Outage in AWS
Increased 5xx Errors
Resolved Minor
July 16, 2026 - Started 2 days ago
- Lasted about 4 hours
Incident Report
Summary AI Generated
Amazon CloudFront experienced increased 5xx errors (primarily 504 Gateway Timeouts) for approximately 3.7 hours, impacting customers using VPC Origins connectivity due to routing table capacity exhaustion in the packet processing subsystem responsible for routing requests from CloudFront edge locations to customer VPCs. The outage had significant real-world impact, with users reporting global application outages, failed inter-region failover, and P0-level incidents including downed login services and platform failures. AWS resolved the issue through a phased mitigation targeting the routing table capacity problem, with full recovery achieved within the 3.7-hour window; customers using non-VPC origin types were unaffected throughout.
We are investigating increased 5xx errors for Cloudfront customers utilizing VPC Origins connectivity.
Components affected
Amazon CloudFrontTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
UPDATE
2 days ago - at 07/16/2026 11:57AM
We continue to see significant signs of recovery as a result of our mitigation efforts, with full recovery expected within the next 45 minutes.
UPDATE
2 days ago - at 07/16/2026 11:27AM
We are seeing initial signs of recovery and continue to work toward full recovery.
UPDATE
2 days ago - at 07/16/2026 11:16AM
We continue working to resolve the increased 5xx errors for CloudFront customers utilizing VPC Origins connectivity. Customers utilizing other origin types remain unaffected by this issue. We have further scoped the issue down to routing table capacity within the packet processing subsystem responsible for routing requests from CloudFront's edge locations to resources within customer VPCs. We have identified and are currently testing a mitigation strategy to resolve the issue. Once testing is complete, we will deploy the mitigation in a phased approach. Based on the results from these tests, we will provide a clearer estimated time for resolution in our next update. We continue to recommend that customers who are able to do so temporarily change their origin type to resolve the errors. We will provide another update by 5:15 AM PDT, or sooner if additional information becomes available.
UPDATE
2 days ago - at 07/16/2026 10:18AM
We continue working to resolve the increased 5xx errors for CloudFront customers utilizing VPC Origins connectivity. Customers utilizing other origin types remain unaffected by this issue. Based on our investigation, we believe the root cause is related to a packet processing subsystem responsible for routing requests from CloudFront's edge locations to resources within customer VPCs. We continue to recommend that customers who are able to do so temporarily change their origin type to resolve the errors. We will provide another update by 4:15 AM PDT, or sooner if additional information becomes available.
UPDATE
2 days ago - at 07/16/2026 09:21AM
Starting at 12:45 AM PDT, we are experiencing increased 5xx errors for CloudFront customers utilizing VPC Origins connectivity. We have confirmed that customers utilizing other origin types are not impacted by this issue. Our engineers are engaged and are actively working to mitigate impact. As a workaround, customers who do not require VPC Origins can change their origin type to resolve the errors. We will provide another update by 3:15 AM PDT, or sooner if more information becomes available.
UPDATE
2 days ago - at 07/16/2026 08:44AM
We are investigating increased 5xx errors for Cloudfront customers utilizing VPC Origins connectivity.
source IsDown
Users report possible problems with AWS (Amazon CloudFront)
Reports started 10 minutes before official outage was reported
Users are reporting issues affecting Amazon CloudFront.
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