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Outage in AWS

Increased Error Rates - Zurich

Resolved Minor
March 07, 2026 - Started about 4 hours ago - Lasted about 1 hour

Incident Report

Summary AI Generated

AWS experienced increased error rates in the EU-CENTRAL-2 (Zurich) region for 1.2 hours, primarily caused by substantial error rates for PUT and GET requests to Amazon S3 due to issues with a subsystem responsible for assembling objects from bytes in storage. The incident affected numerous AWS services including EC2, Lambda, CloudWatch, and many others that depend on S3, though existing EC2 instances remained unaffected. AWS engineers implemented mitigations and observed early signs of recovery after triangulating the root cause.

We are investigating increased error rates in the EU-CENTRAL-2 Region.
Components affected
Amazon Athena Amazon CloudWatch Amazon EC2 Amazon ECR Amazon ECS Amazon EKS Amazon ELB Amazon Glacier Amazon Kinesis Data Streams Amazon Kinesis Firehose Amazon Managed Streaming for Apache Kafka Amazon OpenSearch Service Amazon Route 53 Amazon SageMaker Amazon S3 AWS Application Migration Service AWS AppSync AWS Batch AWS Client VPN AWS Cloud Map AWS CloudTrail AWS CodeDeploy AWS DataSync AWS Glue AWS KMS AWS Lambda AWS Storage Gateway AWS Transit Gateway AWS VPCE PrivateLink AWS AppConfig AWS AppConfig (eu-central-2) AWS AppSync (eu-central-2) AWS Application Migration Service (eu-central-2) Amazon Athena (eu-central-2) AWS Batch (eu-central-2) AWS Client VPN (eu-central-2) AWS Cloud Map (eu-central-2) AWS CloudTrail (eu-central-2) Amazon CloudWatch (eu-central-2) AWS CodeDeploy (eu-central-2) AWS DataSync (eu-central-2) Amazon EC2 (eu-central-2) Amazon ECR (eu-central-2) Amazon ELB (eu-central-2) Amazon ECS (eu-central-2) Amazon EKS (eu-central-2) AWS Fargate AWS Fargate (eu-central-2) Amazon Glacier (eu-central-2) AWS Glue (eu-central-2) AWS KMS (eu-central-2) Amazon Kinesis Data Streams (eu-central-2) Amazon Kinesis Firehose (eu-central-2) AWS Lambda (eu-central-2) Amazon Managed Streaming for Apache Kafka (eu-central-2) Amazon OpenSearch Service (eu-central-2) Amazon S3 (eu-central-2) Amazon SageMaker (eu-central-2) AWS Storage Gateway (eu-central-2) AWS Transfer Family AWS Transfer Family (eu-central-2) AWS Transit Gateway (eu-central-2) AWS VPCE PrivateLink (eu-central-2)

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Latest Updates ( sorted recent to last )
UPDATE about 3 hours ago - at 03/07/2026 08:28PM

We are seeing early signs of recovery and continue to monitor and work toward full recovery.

UPDATE about 3 hours ago - at 03/07/2026 08:17PM

We can confirm substantial error rates for PUT and GET requests to Amazon S3 in the EU-CENTRAL-2 Region. Engineers engaged immediately based on automated alarming. We have triangulated the issue to a subsystem responsible for assembling objects from bytes in storage. We have begun implementing mitigations, and are observing some improvement in error rates. We continue to work to identify the root cause, and are working on multiple parallel paths to fully mitigate the issue. Other AWS Services (such as EC2 launches) that rely on S3 are also affected by this issue. Existing EC2 instances are unaffected by this issue. We will provide another update by 12:45 PM PST, or sooner if we have additional information to share.

UPDATE about 4 hours ago - at 03/07/2026 07:53PM

We are investigating increased error rates in the EU-CENTRAL-2 Region.

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