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Questions tagged [cors]

Use this tag when you see a message in the browser devtools console about CORS (Cross-Origin Resource Sharing) — e.g., your browser logged an error about Access-Control-Allow-Origin, and you want to know how to eliminate the error. Also for other questions on the CORS protocol (defined in the Fetch Living Standard as a way to use response headers to tell browsers to relax the same-origin policy and allow cross-origin XHR/Fetch/Ajax requests).

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CORS Error in Browser but not in Postman for PUT Method [duplicate]

I have a weird issue where, when I pass data in Angular from PUT method, I get CORS error and the function doesn't execute from the app. But, it works perfectly fine browser. POSTMAN response: ...
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0answers
17 views

Angular webapp runs in CORS issue sometimes [closed]

I am running into a problem with my Angular 9 app. Our webapp is consuming web service to spit out the data on the UI. We call the web service when the app loads, process the data and display it ...
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0answers
19 views

Angular: Enable CORS without modifying headers on server side (“No 'Access-Control-Allow-Origin' header” error) [duplicate]

Issue This is my first Angular application and I have trouble retrieving data from the backend server. I use as backend a webapp called Heurist which allows to create and manage a relational database ...
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19 views

socket.io, nodejs, express, GCP and HTTPS: Access to XMLHttpRequest has been blocked by CORS policy

I am developing an app with a React front end and a nodejs API. I am developing locally but am now trying to set up a staging environment. I am struggling to connect my React app to the API which runs ...
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1answer
31 views

Restarting an XMLHttpRequest on receiving a 404 response

I have the following method that iterates over an array containing objects that have a URL property (floodAreaData[0].polygon) which I fetch over an XMLHttpRequest, the results of which are passed to ...
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1answer
30 views

No 'Access-Control-Allow-Origin' header is present on the requested resource. i already have cors [closed]

i have this error "Access to XMLHttpRequest at 'XX' from origin 'http://localhost:3001' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested ...
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1answer
17 views

Preflight Response Error : Access-control-allow-origin is not allowed by Access-Control-Allow-Headers for Express Lambda with AWS API Gateway [duplicate]

I have prepared an Lambda function using Express(node.js) and enabled the Authorization with IAM as well. The API is working in the Postman as per below link : https://www.youtube.com/watch?v=...
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1answer
30 views

CORS preflight request error ExpressJS and Angular

I am trying to create a simple login using an ExpressJS backend, just to test to see how this would work. But for some weird reason an OPTIONS call is done on to my Angular front-end and throws a CORS ...
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1answer
44 views

Access-control-allow-origin is not allowed by Access-Control-Allow-Headers in preflight response

I have prepared an Lambda function using Express(node.js) and enabled the Authorization with IAM as well. The API is working in the Postman as per below link : https://www.youtube.com/watch?v=...
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0answers
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How to set quota for CORS preflight requests with AWS API Gateway

I'm building a serverless application with AWS Lambda and API Gateway. In order to prevent DDOS attacks doing a large number of requests costing me lots of money, I've set up a usage plan with a ...
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0answers
10 views

Sending requests to a limited API on the client side [duplicate]

I am using a public API to retrieve some data that I need. This API is however protected from attacks and thus allowes only a limited number of Requests from one source. I am creating an application, ...
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2answers
41 views

Setting up express + react, CORS

Hey I'm trying to make work my express with react locally. I'm starting react on localhost:3000 and express on 4040 but somehow my cors doesn't work. I have allowed in my server.js all cors stuff: var ...
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1answer
42 views

CORS issue in asp.net core and angular 9

I'm developing an application using angular 9 and asp.net core 3.1. I have configured the cors in server like below: public void ConfigureServices(IServiceCollection services){ ...
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0answers
16 views

Get cors error "must not be the wildcard '*' even i set a domain to the server

I created a nestjs (server) and nextjs (client) project with graphql. in nestjs server, i set up const app = await NestFactory.create(AppModule, { cors: { origin: 'http://localhost:...
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1answer
39 views

Request fails in browser, but returns 200 in fiddler with correct results, blocked by CORS policy

I am trying to set up an AWS lambda function, however when I call the endpoint, I am getting this error message back in the console. Access to fetch at 'https://*.execute-api.eu-west-1.amazonaws.com/...

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