427 questions
0
votes
0
answers
31
views
HttpMethod.Post gives an 401 error even though it was supplied with credentials [duplicate]
I am trying to create a post method to create a data that pushes to my DB
this is my service to call my API:
public async Task CreateTest(TestsDto testDto)
{
try
{
var request = new ...
- 191
2
votes
0
answers
69
views
ASP.NET Core SignalR CORS issue: "Request header field X-Requested-With is not allowed by Access-Control-Allow-Headers in preflight response"
I'm facing an inconsistent CORS issue with SignalR in my ASP.NET Core and Angular application. On my machine, the connection works fine in Chrome but fails with a CORS error in Edge. However, for some ...
1
vote
1
answer
202
views
CORS Error: Preflight Request (OPTIONS) Fails
Iβm developing a translation API for a Chrome extension using Express and Netlify Functions. However, Iβm encountering issues with CORS when making requests from the browser. The preflight OPTIONS ...
- 43
1
vote
2
answers
356
views
How do I get Backblaze B2 to respond with Access-Control-Allow-Origin?
I'm trying to fetch an image using JavaScript from a Backblaze bucket that is set to allPrivate.
I have a correct authorization code that works if I fetch the image like this:
echo '<img src="'...
- 957
0
votes
1
answer
37
views
Why are my getting a preflight/Option request between server to server POST request
Please I'm making a POST request from my web Server(Node.js) to another web Server(Php). Can it be possible for my Node.js Server to make a preflight/OPTION request to the other PHP web server if the ...
0
votes
1
answer
55
views
How to manually add response Access-Control-Allow headers to preflight requests
I have an express server ("express": "^4.19.2") set up and use this custom function to add response headers:
const allowCORS = (req: Request, res: Response, next: NextFunction): ...
- 825
0
votes
0
answers
75
views
Preflight OPTIONS request fails fetching file from GitHub Pages site because of CORS error
I have an Android app and a Flutter-web app that fetch some files from my github pages site.
The following command
.\curl -v https://mygithubaccount.github.io/myrepository/config.yaml > log_command....
- 3,335
1
vote
0
answers
197
views
CORS breaks in Vite dev server but works in Webpack dev server
Most of our development uses a mock backend server running on the same machine as the Vite/Webpack dev server. We also need to connect the local dev server to the "real" Java BE server ...
4
votes
1
answer
9k
views
CORS issue - Redirect is not allowed for a preflight request
UPDATE: I was able to solve the issue thanks to the Sean's suggestion below.
Look at the response headers and see where the request wants to re-direct the client to (using the Location header). That ...
0
votes
2
answers
133
views
Google app engine: call from another domain not working
calling an app engine (jetty @WebServlet) from another domain gives an error. In the logs I see the 'preflight' successful result, but the servlet code is not reached (a printout as the first line ...
0
votes
1
answer
509
views
Download a file from pre-signed url from s3 using Angular
Goal:
My angular app needs to read this json file from AWS S3 Pre-signed URL
Problem:
When I'm trying to get with http call a Pre-signed URL from S3 bucket, I'm getting an error,
https://mydomain has ...
- 139
2
votes
0
answers
399
views
Preflight Request throwing an CORS error on AWS API Gateway
I am learning about nuances of AWS hosting.
I have relatively small app that works well on localhost, and in combination with Postman.
My setup is:
S3 hosted React app - with Cloudfront distribution ...
- 31
0
votes
1
answer
433
views
ASP.NET Core 6 MVC : cors error on HttpPost only with authorization policy
I have added my ASP.NET Core 6 MVC application to Azure "App registrations" and I'm able to login using the Microsoft WebUI and perform GET requests to obtain e.g. my views.
The application ...
- 3,187
-1
votes
2
answers
920
views
Call to web api blocked by CORS policy even though .net webapi allows all methods
UPDATE 2:
SOLVED: See my answer below.
UPDATE 1:
Even if I hard code the program.cs in my webapi to ALWAYS set the Access-Control-Allow-Origin header the header is NOT set when calling the api with an ...
- 655
1
vote
0
answers
48
views
CORS preflight request is redirected and didn't passed
On my website, when user session is expired, the website redirects user to login page, nevertheless I have this CORS issue which doesn't allow me to do this:
...response to preflight request doesn't ...
