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Outage in Palo Alto Networks

AWS us-east-1 outage impacting Cloud NGFW Services

Resolved Minor
May 08, 2026 - Started 4 days ago - Lasted about 23 hours
Official incident page

Incident Report

Summary AI Generated

An AWS cooling system failure in availability zone use1-az4 in the US-EAST-1 region caused elevated error rates and latencies for Palo Alto Networks Cloud NGFW services for 22.6 hours. The incident affected EC2 instances and EBS volumes in the impacted zone, with AWS shifting traffic away from the affected zone and recommending customers use other availability zones in the region. The incident was resolved after AWS restored normal temperatures and cooling systems in the affected zone.

we have identified an issue with AWS affecting the Cloud NGFW which is due to AWS Operational issue - Amazon Elastic Compute Cloud (N. Virginia) Availability Zone (use1-az4) in the US-EAST-1 Region CSP Health Status: https://health.aws.amazon.com/health/status AWS team are actively working to restore temperatures to normal levels in the affected Availability Zone (use1-az4) in the US-EAST-1 Region, though progress is slower than originally anticipated. Since our last update we have made incremental progress to restore cooling systems within the affected AZ, which will not be visible to external customers but are required for the restoration of affected services. In the impacted Availability Zone, EC2 Instances, EBS Volumes, and other AWS Services are also experiencing elevated error rates and latencies for some workflows. As part of our recovery effort, we have shifted traffic away from the impacted Availability Zone for most services. We recommend customers utilize one of the other Availability Zones in the US-EAST-1 Region, as existing instances in other AZs remain unaffected by this issue. If immediate recovery is required, we recommend customers restore from EBS Snapshots and/or replace affected resources by launching new replacement resources in one of the unaffected zones. We will provide an update by 10:00 PM PDT, or sooner if we have additional information to share.

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Latest Updates ( sorted recent to last )
RESOLVED 3 days ago - at 05/09/2026 02:38AM

This incident has been resolved.

INVESTIGATING 3 days ago - at 05/08/2026 10:10AM

AWS continues to experience the Operational issues with EC2 & EBS Volumes.

You can also monitor the underlying platform status via the AWS Health Status https://health.aws.amazon.com/health/status.

INVESTIGATING 4 days ago - at 05/08/2026 04:08AM

we have identified an issue with AWS affecting the Cloud NGFW which is due to AWS Operational issue - Amazon Elastic Compute Cloud (N. Virginia) Availability Zone (use1-az4) in the US-EAST-1 Region

CSP Health Status: https://health.aws.amazon.com/health/status

AWS team are actively working to restore temperatures to normal levels in the affected Availability Zone (use1-az4) in the US-EAST-1 Region, though progress is slower than originally anticipated. Since our last update we have made incremental progress to restore cooling systems within the affected AZ, which will not be visible to external customers but are required for the restoration of affected services. In the impacted Availability Zone, EC2 Instances, EBS Volumes, and other AWS Services are also experiencing elevated error rates and latencies for some workflows. As part of our recovery effort, we have shifted traffic away from the impacted Availability Zone for most services. We recommend customers utilize one of the other Availability Zones in the US-EAST-1 Region, as existing instances in other AZs remain unaffected by this issue. If immediate recovery is required, we recommend customers restore from EBS Snapshots and/or replace affected resources by launching new replacement resources in one of the unaffected zones. We will provide an update by 10:00 PM PDT, or sooner if we have additional information to share.

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