Amazon Web Services Outage History

We are investigating elevated packet loss in the EU-SOUTH-2 Region.

We are experiencing elevated packet loss with a single Availability Zone (eus2-az1) in the EU-SOUTH-2 Region. This issue is also resulting in elevated API latencies and error rates for other workflows and AWS Services. Engineers were automatically engaged and are working to identify the root cause and to mitigate the issue. We will provide you with another update by 10:15 AM PDT or sooner as new information becomes available.

Our efforts to mitigate the elevated packet loss with a single Availability Zone (eus2-az1) in the EU-SOUTH-2 Region is still underway. We are seeing some signs of improvement as a result of multiple parallel efforts. We continue to work to confirm root cause and fully mitigate the issue. While we currently do not have an estimate for how long our actions will take, we will keep you informed of our progress and provide you with another update by 11:00 AM PDT or sooner as new information becomes available.

We have identified the root cause and are currently focusing our mitigation efforts to drive full recovery. While we don't have an exact estimate for how long our current efforts will take, we do expect to see incremental improvements as our efforts proceed. We will provide you with another update by 11:45 AM PDT, or sooner if new information becomes available.

We are seeing early signs of recovery. We will provide you with another update by 12:00 PM PDT.

Between 8:48 AM and 11:28 AM PDT, we experienced elevated packet loss within a single Availability Zone (eus2-az1) in the EU-SOUTH-2 Region. This issue resulted in elevated API latencies and error rates for multiple workflows and AWS Services. We were automatically alerted to the issue at 8:54 AM, and immediately began work to identify the root cause while taking multiple parallel paths to mitigate the issue. By 10:00 AM, our mitigation efforts had led to some improvements. By 10:38 AM, we identified the root cause as related to a networking configuration change that we were able to revert the change which led to full mitigation by 11:28 AM. The issue has been resolved and the service is operating normally.

We are investigating elevated packet loss in the EU-SOUTH-2 Region.

We are experiencing elevated packet loss with a single Availability Zone (eus2-az1) in the EU-SOUTH-2 Region. This issue is also resulting in elevated API latencies and error rates for other workflows and AWS Services. Engineers were automatically engaged and are working to identify the root cause and to mitigate the issue. We will provide you with another update by 10:15 AM PDT or sooner as new information becomes available.

Our efforts to mitigate the elevated packet loss with a single Availability Zone (eus2-az1) in the EU-SOUTH-2 Region is still underway. We are seeing some signs of improvement as a result of multiple parallel efforts. We continue to work to confirm root cause and fully mitigate the issue. While we currently do not have an estimate for how long our actions will take, we will keep you informed of our progress and provide you with another update by 11:00 AM PDT or sooner as new information becomes available.

We have identified the root cause and are currently focusing our mitigation efforts to drive full recovery. While we don't have an exact estimate for how long our current efforts will take, we do expect to see incremental improvements as our efforts proceed. We will provide you with another update by 11:45 AM PDT, or sooner if new information becomes available.

We are seeing early signs of recovery. We will provide you with another update by 12:00 PM PDT.

We are investigating increased API error rates in the US-EAST-1 Region.

We can confirm increased error rates affecting new instance launches, including elevated API error rates for RunInstances, CreateFleet, and related EC2 launch workflows in the US-EAST-1 Region. Customers attempting to launch new EC2 instances may experience launch failures or elevated API response latency. Our engineers are actively engaged and working towards recovering the issue. We are seeing initial signs of recovery. Existing instances remain unaffected. We recommend retrying failed RunInstances and CreateFleet API calls. We will provide an update by 5:30 PM PDT or sooner.

Between 3:49 PM and 5:06 PM PDT, we experienced increased error rates affecting new instance launches in the US-EAST-1 Region. During this time, customers may have experienced elevated error rates when attempting to launch new EC2 instances through RunInstances, CreateFleet, and related EC2 launch workflows. AWS services that launch EC2 instances on behalf of customers, including Amazon ECS, AWS Fargate, Amazon EMR, amongst others were also impacted during this period. We identified the root cause as a recent deployment to a subsystem within the EC2 service responsible for processing instance launch requests. We initiated a rollback of the problematic deployment and began observing initial signs of recovery at 4:44 PM. Existing instances remain unaffected. The issue has been resolved and the service is operating normally.

Starting at 2:12 PM PDT, we began experiencing increased API error rates for STS and Sign In when using SAML. Our engineering team was automatically engaged at 2:19 PM to begin investigating the root cause. There is no work around available at this time. We will provide another update by 3:30 PM PDT.

We are seeing early signs of recovery and continue to monitor for full recovery. We will provide another update at 4:15 PM, or sooner if we have additional information to share.

We continue to see recovery holding steady for the STS AssumeRoleWithSAML and AssumeRoleWithWebIdentityAPIs in the US-WEST-2 Region. Error rates are now back to pre-event levels, and continue actively monitoring to confirm full recovery. We will provide another update by 5:15 PM or earlier.

Between 2:12 PM and 3:18 PM PDT, we experienced increased API error rates affecting the STS AssumeRoleWithSAML and AssumeRoleWithWebIdentity APIs in the US-WEST-2 Region. The root cause was determined to be due to an issue with an STS subsystem responsible for communicating with external identity providers. Other AWS Services that rely on these identity federation protocols were also affected. At 3:18 PM, we observed signs of recovery and continued to monitor to ensure stability and full recovery. The issue is resolved and the service is operating normally at this time.

We are experiencing increased error rates affecting real-time metrics in the AP-NORTHEAST-1 Region. Customers may experience missing or delayed real-time metric data.

Between 4:58 PM and 6:34 PM PDT, we experienced increased delays affecting real-time metrics for Amazon Connect in the AP-NORTHEAST-1 Region, resulting in missing or stale data. During this time, customers may have experienced missing data within analytics reports, and may have observed issues if accessing realtime metrics within contact Flows, such as checking agent staffing. We identified the root cause to be an issue with the subsystem responsible for metric event delivery. We started applying the mitigations at 6:13 PM and mitigated the issue by 6:34 PM. The issue has been resolved and the service is operating normally.

AP-NORTHEAST-1リージョンにおいて、エラー率が上昇しており、リアルタイムメトリクスに影響が出ています。お客様はリアルタイムメトリクスデータの欠落または遅延を経験する可能性があります。| We are experiencing increased error rates affecting real-time metrics in the AP-NORTHEAST-1 Region. Customers may experience missing or delayed real-time metric data.

We can confirm elevated network packet loss, impacting AWS Direct Connect connectivity in AP-SOUTH-1 Region. Our engineering team was automatically engaged at 9:54 AM to begin investigating the issue. There are no workarounds available at this time. We will provide another update by 11:30 AM PDT.

We have identified the root cause to be related to a change made to a configuration system responsible for assigning routes to the devices. We have begun the work to reduce the packet loss that is impacting AWS Direct Connect in the AP-SOUTH-1 Region, and we expect recovery to take place gradually over the next 30 minutes. As we gain confidence in these efforts, we will seek to parallelize our efforts to speed recovery. We will provide another update by 12:00 PM PDT.

Between 9:42 AM and 11:44 AM PDT, we experienced elevated network packet loss impacting AWS Direct Connect connectivity in the AP-SOUTH-1 Region. Our engineering team was automatically engaged at 9:46 AM to begin investigating. By 10:51 AM, we understood the root cause to be a configuration change made to a system responsible for assigning routes to devices. As we gained confidence in our mitigation steps, we parallelized our efforts to further reduce the packet loss. The issue is resolved and the service is operating normally.

To support compliance with the US Government export control directive, Anthropic has asked us to revoke access to Claude Fable 5 and Claude Mythos 5 for all users in all regions. All other models, including Opus4.8, are not affected and you can continue using them in full confidence. Please view the Anthropic statement for further details: https://www.anthropic.com/news/fable-mythos-access

Claude Fable 5 and Claude Mythos 5 models remain unavailable for all users in all regions. We are resolving this Health event. For further details please view the Anthropic statement .

Between 5:50 PM and 7:15 PM PDT, we experienced connectivity issues that may have impacted Internet performance for some customers in the SA-EAST-1 Region. During this time, connectivity to instances and services within the Region was not affected. Our engineering team was automatically engaged at 5:51 PM PDT and immediately began investigating the issue. We identified the root cause and implemented a fix, which mitigated the issue at 7:15 PM PDT. The issue has been resolved and the service is operating normally.

We are investigating increased error rates for Route53 API calls.

We are investigating increased error rates for Route53 API calls.

Between 4:00 PM and 4:46 PM, we experienced increased error rates for the Route53 APIs. This issue did not impact resolution of existing DNS records. Engineers were automatically engaged and immediately began investigating the issue. During this time, customers may have received 500s for Route53 APIs and the Route53 Management Console. We have identified the root cause and have mitigated this issue. Other AWS Services that call the Route53 APIs in their workflows may also have been impacted during this time. We recommend retrying any failed operations or stuck workflows. We do not expect recurrence of this issue. The issue has been resolved and the service is operating normally.