Outage in AWS

Increased Error Rates and Latencies - N. Virginia

Minor

October 20, 2025 - Started about 7 hours ago

Incident Report

We are investigating increased error rates and latencies for multiple AWS services in the US-EAST-1 Region. We will provide another update in the next 30-45 minutes.

Components affected

Amazon Interactive Video Service Amazon Interactive Video Service (us-east-1) AWS Database Migration Service AWS Database Migration Service (us-east-1) AWS Elemental AWS Elemental (us-east-1) Amazon ECR Amazon ECR (us-east-1) Amazon FSx Amazon FSx (us-east-1) Multiple services Multiple services (us-east-1) Amazon CloudFront Amazon CloudWatch Amazon CloudWatch (us-east-1) AWS Global Accelerator Amazon DynamoDB Amazon DynamoDB (us-east-1) Amazon EC2 Amazon EC2 (us-east-1) Amazon EKS Amazon EKS (us-east-1) Amazon VPC Lattice Amazon VPC Lattice (us-east-1) AWS Config AWS Config (us-east-1) AWS IAM Identity Center AWS IAM Identity Center (us-east-1) AWS IAM AWS Private Certificate Authority AWS Private Certificate Authority (us-east-1) AWS Secrets Manager AWS Secrets Manager (us-east-1) AWS Systems Manager AWS Systems Manager (us-east-1) AWS VPCE PrivateLink AWS VPCE PrivateLink (us-east-1) Amazon Kinesis Data Streams Amazon Kinesis Data Streams (us-east-1) AWS Support Center Amazon Kendra Amazon Kendra (us-east-1) Amazon MQ Amazon MQ (us-east-1) Amazon SQS Amazon SQS (us-east-1) AWS Batch AWS Batch (us-east-1) Amazon Connect Amazon Connect (us-east-1) Amazon Managed Streaming for Apache Kafka Amazon Managed Streaming for Apache Kafka (us-east-1) AWS Organizations Amazon ELB Amazon ELB (us-east-1) AWS IoT Core AWS IoT Core (us-east-1) AWS NAT Gateway AWS NAT Gateway (us-east-1) Amazon AppFlow Amazon AppFlow (us-east-1) Amazon AppStream 2.0 Amazon AppStream 2.0 (us-east-1) Amazon DocumentDB Amazon DocumentDB (us-east-1) Amazon Kinesis Video Streams Amazon Kinesis Video Streams (us-east-1) Amazon Location Service Amazon Location Service (us-east-1) Amazon OpenSearch Service Amazon OpenSearch Service (us-east-1) Amazon RDS Amazon RDS (us-east-1) Amazon Transcribe Amazon Transcribe (us-east-1) Amazon WorkSpaces Amazon WorkSpaces (us-east-1) AWS Application Migration Service AWS Application Migration Service (us-east-1) AWS B2B Data Interchange AWS B2B Data Interchange (us-east-1) AWS CloudTrail AWS CloudTrail (us-east-1) AWS DataSync AWS DataSync (us-east-1) AWS Glue AWS Glue (us-east-1) AWS Storage Gateway Amazon API Gateway Amazon API Gateway (us-east-1) Amazon Polly Amazon Polly (us-east-1) Amazon SageMaker Amazon SageMaker (us-east-1) AWS Lambda AWS Lambda (us-east-1) AWS Network Firewall AWS Network Firewall (us-east-1) AWS Storage Gateway (us-east-1) AWS Transfer Family AWS Transfer Family (us-east-1) Amazon ECS Amazon ECS (us-east-1) Amazon Cognito Amazon Cognito (us-east-1) Amazon Managed Workflows for Apache Airflow Amazon Managed Workflows for Apache Airflow (us-east-1) Amazon Neptune Amazon Neptune (us-east-1) AWS Site-to-Site VPN AWS Site-to-Site VPN (us-east-1) AWS Verified Access AWS Verified Access (us-east-1) Amazon Redshift Amazon Redshift (us-east-1) Amazon Security Lake Amazon Security Lake (us-east-1) Amazon SES Amazon SES (us-east-1) AWS Directory Service AWS Directory Service (us-east-1) Amazon GuardDuty Amazon GuardDuty (us-east-1) AWS Systems Manager for SAP AWS Systems Manager for SAP (us-east-1) Amazon ElastiCache Amazon ElastiCache (us-east-1) Amazon S3 Amazon S3 (us-east-1) Amazon Chime AWS Firewall Manager AWS Firewall Manager (us-east-1) Amazon VPC IP Address Manager Amazon VPC IP Address Manager (us-east-1) AWS HealthLake AWS HealthLake (us-east-1) AWS Transit Gateway AWS Transit Gateway (us-east-1) Amazon Athena Amazon Athena (us-east-1) Amazon Pinpoint Amazon Pinpoint (us-east-1) Amazon WorkMail Amazon WorkMail (us-east-1) AWS CloudFormation AWS CloudFormation (us-east-1) AWS Payment Cryptography AWS Payment Cryptography (us-east-1) Amazon EMR Amazon EMR (us-east-1) Amazon EMR Serverless Amazon EMR Serverless (us-east-1) Amazon Bedrock Amazon Bedrock (us-east-1) Amazon Managed Service for Prometheus Amazon Managed Service for Prometheus (us-east-1) Amazon SNS Amazon SNS (us-east-1) Amazon EventBridge Amazon EventBridge (us-east-1) Amazon EventBridge Scheduler Amazon EventBridge Scheduler (us-east-1) AWS IoT Analytics AWS IoT Analytics (us-east-1) AWS IoT Events AWS IoT Events (us-east-1) AWS IoT FleetWise AWS IoT FleetWise (us-east-1) AWS IoT SiteWise AWS IoT SiteWise (us-east-1) AWS EB AWS EB (us-east-1) AWS HealthImaging AWS HealthImaging (us-east-1) AWS HealthOmics AWS HealthOmics (us-east-1) AWS Step Functions AWS Step Functions (us-east-1) AWS Outposts AWS Outposts (us-east-1)

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Latest Updates ( sorted recent to last )

UPDATE about 1 hour ago - at 10/20/2025 12:48PM

We are making progress on resolving the issue with new EC2 instance launches in the US-EAST-1 Region and are now able to successfully launch new instances in some Availability Zones. We are applying similar mitigations to the remaining impacted Availability Zones to restore new instance launches. As we continue to make progress, customers will see an increasing number of successful new EC2 launches. We continue to recommend that customers launch new EC2 Instance launches that are not targeted to a specific Availability Zone (AZ) so that EC2 has flexibility in selecting the appropriate AZ.

We also wanted to share that we are continuing to successfully process the backlog of events for both EventBridge and Cloudtrail. New events published to these services are being delivered normally and are not experiencing elevated delivery latencies.

We will provide an update by 6:30 AM PDT or sooner if we have additional information to share.

UPDATE about 2 hours ago - at 10/20/2025 12:10PM

We confirm that we have now recovered processing of SQS queues via Lambda Event Source Mappings. We are now working through processing the backlog of SQS messages in Lambda queues.

UPDATE about 2 hours ago - at 10/20/2025 11:48AM

We continue to work to fully restore new EC2 launches in US-EAST-1. We recommend EC2 Instance launches that are not targeted to a specific Availability Zone (AZ) so that EC2 has flexibility in selecting the appropriate AZ. The impairment in new EC2 launches also affects services such as RDS, ECS, and Glue. We also recommend that Auto Scaling Groups are configured to use multiple AZs so that Auto Scaling can manage EC2 instance launches automatically.

We are pursuing further mitigation steps to recover Lambda’s polling delays for Event Source Mappings for SQS. AWS features that depend on Lambda’s SQS polling capabilities such as Organization policy updates are also experiencing elevated processing times. We will provide an update by 5:30 AM PDT.

UPDATE about 3 hours ago - at 10/20/2025 11:08AM

We are continuing to work towards full recovery for EC2 launch errors, which may manifest as an Insufficient Capacity Error. Additionally, we continue to work toward mitigation for elevated polling delays for Lambda, specifically for Lambda Event Source Mappings for SQS. We will provide an update by 5:00 AM PDT.

UPDATE about 3 hours ago - at 10/20/2025 10:35AM

The underlying DNS issue has been fully mitigated, and most AWS Service operations are succeeding normally now. Some requests may be throttled while we work toward full resolution. Additionally, some services are continuing to work through a backlog of events such as Cloudtrail and Lambda. While most operations are recovered, requests to launch new EC2 instances (or services that launch EC2 instances such as ECS) in the US-EAST-1 Region are still experiencing increased error rates. We continue to work toward full resolution. If you are still experiencing an issue resolving the DynamoDB service endpoints in US-EAST-1, we recommend flushing your DNS caches. We will provide an update by 4:15 AM, or sooner if we have additional information to share.

UPDATE about 4 hours ago - at 10/20/2025 10:03AM

We continue to observe recovery across most of the affected AWS Services. We can confirm global services and features that rely on US-EAST-1 have also recovered. We continue to work towards full resolution and will provide updates as we have more information to share.

UPDATE about 4 hours ago - at 10/20/2025 09:27AM

We are seeing significant signs of recovery. Most requests should now be succeeding. We continue to work through a backlog of queued requests. We will continue to provide additional information.

UPDATE about 4 hours ago - at 10/20/2025 09:22AM

We have applied initial mitigations and we are observing early signs of recovery for some impacted AWS Services. During this time, requests may continue to fail as we work toward full resolution. We recommend customers retry failed requests. While requests begin succeeding, there may be additional latency and some services will have a backlog of work to work through, which may take additional time to fully process. We will continue to provide updates as we have more information to share, or by 3:15 AM.

UPDATE about 5 hours ago - at 10/20/2025 09:01AM

We have identified a potential root cause for error rates for the DynamoDB APIs in the US-EAST-1 Region. Based on our investigation, the issue appears to be related to DNS resolution of the DynamoDB API endpoint in US-EAST-1. We are working on multiple parallel paths to accelerate recovery. This issue also affects other AWS Services in the US-EAST-1 Region. Global services or features that rely on US-EAST-1 endpoints such as IAM updates and DynamoDB Global tables may also be experiencing issues. During this time, customers may be unable to create or update Support Cases. We recommend customers continue to retry any failed requests. We will continue to provide updates as we have more information to share, or by 2:45 AM.

UPDATE about 5 hours ago - at 10/20/2025 08:26AM

We can confirm significant error rates for requests made to the DynamoDB endpoint in the US-EAST-1 Region. This issue also affects other AWS Services in the US-EAST-1 Region as well. During this time, customers may be unable to create or update Support Cases. Engineers were immediately engaged and are actively working on both mitigating the issue, and fully understanding the root cause. We will continue to provide updates as we have more information to share, or by 2:00 AM.

UPDATE about 6 hours ago - at 10/20/2025 07:51AM

We can confirm increased error rates and latencies for multiple AWS Services in the US-EAST-1 Region. This issue may also be affecting Case Creation through the AWS Support Center or the Support API. We are actively engaged and working to both mitigate the issue and understand root cause. We will provide an update in 45 minutes, or sooner if we have additional information to share.

UPDATE about 7 hours ago - at 10/20/2025 07:11AM

We are investigating increased error rates and latencies for multiple AWS services in the US-EAST-1 Region. We will provide another update in the next 30-45 minutes.

source IsDown AWS DynamoDB and CloudWatch outage Reports started 6 minutes before official outage was reported

Users report errors accessing DynamoDB and CloudWatch, likely due to connection issues with AWS endpoints in the US East region.

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