I am getting an error when I try to make request from my react SPA application to get id and access token from Azure AD. Below is the error from the browser console log:
Access to XMLHttpRequest at 'https://login.microsoftonline.com/{tenant id}/oauth2/token' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
I am trying PKCE flow for my SPA and I am not using any JS library. I am making hte request with plain XMLHttpRequest.
Please suggest what I am missing.
You can use this error with install "Allow CORS: Access-Control-Allow-Origin" or same extention on your browser.
Related
I am trying to setup a Cloud Gateway between React App and NodeJS application
Below is error I am getting on ReactApp:
Access to XMLHttpRequest at 'http://localhost:8080/graphql' from origin 'http://localhost:3000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
I am already tried below link, as much may be with newer version of Cloud Gateway it is not working.
Attempt #1:
spring.cloud.gateway.globalcors.cors-configurations.[/**].allowedOrigins=*
spring.cloud.gateway.globalcors.cors-configurations.[/**].allowedMethods=*
With this I was getting Header issue so I added:
spring.cloud.gateway.globalcors.cors-configurations.[/**].allowedHeaders=*
I am getting below error:
The 'Access-Control-Allow-Origin' header contains multiple values 'http://localhost:3000, *', but only one is allowed.
Attempt #2:
I tried adding the following bean:
#Bean
Function<GatewayFilterSpec, UriSpec> brutalCorsFilters() {
return f -> f
.setResponseHeader("Access-Control-Allow-Origin", "*")
.setResponseHeader("Access-Control-Allow-Methods", "*")
.setResponseHeader("Access-Control-Expose-Headers", "*");
}
But still no luck
Repo: https://github.com/shah-smit/quizroulette-spring-cloud-api-gateway
Please check your configuration carefully, it should be your configuration that caused multiple values, refer to this
The 'Access-Control-Allow-Origin' header contains multiple values
Maybe you can debug your code and find out where 'Access-Control-Allow-Origin' becomes two values.
Anyone Please Help me I need to submit my project this week I am getting a problem for a week.
Error is :-->
Access to XMLHttpRequest at 'http://127.0.0.1:8000/list/single/2' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Please Help me 😢
When you want to access the server from your react app it is called a Cross Origin request, by default a domain it is not allowed to access API hosted on another domain.
Your ReactJs app is on a port ( 3000 ) and your server on another and this cause this problem.
You have to enable CORS on your server.
You can try with :
pip install django-cors-headers
More on this you can find here
When I try to configure authentication of a registered web .Net Core app in Azure Active Directory by updating the redirect URLs I get a network error:
"Configuring your application registration
Network error: There is an issue establishing a connection to the service. Please refresh the browser to try again"
If I look into console I see CORS error:
"Access to XMLHttpRequest at 'https://graph.microsoft.com/v1.0/myorganization/applications/09bfef71-7a2b-4560-b2a2-947a4a16de0f' from origin 'https://portal.azure.com' has been blocked by CORS policy: Method PATCH is not allowed by Access-Control-Allow-Methods in preflight response."
See also attached image:
Check if you have any CORS extension installed on your browser. That was the case for me. I had this extention installed but once disabled I was able to save the changes
I couldn't call my service which gives an error
index.html:1 XMLHttpRequest cannot load http://localhost:14652/api/Employee. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:1873' is therefore not allowed access.
What should i do?
Your browser won't let you make this request because the Access-Control-Allow-Origin (necessary for a cross-domain request) is missing in the header of whatever send your api, if you just want to make some tests you can disable it on your browser by launching it with the following flags:
google-chrome --disable-web-security --allow-file-access-from-files
But you should really read this : http://www.eriwen.com/javascript/how-to-cors/ and have cors working on your server
I'm trying to make a request to a remote server running with Sails JS (NodeJS) using AngularJS in the frontend and I'm getting this origin 'null' error:
XMLHttpRequest cannot load http://remoteserver:1337/login/. The 'Access-Control-Allow-Origin' header contains the invalid value ''. Origin 'null' is therefore not allowed access.
My request looks somethign like:
$http.post('http://remoteserver:1337/login/', { email: userData.email, password: userData.password});
Any ideas?
You nead the server to enable CORS (cross origin resource sharing),
from Sails.js cors documentation (http://sailsjs.org/documentation/concepts/security/cors)
To allow cross-origin requests from any domain to any route in your app, simply enable allRoutes in config/cors.js:
allRoutes: true
and here is a brief explanation about what CORS is and why it is needed:
http://enable-cors.org/index.html