Atlassian Talent Outage History

Started May 14, 2026, 05:24 AM UTC· resolved May 14, 2026, 06:48 AM UTC

1. identified May 14, 2026, 05:24 AM UTC

   It is likely if you are experiencing any issues relating to logging in or accessing Atlassian products at this time it is likely due to this ongoing incident. We are continuing to receive reports about expanded product impact resulting from this incident. While our team continues to investigate the issue with urgency, we will continue to provide further updates here with additional information. We will provide further update within one hour, or sooner as further information becomes available.

2. identified May 14, 2026, 05:34 AM UTC

   Our team has identified the root cause of this issue and is now actively working on mitigating the issue with accessing Atlassian products. At this time, Atlassian customers should also be able to once again raise support requests with our team. We will provide further update within an hour as we are able to progress mitigating this issue.

3. monitoring May 14, 2026, 05:43 AM UTC

   Our team has implemented a mitigation for this issue and we are now seeing recovery across Atlassian products. We will continue to monitor this issue for any ongoing concerns, and provide further updates here within an hour as we are able to confirm a full recovery has taken place.

4. monitoring May 14, 2026, 06:40 AM UTC

   We are now able to see recovery for all impacted products, and users should be able to access their products as expected. Our team is continuing to monitor all products and services to ensure there is no further impact, and we will provide further update when this has been validated and the incident is closed.

5. monitoring May 14, 2026, 06:41 AM UTC

   We are now able to see recovery for all impacted products, and users should be able to access their products as expected. Our team is continuing to monitor all products and services to ensure there is no further impact, and we will provide further update when this has been validated and the incident is closed.

6. resolved May 14, 2026, 06:48 AM UTC

   All products and services impacted by this incident should now be fully recovered, and this incident is resolved.

7. postmortem May 19, 2026, 07:10 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 operation of a core identity service in the us-east region. This race condition resulted in insufficient capacity for the identity service in the affected region which started returning errors to dependent products. The incident was detected within a minute by automated monitoring systems and mitigated in 56 minutes. ### **IMPACT** During the incident, customers attempting to access Atlassian Cloud products in the us-east region experienced authentication and permission failures and were unable to access services. Customers also experienced errors when accessing the support portal until Atlassian fell back to an alternate support method. This was caused by a core identity service in the us-east region becoming unavailable. Affected products included Atlassian Administration, Atlassian Analytics, Bitbucket, Compass, Confluence, Jira, Jira Product Discovery, Jira Service Management and Trello. Some users outside us-east may have been affected in certain scenarios. ### **ROOT CAUSE** The incident was caused by a race condition in our internal deployment orchestration platform during a routine rollback operation of a core identity service in the us-east region. This race condition resulted in insufficient capacity for the identity service in the affected region which started returning errors to dependent products. ### **REMEDIAL ACTIONS PLAN & NEXT STEPS** We know that outages impact your productivity. Atlassian is prioritizing the following actions to help prevent similar incidents in future: * **Refine deployment orchestration safeguards** * Harden our deployment platform to prevent similar race conditions or resulting capacity loss during a rollback operation. * Streamline mitigation steps when a service becomes unavailable in a region. * **Reduce cross-region impact** * Improve regional isolation and fallback handling so an issue affecting a single region is less likely to impact customers or product functionality in other regions. We recognise how critical reliable access to Atlassian products is for our customers' productivity, and we apologize to customers who were impacted by this incident. Thanks, Atlassian

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Started May 08, 2026, 07:45 PM UTC· resolved May 08, 2026, 07:45 PM UTC

1. resolved May 08, 2026, 07:45 PM UTC

   On May 8, 2026, some customers utilizing Atlassian products experienced elevated error rates and degraded performance. The issue has now been resolved, and the service is operating normally for all affected customers.

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Started Dec 01, 2025, 08:24 PM UTC· resolved Dec 05, 2025, 02:20 AM UTC

1. identified Dec 01, 2025, 08:24 PM UTC

   We are investigating reports of intermittent errors for ALL Talent Cloud customers. The Data Ingestion item is failing, causing sync issues. We will provide another update within the next 2 hours.

2. identified Dec 01, 2025, 10:16 PM UTC

   Impact Customers using Jira Service Management and Talent have encountered an issue where New Hire Employee data is unavailable in Talent. This situation blocks the creation of onboarding plans for new hires. At present, all Talent customers are affected by this synchronization issue, which has persisted for more than 18 hours. Current Status and Next Steps The engineering team continues to work on the fix. Once we have more details to share about their findings and fixes, a new Update will be posted in a least 2 hours from now.

3. identified Dec 02, 2025, 12:17 AM UTC

   Our team continues to actively investigate the cause of this issue. We are now deploying additional monitoring to help us understand the root cause of this issue in more detail and will provide further update within 4 hours or as soon as a resolution becomes available.

4. identified Dec 02, 2025, 01:59 AM UTC

   Our team has now identified a potential root cause for this incident and is actively working on a hot-fix release to resolve the issue. We will provide further update when the expected fix is available, or within 4 hours, whichever is sooner.

5. identified Dec 02, 2025, 06:09 AM UTC

   A fix has now been released for this issue, and our internal monitoring is showing that services are now processing events as expected. A historical backlog of events exists from the start of the incident, and we are now processing those events. We will provide further update within 4 hours, or when processing is completed, whichever is sooner.

6. identified Dec 02, 2025, 09:57 AM UTC

   We released a fix, and internal monitoring shows services now process current events as expected. Reprocessing the historical backlog of events from the incident start is ongoing. We estimate it will take about 7.5 hours for the APSE region and 10 hours for the EU Central region. For the PROD-EAST region, we do not yet have an ETA since reprocessing has not started, but the team estimates it will be brief due to fewer events. We will provide an update within 10 hours or when reprocessing completes, whichever is sooner.

7. identified Dec 02, 2025, 08:04 PM UTC

   Impact Customers using Jira Service Management and the Talent product experienced interruptions due to missing or delayed data updates. This issue impacted the availability of new hire employee data, preventing the creation of onboarding plans. The disruption persisted for more than 18 hours, affecting all Talent customers. Current Status Normal data processing remains restored, following initial hotfix implementation. Reprocessing the backlog of events continues at an accelerated pace. The Asia-Pacific Southeast (APSE) region has been reprocessed as of 1240 UTC and is complete. The EU Central region has also finished as of 1740 UTC, with no resync required. The last remaining affected region is US East, which is expected to reprocess within the next 3-4 hours. Next Steps No further action is required at this time for the APSE and EU Central regions. Atlassian Engineering is actively monitoring reprocessing job status on US East. The next update will occur at 2300 UTC.

8. monitoring Dec 03, 2025, 01:08 AM UTC

   Data syncing within the impacted features should now be fully operational. Some final historical tasks are still replaying, and we will update again once these tasks have been completed and the issue is fully resolved.

9. resolved Dec 05, 2025, 02:20 AM UTC

   All historical tasks have now been replayed and completed, so this incident will be closed. For any customers that are still experiencing issues they feel may be related to this incident, please reach out to Atlassian Support for additional assistance.

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Started Oct 20, 2025, 07:56 AM UTC· resolved Oct 21, 2025, 05:24 AM UTC

1. investigating Oct 20, 2025, 07:56 AM UTC

   We have noticed that Atlassian Cloud services are impacted and our teams are actively investigating the same. We shall keep you informed of the progress every hour.

2. investigating Oct 20, 2025, 08:24 AM UTC

   Atlassian Cloud services are impacted and we are aware that our customers might not be able to create support tickets. Our teams are actively investigating the same. We shall keep you informed of the progress every hour.

3. investigating Oct 20, 2025, 09:23 AM UTC

   We are experiencing an outage due to some issue at the end of our public cloud provider. We are working closely with them to get this resolved or mitigated as quickly as possible. ETA of the same is not know at the moment. We shall continue to share updates every hour, if not sooner.

4. investigating Oct 20, 2025, 09:24 AM UTC

   We are experiencing an outage due to some issue at the end of our public cloud provider. We are working closely with them to get this resolved or mitigated as quickly as possible. ETA of the same is not know at the moment. We shall continue to share updates every hour, if not sooner.

5. identified Oct 20, 2025, 09:58 AM UTC

   We understand that our public cloud provider has identified the cause of the issue. We are starting to see some recovery and is working towards mitigation. We appreciate your patience. We shall continue to share updates every hour, if not sooner.

6. identified Oct 20, 2025, 11:07 AM UTC

   We continue to work with our public cloud provider towards mitigating the issue at the earliest. We appreciate your patience. We shall continue to share updates every hour, if not sooner.

7. identified Oct 20, 2025, 12:06 PM UTC

   Atlassian team is actively engaged and continues to work with our public cloud provider to mitigate this issue at the earliest. We are starting to see partial operations succeed. We appreciate your patience. We shall continue to share updates every hour, if not sooner.

8. identified Oct 20, 2025, 01:07 PM UTC

   Our public cloud provider is working to mitigate this issue quickly. We are seeing some early positive indicators and are continuing to monitor. We appreciate your patience and will continue to provide updates every hour or sooner.

9. identified Oct 20, 2025, 01:56 PM UTC

   Our public cloud provider is working to mitigate this issue quickly. We are seeing some early positive indicators and are continuing to monitor. We appreciate your patience and will continue to provide updates every hour or sooner.

10. identified Oct 20, 2025, 01:58 PM UTC

    Our public cloud provider is working to mitigate this issue quickly. We are seeing some early positive indicators and are continuing to monitor. We appreciate your patience and will continue to provide updates every hour or sooner.

11. identified Oct 20, 2025, 02:02 PM UTC

    We understand your pain and mitigating or fixing this issue is of utmost importance. Our public cloud provider is actively working to mitigate this issue on priority. We have been seeing partial operational success. We appreciate your patience and will continue to provide updates every hour or sooner.

12. identified Oct 20, 2025, 03:20 PM UTC

    Update - We understand the impact this issue is having on your operations and want to assure you that resolving this matter is our highest priority. Our public cloud provider is actively working to mitigate this issue with urgency. While we do not have a definitive ETA at this time, we remain committed to full resolution and deeply appreciate your patience as we work through this situation. We will continue to provide updates every hour or sooner as new information becomes available.

13. identified Oct 20, 2025, 03:21 PM UTC

    Update - We understand the impact this issue is having on your operations and want to assure you that resolving this matter is our highest priority. Our public cloud provider is actively working to mitigate this issue with urgency. While we do not have a definitive ETA at this time, we remain committed to full resolution and deeply appreciate your patience as we work through this situation. We will continue to provide updates every hour or sooner as new information becomes available.

14. identified Oct 20, 2025, 04:35 PM UTC

    Update - Thank you for your continued patience. We understand the impact this issue is having on your operations and want to assure you that resolving this matter is our highest priority. Our public cloud provider is still actively working to mitigate this issue with urgency and while we do not have a definitive ETA at this time, we remain committed to full resolution and deeply appreciate your patience as we work through this situation. We will be providing hourly updates on this issue.

15. identified Oct 20, 2025, 04:36 PM UTC

    Update - Thank you for your continued patience. We understand the impact this issue is having on your operations and want to assure you that resolving this matter is our highest priority. Our public cloud provider is still actively working to mitigate this issue with urgency and while we do not have a definitive ETA at this time, we remain committed to full resolution and deeply appreciate your patience as we work through this situation. We will be providing hourly updates on this issue.

16. identified Oct 20, 2025, 05:27 PM UTC

    Update - We understand the impact this issue is having on your operations and want to assure you that resolving this matter is our highest priority. Our public cloud provider is actively working to mitigate this issue with urgency. While we do not have a definitive ETA at this time, we remain committed to full resolution and deeply appreciate your patience as we work through this situation. We will continue to provide updates every hour or sooner as new information becomes available.

17. identified Oct 20, 2025, 05:43 PM UTC

    We are currently aware of an ongoing incident impacting Atlassian Cloud services due to an outage with our public cloud provider, AWS. We understand the impact this issue is having on your operations and want to assure you that resolving this matter is our highest priority and we are closely monitoring the health of AWS services. While we do not have a definitive ETA at this time, we remain committed to full resolution and deeply appreciate your patience as we work through this situation. We will continue to provide updates every hour or sooner as new information becomes available.

18. monitoring Oct 20, 2025, 06:38 PM UTC

    There have been no changes since our last update. We will provide our next updated by 9:00PM UTC or sooner as new information becomes available. We are currently aware of an ongoing incident impacting Atlassian Cloud services due to an outage with our public cloud provider, AWS. We understand the impact this issue is having on your operations and want to assure you that resolving this matter is our highest priority and we are closely monitoring the health of AWS services. While we do not have a definitive ETA at this time, we remain committed to full resolution and deeply appreciate your patience as we work through this situation.

19. monitoring Oct 20, 2025, 09:26 PM UTC

    Monitoring - We've started seeing continued product experience improvement. While we still have a backlog of event processing, we are seeing improvements in systems operational capabilities across all products. We estimate a significant improvement with the next few hours and will continue to monitor the health of AWS services and the effects on Atlassian customers. We appreciate your continued patience and remain committed to full resolution as we work through this situation. We will post our next update in two hours.

20. monitoring Oct 20, 2025, 10:58 PM UTC

    Our teams are continuing to monitor the recovery of systems across Atlassian products. This update is to inform that the Atlassian Support portal is fully operational at this time for customers that wish to contact support.

21. monitoring Oct 21, 2025, 12:03 AM UTC

    Our team is now seeing recovery across all impacted Atlassian products. We are continuing to monitor for individual products that may still be processing backlogged items now that services are restored. The Atlassian Support portal is currently still displaying a message directing customers to our temporary support channel. Please note that our support portal is currently fully functional for those attempting to raise requests. We are continuing to look into this alert to remove this message. We will provide further update on our recovery status in one hour.

22. monitoring Oct 21, 2025, 01:07 AM UTC

    We continue to see recovery progressing across all impacted products as backlogged items continue to be processed. The Atlassian Support portal is currently displaying a message directing customers to our temporary support channel. Please note that our support portal is currently fully functional for those attempting to raise requests. We are continuing to look into this alert to remove this message. We will provide further update on our recovery status in two hours.

23. monitoring Oct 21, 2025, 03:24 AM UTC

    The issue relating to the Atlassian Support portal displaying a message to customers to use our temporary support channel has now been resolved. The Atlassian Support portal is fully functional for any ongoing support issues. With regards to other Atlassian products, we continue to see recovery continuing across all impacted products and our teams are continuing to monitor as the recovery continues. We will provide further update on our recovery status within two hours.

24. resolved Oct 21, 2025, 05:24 AM UTC

    Our team is now able to see full recovery across the vast majority of Atlassian products. We are aware of some ongoing issues with specific components such as migrations and JSM virtual service agents, and our team is continuing to investigate with urgency. We apologise for the inconvenience that this incident has caused and we will provide further information when the Post Incident Investigation has been completed.

25. postmortem Oct 24, 2025, 05:54 PM UTC

    ### Postmortem publish date: Nov 19th, 2025 ### Summary All dates and times below are in UTC unless stated otherwise. Customers utilizing Atlassian products experienced elevated error rates and degraded performance between Oct 20, 2025 06:48 and Oct 21, 2025 04:05. The service disruptions were triggered due to an [AWS DynamoDB outage](https://aws.amazon.com/message/101925/#:~:text=1%3A50%20PM.-,DynamoDB,-Between%2011%3A48) and further affected by subsequent failures in [AWS EC2](https://aws.amazon.com/message/101925/#:~:text=service%20disruption%20event.-,Amazon%20EC2,-Between%2011%3A48) and [AWS Network Load Balancer](https://aws.amazon.com/message/101925/#:~:text=service%20disruption%20event.-,Amazon%20EC2,-Between%2011%3A48) within the us-east-1 region. The incident started at Oct 20, 2025 06:48 and was detected within six minutes by our automated monitoring systems. Our teams worked to restore all core services by Oct 21, 2025 04:05. Final cleanup of backlogged processes and minor issues was completed on Oct 22, 2025. We recognize the critical role our products play in your daily operations, and we offer our sincere apologies for any impact this incident had on your teams. We are taking immediate steps to enhance the reliability and performance of our services, so that you continue to receive the standard of service you have come to trust. ### IMPACT Before examining product-level impacts, it's helpful to understand Atlassian's service topology and internal dependencies. Products such as Jira and Confluence are deployed across multiple AWS regions. The data for each tenant is stored and processed exclusively within its designated host region. This design is intentional and represents the desired operational state, as it limits the impact of any regional outage strictly to tenants in-region, in this case us-east-1. While in-scope application data is pinned to the region selected by the customer, there are times when systems need to call other internal services that may be based in a different region. If a problem occurs in the main region where these services operate, systems are designed to automatically fail over to a backup region, usually within three minutes. However, if unexpected issues arise during this failover, it can take longer to restore services. In rare cases, this could affect customers in more than one region. It’s important to note that all in-scope application data for supported products is pinned according to a customer’s chosen region. **Jira** Between Oct 20, 2025 06:48 and Oct 20, 2025 20:00, customers with tenants hosted in the us-east-1 region experienced increased error rates when accessing core entities such as Issues, Boards, and Backlogs. This disruption was caused by AWS's inability to allocate AWS EC2 instances and elevated errors in AWS Network Load Balancer \(NLB\). During this window, users may also have observed intermittent timeouts, slow page loads, and failures when performing operations like creating or updating issues, loading board views, and executing workflow transitions. Between Oct 20, 2025 08:36 and Oct 20, 2025 09:23, customers across all regions experienced elevated failure rates when attempting to load Jira pages. This disruption was caused by the regional frontend service entering an unhealthy state during this specific time interval. Normally, the frontend service connects to the primary AWS DynamoDB instance located in the us-east-1 to retrieve the most recent configuration data necessary for proper operation. Additionally, the service is designed with a fallback mechanism that references static configuration data in the event that the primary database becomes inaccessible. Unfortunately, a latent bug existed in the local fallback path. When the frontend service nodes restarted, they were unable to load critical operational configuration data from primary or fallback sources, leading to the observed failures experienced by customers. Between Oct 20, 2025 06:48 and Oct 21, 2025 06:30, customers experienced significant delays and missing Jira in-app notifications across all regions. The notification ingestion service, which is hosted exclusively in us-east-1, exhibited an increased failure rate when processing notification messages due to AWS EC2 and NLB issues. This issue resulted in notifications being delayed - and in some cases, not delivered at all - to users worldwide. **Jira Service Management \(JSM\)** JSM was impacted similarly to Jira above, with the same timeframes and for the same reasons. Between Oct 20, 2025 08:36 and Oct 20, 2025 09:23, customers across all regions experienced significantly elevated failure rates when attempting to load JSM pages. This affected all JSM experiences including the Help Centre, Portal, Queues, Work Items, Operations, and Alerts. **Confluence** Between Oct 20, 2025 06:48 and Oct 21, 2025 02:45, customers using Confluence in the us-east-1 region experienced elevated failure rates when performing common operations such as editing pages or adding comments. The primary cause of this service degradation was the system's inability to auto-scale due to AWS EC2 issues to manage peak traffic load effectively. Though the AWS outage ended at Oct 20, 21:09, a subset of customers continued to experience failures as some Confluence web server nodes across multiple clusters remained in an unhealthy state. This was ultimately mitigated by recycling the affected nodes. To protect our systems while AWS recovered, we made a deliberate decision to enable node termination protection. This action successfully preserved our server capacity but, as a trade-off, it extended the time required for a full recovery once AWS services were restored. **Automation** Between Oct 20, 2025 06:55 and Oct 20, 2025 23:59, automation customers whose rules are processed in us-east-1 experienced delays of up to 23 hours in rule execution. During this window, some events triggering rule executions were processed out of order because they arrived later during backlog processing. This caused potential inconsistencies in workflow executions, as rules were run in the order events were received, not when the action causing the event occurred. Additionally, some rule actions failed because they depend on first-party and third-party systems, which were also affected by the AWS outage. Customers can see most of these failures in their audit logs; however, a few updates were not logged due to the nature of the outage. By Oct 21, 2025 5:30, the backlog of rule runs in us-east-1 was cleared. Although most of these delayed rules were successfully handled, there were some additional replays of events to ensure completeness. Our investigation confirmed that a few events may never have triggered their associated rules due to the outage. Between Oct 20, 2025 06:55 and Oct 20, 2025 11:20, all non-us-east-1 regional automation services experienced delays of up to 4 hours in rule execution. This was caused by an upstream service that was unable to deliver events as expected. The delivery service encountered a failure due to a cross-region dependency call to a service hosted in the us-east-1 region. Because of this dependency issue, the delivery service was unable to successfully deliver events throughout this time frame, resulting in customer-defined rules not being executed in a timely manner. **Bitbucket and Pipelines** Between Oct 20, 2025 06:48 and Oct 20, 2025 09:33, Bitbucket experienced intermittent unavailability across core services. During this period, users faced increased error rates and latency when signing in, navigating repositories, and performing essential actions such as creating, updating, or approving pull requests. The primary cause was an AWS DynamoDB outage that impacted downstream services. Between Oct 20, 2025 06:48 and Oct 20, 2025 22:46, numerous Bitbucket Pipeline steps failed to start, stalled mid-execution, or experienced significant queueing delays. Impact varied, with partial recoveries followed by degradation as downstream components re-synchronized. The primary cause was an AWS DynamoDB outage, compounded by instability in AWS EC2 instance availability and AWS Network Load Balancers. Furthermore, Bitbucket Pipelines continued to experience a low but persistent rate of step timeouts and scheduling errors due to AWS bare-metal capacity shortages in select availability zones. Atlassian coordinated with AWS to provision additional bare-metal hosts and addressed a significant backlog of pending pods, successfully restoring services by 01:30 on Oct 21, 2025. **Trello** Between Oct 20, 2025 06:48 and Oct 20, 2025 15:25, users of Trello experienced widespread service degradation and intermittent failures due to upstream AWS issues affecting multiple components, including AWS DynamoDB and subsequent AWS EC2 capacity constraints. During this period, customers reported elevated error rates when loading boards, opening cards, adding comments or attachments. **Login** Between Oct 20, 2025 06:48 and Oct 20, 2025 09:30, a small subset of users experienced failures when attempting to initiate new login sessions using SAML tokens. This resulted in an inability for those users to access Atlassian products during that time period. However, users who already had valid active sessions were not affected by this issue and continued to have uninterrupted access. The issue impacted all regions globally because regional identity services relied on a write replica located in the us-east-1 region to synchronize profile data. When the primary region became unavailable, the failover to a secondary database in another region failed, which delayed recovery. This failover defect has since been addressed. **Statuspage** Between Oct 20, 2025 06:48 and Oct 20, 2025 09:30, Statuspage customers who were not already logged in to the management portal were unable to log in to create or update incident statuses. This impact was restricted only to users who were not already logged in at the time. The root cause was the same as described in the Login section above, and it was resolved by the same remediation steps. ### REMEDIAL ACTION PLAN & NEXT STEPS We have completed the following critical actions designed to help prevent cross-region impact from similar issues: * Resolved the code defect in the fallback option to ensure that Jira Frontend Services in other regions remain unaffected during a region-wide outage. * Fixed the issue that prevented timely failover of the identity service which impacted new login sessions. * Resolved the code defect so that delivery services in unaffected regions remain operational during region-wide outages. Additionally, we are prioritizing the following improvement actions: * Implement mitigation strategies to strengthen resilience against region-wide outages in the notification ingestion service. Although disruptions to our cloud services are sometimes unavoidable during outages of the underlying cloud provider, we continuously evaluate and improve test coverage to strengthen resilience of our cloud services against these issues. We recognize the critical importance of our products to your daily operations and overall productivity, and we extend our sincere apologies for any disruptions this incident may have caused your teams. If you were impacted and require additional details for internal post-incident reviews, please reach out to your Atlassian support representative with affected timeframes and tenant identifiers so we can correlate logs and provide guidance. Thanks, Atlassian Customer Support

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Started Sep 22, 2025, 05:59 AM UTC· resolved Sep 22, 2025, 07:17 AM UTC

1. identified Sep 22, 2025, 05:59 AM UTC

   Our team is performing an investigation into all Atlassian products and services to understand the full impact of the prior certificate changes that caused this incident. While many services are restored we are continuing to monitor for additional impacted service issues that customers may be experiencing.

2. monitoring Sep 22, 2025, 06:55 AM UTC

   Our team has investigated and enabled configuration changes which should be restoring services across all impacted products starting at 06:17AM UTC. We are monitoring for recovery across all products and services at this time, and will provide further update when available.

3. resolved Sep 22, 2025, 07:17 AM UTC

   A configuration change to our CDN configuration for the atlassian.net domain resulted in customer traffic temporarily being dropped. This was immediately identified by our monitoring systems and rolled back. A public PIR with full details will be issued as a follow up.

4. postmortem Oct 01, 2025, 06:23 AM UTC

   ### **SUMMARY** On September 22, 2025, between 04:38 and 04:48 UTC, Atlassian customers experienced connection errors preventing access to their [atlassian.net](http://atlassian.net/) sites. Some customers observed intermittent errors as services gradually recovered until 06:17 UTC. The event was triggered by a faulty configuration change to our Content Delivery Network \(CDN\). The change included an invalid hostname which prevented customers from successfully connecting to [atlassian.net](http://atlassian.net/) domains. The incident was detected within 1 minute by our monitoring systems and mitigated by rolling back the change, which put Atlassian systems into a known good state. The acute impact was resolved in 10 minutes and all lingering errors resolved in 1 hour 38 minutes. ### **IMPACT** The acute impact occurred on September 22, 2025, between 04:38 UTC and 04:48 UTC to Confluence, Compass and Jira, including Jira Service Management. The incident caused service disruption to customers when they attempted to load those products in their browser or interact with APIs. Between 04:48 UTC and 06:17 UTC some customers continued to observe intermittent errors as services gradually recovered. ### **ROOT CAUSE** The issue was caused by a change to the hostname configuration of our Content Delivery Network \(CDN\). As a result, the products mentioned could not receive connections, and the users received TLS handshake errors, followed by HTTP 503 and 403 errors. More specifically a new CDN configuration contained a resource name which conflicted with the existing customer-serving CDN resource, and was able to be deployed, overwriting it. The root cause of the incident was the failure in the detection of the bug by our pre-deployment validations and tests. ### **REMEDIAL ACTIONS PLAN & NEXT STEPS** We know that you rely on our products for your daily operations and productivity, and we sincerely apologize for any impact this disruption has had on you, your team or your organisation. We are prioritizing the following improvement actions to help avoid repeating this type of incident: * Improved pre-deployment change controls and testing. * Improved validation of target configurations before deployment to ensure customer-serving CDN resources cannot their hostnames changed. * Sharding of our CDN configuration to enable progressive changes. We sincerely appreciate your understanding and patience as we improve our processes to provide a better customer experience. Thank you, Atlassian Customer Support

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