Getting this error: has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No

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[Support Guide] Handling CORS on Netlify

Last reviewed by Netlify Support in July 2025 CORS stands for Cross Origin Resource Sharing. It is a HTTP header that tells the browsers how to handle a request from a certain origin to for an asset on your website. You can read more about it on Cross-Origin Resource Sharing (CORS) - HTTP | MDN (mozilla.org). By definition, an origin consists of scheme, domain and port. For example: https://www.example.com/ https:// is the scheme www.example.com is the domain 443 is the port (HTTPS is serve…