How do I resolve the error "CloudFront wasn't able to connect to the origin"?

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Published Feb 17, 2025

For more details on this topic, see the Knowledge Center article associated with this video: https://repost.aws/knowledge-center/resolve-cloudfront-connection-error

Supplemental Links:
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/cnames-and-https-requirements.html#https-requirements-certificate-issuer to the video description

https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/secure-connections-supported-ciphers-cloudfront-to-origin.html

https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/LocationsOfEdgeServers.html

Gabriela shows you how to resolve the error "CloudFront wasn't able to connect to the origin" | Amazon Web Services.

0:00 Introduction
0:22 Scenario one: host header or origin domain name mismatch in the SSL negotiation
3:03 Scenario two: SSL certificate on the origin is expired or invalid
4:36 Scenario three: Using SSL protocols and ciphers that aren't supported by CloudFront
5:16 Scenario four: Origin isn't responding on the ports specified in the origin settings
6:06 Scenario five: HTTP 502 Error
7:48 Scenario seven: HTTP 502 Error - DNS error (NonS30OriginDnsError)
3:00 Amazon Athena to filter and review all requests that receive a 500/503 Error
9:13 Closing

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