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CORS on CloudFront

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Yesterday my app went down since I started getting "[Error] XMLHttpRequest cannot load https://d9rnb4peo8bk4.cloudfront.net due to access control checks. [Error] Failed to load resource: Preflight response is not successful" Something changed? Ny ideas how to fix it, CloudFront setup to allow CORS and was working fine. Any ideas?

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Developer Tools
Tags
AWS Cloud Control API
Language
English
asked 4 years ago433 views
1 Answer
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Hi, have you checked the response of preflight request ? The preflight request might received a 4xx or 5xx error. It is common that the error message does not include CORS response headers and browser blocked it for security caution.

AWS
answered 3 years ago

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