI is fully operational and all workflow data is accessible. Thank you for your patience during this incident.

Read the full incident report →

Minor September 8, 2025

Job start times for m1.medium, m2pro.medium, and m2pro.large are elevated

Detected by Pingoru
Sep 08, 2025, 03:54 PM UTC
Resolved
Sep 08, 2025, 07:14 PM UTC
Duration
3h 19m
Affected: macOS Jobs
Timeline · 3 updates
  1. identified Sep 08, 2025, 03:54 PM UTC

    Task start times for m1.medium, m2pro.medium, and m2pro.large are elevated and you may experience queueing.

  2. monitoring Sep 08, 2025, 06:19 PM UTC

    Mac M1 medium and large jobs are now starting normally—delays have been resolved and queue times have returned to standard levels. Please note that demand remains high for M2 Pro large and medium resource classes. For teams needing immediate capacity, Mac M4 Pro resources are currently available. You can find more information about available resource classes at https://circleci.com/docs/using-macos/#available-resource-classes. If you have any questions or need assistance, please contact our customer support team. Thank you for your patience during this period.

  3. resolved Sep 08, 2025, 07:14 PM UTC

    The issue impacting queue times for Mac M1 medium and large jobs has now been resolved. Mac M4 Pro resources remain available with additional capacity. Thank you for your patience while our engineers worked to resolve this issue.

Read the full incident report →