CORS Issue with My Website's API: Cross-Origin Request Block

I’m encountering a CORS (Cross-Origin Resource Sharing) issue with my website’s API, and I’m seeking some assistance in resolving it. Here’s the scenario:

I have a website, and I’ve developed an API for this website hosted on a different domain, let’s say api. exampleapi. com. The API is accessed using HTTP methods like GET, POST, PUT, etc., and it works perfectly when accessed directly through tools like Postman. However, when I try to make requests to the API from my website’s frontend JavaScript code (using XMLHttpRequest or Fetch API), I encounter a CORS error.

The error message in the browser console typically says something like:
Access to XMLHttpRequest at 'https://api.exampleapi.com/endpoint' from origin 'https://www.example.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

I’ve already tried adding CORS headers on the API server side, such as:
Access-Control-Allow-Origin: *

or
Access-Control-Allow-Origin: https://www.example.com

but the issue persists.

I’ve also checked for any preflight OPTIONS requests that might fail due to CORS, but it seems like those requests aren’t even being made.

I’m seeking advice on how to properly configure CORS for my API to allow requests from my website’s domain. Moreover, if you want to download capcut mod apk then visit the given link. Additionally, if there are any other troubleshooting steps I should take or common pitfalls to avoid, I’d greatly appreciate the guidance.

Any help or insights on resolving this CORS issue would be highly appreciated. Thanks in advance!