I read all the suggestions and also followed the ionic suggestion how to overcome the CORS issue and get rid of the error: “Access-Control-Allow-Origin” with no success. I think I am missing the exact path conversion in proxies: The url I am trying to access in firebase is: https://firebasestorage.googleapis.com/v0/b/Test1-xxxxx.appspot.com/o/userData. My local host is: localhost:8100. I don’t understand how should I edit the path and proxyUrl in ionic.config.json: { “name”: “Test1”, “app_id”: “”, “v2”: true, “typescript”: true, “proxies”: [{ “path”: “…”, “proxyUrl”: “…” }]} code looks like this: firebase_storage_Ref.child(path/title).getDownloadURL().then(function(url) { var xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { var response = xmlhttp.responseText; // should have text here with no success } }; xmlhttp.open(“GET”, url, true); xmlhttp.send(); I have tried many ways with no success, I am probably missing the point. I am new to Apps in general. I am starting with Web app using angular2+Ionic2 Thanks for any help.

Follow this answer, check whether this work for you or not. [image] Ionic 2 CORS issue ionic-v3 Try this link that might helps you. (if you are working on MAC machine) or this (if you are working on windows machine)

Thanks for your answer, I was able to get my data with proxies settings according to help I got from Volodymyr Bilyachat on stackoverflow. Here is the solution that helped me: [Sami Koren] CORS with Firebase+IONIC2+Angularjs: No 'Access-Control-Allow-Origin' still exists cors, firebase-storage, proxies asked by Sami Koren on 04:21PM - 13 Nov 16

Need help with CORS and ionic 2

Ionic Framework ionic-v3

vaibsVB November 14, 2016, 6:06am 2

Follow this answer, check whether this work for you or not.

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Need help with CORS and ionic 2

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