AWS Declares Major Outage Resolved After Nearly 24 Hours of Disruption
Amazon Web Services (AWS) has resolved a widespread service disruption impacting its US-EAST-1 region. The incident, which began on Thu, Oct 19, 2025, affected global internet infrastructure dependent on AWS.
Amazon Web Services (AWS) has resolved a widespread service disruption impacting its US-EAST-1 region. The incident, which began on Thu, Oct 19, 2025, affected global internet infrastructure dependent on AWS.
By 3:01 PM PDT on Fri, Oct 20, 2025, AWS confirmed the restoration of all services, although some data processing backlogs were anticipated in tools such as AWS Config and Redshift.
The disruption was attributed to DNS resolution issues at the DynamoDB API endpoint in the US-EAST-1 region, AWS's busiest data center. Elevated error rates and latencies were detected at 11:49 PM PDT on October 19, initially traced to the DynamoDB service.
By 12:26 AM PDT on October 20, the root cause was identified as a faulty DNS update, which impaired server IP address resolution.
Amazon Web Services (AWS) has resolved a widespread service disruption impacting its US-EAST-1 region.
This issue triggered a cascade of failures: EC2 instance launches were delayed, Network Load Balancer checks failed, and connectivity issues arose for services such as Lambda, SQS, and CloudWatch.
Over 100 AWS services were affected, with significant impacts on consumer-facing platforms including Snapchat, Fortnite, Roblox, and Coinbase. Popular applications experienced outages, and services like Amazon Prime Video and Ring were also disrupted.
AWS's response involved flushing DNS caches, throttling EC2 launches, and enhancing polling rates for SQS queues. By 2:24 AM PDT, a fix for the DynamoDB DNS issue was deployed, and full restoration of EC2 launches occurred by 2:48 PM PDT.
Global services dependent on US-EAST-1, such as IAM updates and DynamoDB Global Tables, began to recover, allowing support operations to resume.
AWS plans to release a detailed post-incident report, with ongoing backlog processing for analytics services like Connect and Redshift. Users are advised to verify operations and monitor the AWS Health Dashboard for updates.
Based on reporting by Cyber Security News.
