'Access-Co​ntrol-Allo​w-Origin'

About matlab production server config, I am quite sure that I have add --cors-allowed-origins * in the server config file, but the browser still show me: XMLHttpRequest cannot load http://localhost:9910/BondTools/pricecalc. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. Anyone could be helpful? Thanks in advance

[ruike]

Hello, where is the --cors-allowed-origins * configured, I can't find the configuration file in my webapp project

[Walter Roberson]

@ruike

https://www.mathworks.com/help/mps/server/corsallowedorigins.html

Answer 1

[mohammed]

save the file in html, open the file with Internet exploler. that is how it works for me, modern browser requires a complex security headers.

Answer 2

[Neeraj Rajpurohit]

Hi,

In my opinion this is because you are accessing the API from a file. You will need to apply different solutions to different browsers, the below link will help you to get a deep understanding.

Origin null is not allowed by Access-Control-Allow-Origin

Thanks,

Neeraj