Response for preflight has invalid HTTP status code 401 I have started with super app from ionic and i have changed example url to my url My code is post(endpoint: string, body: any, reqOpts?: any) { reqOpts = { headers: new HttpHeaders().set(‘Authorization’,‘Basic V2FwcHlVSTp3QVBQWXVpQE5T’) }…

[image] nagarajsabhahith: Guys please help me out Read this forum post, about facing the same problem (Unauthorized). [image] 401 (Unauthorized) [SOLVED] ionic-v3 Hi, friends! When consuming the service it displays the following error: http://localhost:8080/Api/…

I have tried a lot of code changes with different different angular versions, unfortunately still i am not able to solve this issue… My request is send as OPTIONS instead of POST when i will add Authorization in headers if i remove all the headers then request is on POST with this Http, Headers, …

did you notice the double slash before get categories

ya i have noticed that and corrected but issue is still same… I have removed Authorization in my server and tested without headers in http.post, response is coming but when i will add Authorization, that time request method will automatically changing from POST to OPTIONS

I have added android platform and build apk… i got the response in real device but i didn’t get response in browser with headers…

How to solve this error angular http

Ionic Framework ionic-v3

wthijmen December 1, 2017, 9:15am 3

Read this forum post, about facing the same problem (Unauthorized).

Topic		Replies	Views
XMLHttpRequest cannot load Response for preflight has invalid HTTP status code 404 ionic-v3	4	22155	June 17, 2017
401 (Unauthorized) [SOLVED] ionic-v3	22	38673	April 4, 2018
Responded with a status of 401 ionic-v3	3	511	October 1, 2018
POST error : 401 Unauthorized, authentication ionic-v3	4	2538	May 25, 2017
Issue with http.post() ionic-v3	10	8038	November 21, 2018

How to solve this error angular http

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