W3cubDocs

/HTTP

Errors: CORSOriginHeaderNotAdded

Reason

Reason: CORS header ‘Origin’ cannot be added

What went wrong?

The user agent was unable to add the required Origin header to the HTTP request. All CORS requests must have an Origin header.

This can happen if the JavaScript code is running with enhanced privileges allowing it access to multiple domains' content, for example.

See also

© 2005–2020 Mozilla and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors/CORSOriginHeaderNotAdded