Hello guys, I am trying to load URL (which is SSRS Report) which is having authentication. Below is the code let header = new Headers(); header.append(‘Access-Control-Allow-Origin’,‘ http://localhost:8100 ’); header.append(‘Access-Control-Allow-Credentials’, ‘true’); header.append(“Access-Control…

XMLHttpRequest cannot load URL. Response for preflight has invalid HTTP status code 401

quyle1703 January 17, 2018, 6:00pm 8

Solution you need is here

Topic		Replies	Views
XMLHttpRequest returning 405 on preflight ionic-v1	8	2758	February 7, 2017
XMLHttpRequest cannot load Response for preflight has invalid HTTP status code 404 ionic-v3	4	22104	June 17, 2017
Http header not setting for api call ionic-v3	21	4915	January 12, 2018
No 'Access-Control-Allow-Origin' header is present on the requested resource Ionic ionic-v3	8	8280	October 23, 2018
The server responded with a status of 401 (Unauthorized) ionic-v3	14	5182	July 19, 2021