# \#callback **URL:** https://community.auth0.com/tag/callback/482.md [Latest](https://community.auth0.com/latest.md) · [Categories](https://community.auth0.com/categories.md) · [Tags](https://community.auth0.com/tags.md) --- ## [Auth0 PHP SDK: Invalid state](https://community.auth0.com/t/auth0-php-sdk-invalid-state/85200)
**Author:** [@pitsnthings](https://community.auth0.com/u/pitsnthings)\ **Replies:** 7\ **Last updated:** [January 30, 2024, 3:49pm UTC](https://community.auth0.com/t/auth0-php-sdk-invalid-state/85200 "2024-01-30T15:49:36Z")
I know this problem may have been discussed a lot in these forums but I can’t seem to find an answer that fixes this problem. I’m using the auth0 PHP SDK and am using a lot of the code from the quickstart guide for PHP. … --- ## [Working of Allowed Callback url](https://community.auth0.com/t/working-of-allowed-callback-url/87036)
**Author:** [@aswin36985](https://community.auth0.com/u/aswin36985)\ **Replies:** 1\ **Last updated:** [July 16, 2022, 12:07am UTC](https://community.auth0.com/t/working-of-allowed-callback-url/87036 "2022-07-16T00:07:24Z")
i have been using auth0 since a week. i have worked on the sample project without knowing much about the working of auth0. can anyone tell me what is callback and how the defined URl in the allowed callback url works? --- ## [Mismatching error while using auth in Nextjs](https://community.auth0.com/t/mismatching-error-while-using-auth-in-nextjs/84649)
**Author:** [@Emmanueluzoezie](https://community.auth0.com/u/Emmanueluzoezie)\ **Replies:** 4\ **Last updated:** [June 10, 2022, 6:07pm UTC](https://community.auth0.com/t/mismatching-error-while-using-auth-in-nextjs/84649 "2022-06-10T18:07:24Z")
\*\*"error": { "message": "Callback URL mismatch. https://'http://localhost:3000'/api/auth/callback is not in the list of allowed callback URLs", "oauthError": "Callback URL mismatch. https://'http://localho… --- ## [Callback URL mismatch http and https. “is not in the list of allowed callback URLs”](https://community.auth0.com/t/callback-url-mismatch-http-and-https-is-not-in-the-list-of-allowed-callback-urls/84252)
**Author:** [@fandorine77](https://community.auth0.com/u/fandorine77)\ **Replies:** 3\ **Last updated:** [June 7, 2022, 3:14pm UTC](https://community.auth0.com/t/callback-url-mismatch-http-and-https-is-not-in-the-list-of-allowed-callback-urls/84252 "2022-06-07T15:14:01Z")
Hi there! I have a Blazor Server app which I’ve deployed to Heroku via Docker. This is my app’s url https://my-app.herokuapp.com. In Allowed Callback URLs in my Auth0 app settings I have this callback url: https://my-ap… --- ## [Wildcard for callback urls](https://community.auth0.com/t/wildcard-for-callback-urls/82962)
**Author:** [@vignesh.jeyaraman](https://community.auth0.com/u/vignesh.jeyaraman)\ **Replies:** 10\ **Last updated:** [May 31, 2022, 7:56pm UTC](https://community.auth0.com/t/wildcard-for-callback-urls/82962 "2022-05-31T19:56:12Z")
Hey guys, We are implementing auth0 in our project and it is working real nice but the problem we are facing is with list of callback URLs. We have a flow where we first it in a demo and each demo has a different id and… --- ## [Failed Social Login - Callback Error?](https://community.auth0.com/t/failed-social-login-callback-error/79638)
**Author:** [@patrick12](https://community.auth0.com/u/patrick12)\ **Replies:** 3\ **Last updated:** [March 18, 2022, 8:08pm UTC](https://community.auth0.com/t/failed-social-login-callback-error/79638 "2022-03-18T20:08:07Z")
Hi, I have a strange problem regarding Google Social login (username-password combination works fine). When I try to login with google social login I just get the “Oops something went wrong” Screen. In the console logs… --- ## [Callback URL Mismatch for localhost](https://community.auth0.com/t/callback-url-mismatch-for-localhost/78870)
**Author:** [@romand](https://community.auth0.com/u/romand)\ **Replies:** 1\ **Last updated:** [February 24, 2022, 11:54pm UTC](https://community.auth0.com/t/callback-url-mismatch-for-localhost/78870 "2022-02-24T23:54:39Z")
Hello! I’m getting this error page for my callback url, but I’ve listed http://localhost:3000 exactly as such in my settings --- ## [502 error when hitting auth/login](https://community.auth0.com/t/502-error-when-hitting-auth-login/72161)
**Author:** [@keithg](https://community.auth0.com/u/keithg)\ **Replies:** 8\ **Last updated:** [November 2, 2021, 12:56am UTC](https://community.auth0.com/t/502-error-when-hitting-auth-login/72161 "2021-11-02T00:56:10Z")
I have a hosted website running nextjs and am using the nextjs-auth0 module for authentication. This was working fine but hitting auth/login (initially through Google SSO) using a particular browser session results in a … --- ## [State parameter missing from callback](https://community.auth0.com/t/state-parameter-missing-from-callback/64006)
**Author:** [@tyrone.erasmus](https://community.auth0.com/u/tyrone.erasmus)\ **Replies:** 2\ **Last updated:** [June 25, 2021, 11:50am UTC](https://community.auth0.com/t/state-parameter-missing-from-callback/64006 "2021-06-25T11:50:07Z")
When logging into our site, our users sometimes hit our callback page from Auth0 and don’t get redirected onwards. On closer inspection of why this could be happening, the code looks as follows: if ( window.loca… --- ## [BadRequest: checks.state argument is missing auth0/nextjs](https://community.auth0.com/t/badrequest-checks-state-argument-is-missing-auth0-nextjs/61843)
**Author:** [@discrete.dev](https://community.auth0.com/u/discrete.dev)\ **Replies:** 7\ **Last updated:** [May 28, 2021, 9:05am UTC](https://community.auth0.com/t/badrequest-checks-state-argument-is-missing-auth0-nextjs/61843 "2021-05-28T09:05:25Z")
Please include the following information in your post: Which SDK this is regarding: @auth0/nextjs-auth0 SDK Version: 1.3.0 Platform Version: next: 10.1.3, Node: 15.13.0 Code Snippets/Error Messages/Supporting Detai… --- ## [Forwarding callback request to the API causes TokenError](https://community.auth0.com/t/forwarding-callback-request-to-the-api-causes-tokenerror/29283)
**Author:** [@michaelfarnik](https://community.auth0.com/u/michaelfarnik)\ **Replies:** 1\ **Last updated:** [February 8, 2021, 10:07pm UTC](https://community.auth0.com/t/forwarding-callback-request-to-the-api-causes-tokenerror/29283 "2021-02-08T22:07:32Z")
My Auth0 setup was working fine but then I found out it wasn’t suitable for production. The problem was that the front end and back end are on the same domain so when Auth0 redirected the user to the callback, the front … --- ## [Callback error regularly occurring when app published to GCP](https://community.auth0.com/t/callback-error-regularly-occurring-when-app-published-to-gcp/28598)
**Author:** [@rebro5](https://community.auth0.com/u/rebro5)\ **Replies:** 2\ **Last updated:** [October 31, 2020, 5:27am UTC](https://community.auth0.com/t/callback-error-regularly-occurring-when-app-published-to-gcp/28598 "2020-10-31T05:27:25Z")
Hi there, I’m building an ASPNET core app (MVC) that gets published to Google Cloud App Engine (GCP). Everything works well on my local dev machine, but when published to the cloud about 1/2 the time the request works … --- ## [Use user and context information after return callback(null, user, context)](https://community.auth0.com/t/use-user-and-context-information-after-return-callback-null-user-context/52075)
**Author:** [@tareaslenguaje2](https://community.auth0.com/u/tareaslenguaje2)\ **Replies:** 1\ **Last updated:** [October 25, 2020, 10:27am UTC](https://community.auth0.com/t/use-user-and-context-information-after-return-callback-null-user-context/52075 "2020-10-25T10:27:37Z")
Hi, I have a rule and I want to redirect like the example With this I want to use user information and context information on the page that I redirect. This rule is used on a React project and Nodejs Express Proj… --- ## [Callback is not working when logging in](https://community.auth0.com/t/callback-is-not-working-when-logging-in/46924)
**Author:** [@anygamecounter](https://community.auth0.com/u/anygamecounter)\ **Replies:** 9\ **Last updated:** [July 31, 2020, 12:56pm UTC](https://community.auth0.com/t/callback-is-not-working-when-logging-in/46924 "2020-07-31T12:56:50Z")
So to start off, the only thing I changed was I renewed my sites certificate and I then noticed that I’m not able to log in to the site using Auth0. I did not change anything related to the Auth0 coding in my applicatio… --- ## [Navigation to website returns 'Unauthorized' rather than redirect to auth0 login page](https://community.auth0.com/t/navigation-to-website-returns-unauthorized-rather-than-redirect-to-auth0-login-page/18933)
**Author:** [@rjlafazan](https://community.auth0.com/u/rjlafazan)\ **Replies:** 4\ **Last updated:** [January 7, 2019, 2:08pm UTC](https://community.auth0.com/t/navigation-to-website-returns-unauthorized-rather-than-redirect-to-auth0-login-page/18933 "2019-01-07T14:08:25Z")
I think I am having an issue with the callback urls or maybe I’m missing something… I built a gitbook with Auth0 using gitbook-express-auth0-boilerplate. When I navigate to localhost:4001, it returns ‘Unauthorized’ the … --- ## [React Web App Callback Fails Using iOS](https://community.auth0.com/t/react-web-app-callback-fails-using-ios/7682)
**Author:** [@legends200](https://community.auth0.com/u/legends200)\ **Replies:** 1\ **Last updated:** [March 1, 2018, 1:59am UTC](https://community.auth0.com/t/react-web-app-callback-fails-using-ios/7682 "2018-03-01T01:59:19Z")
Following the example from the Auth0 repo: auth0-react-samples: https://github.com/auth0-samples/auth0-react-samples/tree/master/04-Authorization I have modified the server so the react files are served from the node s… --- ## ["504 Gateway Time-out" on all tenants trying to call https://\*.eu.auth0.com/login/callback](https://community.auth0.com/t/504-gateway-time-out-on-all-tenants-trying-to-call-https-eu-auth0-com-login-callback/9416)
**Author:** [@dyau](https://community.auth0.com/u/dyau)\ **Replies:** 11\ **Last updated:** [February 6, 2018, 10:51pm UTC](https://community.auth0.com/t/504-gateway-time-out-on-all-tenants-trying-to-call-https-eu-auth0-com-login-callback/9416 "2018-02-06T22:51:34Z")
We don’t have a hosted login page enabled for from around 12 noon GMT (~1 hour) ago we are unable to login to our applications. This has suddenly effected all our Auth0 tenants. Further digging, if we delete the auth0 … --- ## [Cannot GET /android/{name}/callback for second time](https://community.auth0.com/t/cannot-get-android-name-callback-for-second-time/8568)
**Author:** [@wwilczynski](https://community.auth0.com/u/wwilczynski)\ **Replies:** 2\ **Last updated:** [January 31, 2018, 8:25am UTC](https://community.auth0.com/t/cannot-get-android-name-callback-for-second-time/8568 "2018-01-31T08:25:03Z")
Hi. I use WebAuthProvider. Without connection it work great, login by facebook or google work fine. When I add withConnection I have problem. For google I use “google-oauth2”, an each time I gen screen with comunicate … --- ## [Auth0 callback fails randomly in iOS](https://community.auth0.com/t/auth0-callback-fails-randomly-in-ios/7722)
**Author:** [@ilkka](https://community.auth0.com/u/ilkka)\ **Replies:** 2\ **Last updated:** [December 14, 2017, 5:38am UTC](https://community.auth0.com/t/auth0-callback-fails-randomly-in-ios/7722 "2017-12-14T05:38:28Z")
Hi, Our React Native Expo app is using Auth0.com and authentication works well in Android, and in most of the iOS devices. However, some iOS devices authentication stops with both Facebook and Google login to attached s… --- ## [Shiny Auth0 /reports link callback](https://community.auth0.com/t/shiny-auth0-reports-link-callback/8931)
**Author:** [@fouad.oualid](https://community.auth0.com/u/fouad.oualid)\ **Replies:** 2\ **Last updated:** [December 11, 2017, 11:39pm UTC](https://community.auth0.com/t/shiny-auth0-reports-link-callback/8931 "2017-12-11T23:39:18Z")
Hi there, Shiny Auth0 always callback to (example.com/reports) Is there a way to make it callback to example.com only? we tried with the index.js on node js but without success. --- ## [Phonegap Authorisation Error On Callback](https://community.auth0.com/t/phonegap-authorisation-error-on-callback/8774)
**Author:** [@ellissutehall](https://community.auth0.com/u/ellissutehall)\ **Replies:** 4\ **Last updated:** [November 30, 2017, 12:08am UTC](https://community.auth0.com/t/phonegap-authorisation-error-on-callback/8774 "2017-11-30T00:08:02Z")
I’m building a mobile application with Phonegap and Framework7. I am attempting to add user authentication with Auth0 having followed the tutorials here and and here. I have the InAppBrowser and all auth0 files installe… --- ## [After being redirected from AUTH0\_DOMAIN/authorize to callback I get token but only in CALLBACK\_URL#access\_token=TOKEN form](https://community.auth0.com/t/after-being-redirected-from-auth0-domain-authorize-to-callback-i-get-token-but-only-in-callback-url-access-token-token-form/8739)
**Author:** [@malekpatryk\_auth0](https://community.auth0.com/u/malekpatryk_auth0)\ **Replies:** 1\ **Last updated:** [November 14, 2017, 7:55pm UTC](https://community.auth0.com/t/after-being-redirected-from-auth0-domain-authorize-to-callback-i-get-token-but-only-in-callback-url-access-token-token-form/8739 "2017-11-14T19:55:10Z")
I am trying out social login with Auth0 (here with Github) and after going to https://AUTH\_DOMAIN/authorize?client\_id=CLIENT\_ID&response\_type=token&redirect\_uri=http://localhost:3001/api/private I get redirected through … --- ## [Hook - Code generated an uncaught exception: Error: Callback was already called](https://community.auth0.com/t/hook-code-generated-an-uncaught-exception-error-callback-was-already-called/8722)
**Author:** [@xie.williams](https://community.auth0.com/u/xie.williams)\ **Replies:** 3\ **Last updated:** [November 13, 2017, 11:16pm UTC](https://community.auth0.com/t/hook-code-generated-an-uncaught-exception-error-callback-was-already-called/8722 "2017-11-13T23:16:22Z")
I’m using a Client Credentials Exchange hook, and while it’s functioning correctly I’m seeing this error in the logs: Code generated an uncaught exception: Error: Callback was already called. Here’s the hook, note ther… --- ## [Unauthorized token callback failed to load .... server status 500](https://community.auth0.com/t/unauthorized-token-callback-failed-to-load-server-status-500/8284)
**Author:** [@ziedchekir1](https://community.auth0.com/u/ziedchekir1)\ **Replies:** 0\ **Last updated:** [September 25, 2017, 1:58am UTC](https://community.auth0.com/t/unauthorized-token-callback-failed-to-load-server-status-500/8284 "2017-09-25T01:58:34Z")
i need to add an authentication systen in web app and i choosed auth0. i worked with it one year ago and everything was ok and i liked it. but there was a separation between backend code and front end code where i custo… --- ## [PHP - Callback page - $auth0-\>getUser() is null](https://community.auth0.com/t/php-callback-page-auth0-getuser-is-null/7110)
**Author:** [@thibaudchriste1997](https://community.auth0.com/u/thibaudchriste1997)\ **Replies:** 2\ **Last updated:** [August 31, 2017, 11:02am UTC](https://community.auth0.com/t/php-callback-page-auth0-getuser-is-null/7110 "2017-08-31T11:02:55Z")
Hi, I have a little problem .. I made a web app in PHP. I tried to made a login system with auth0. But when i call my callback page my $auth0-\>getUser() return null. And I don’t know why ? Can you help me ? My index.… --- ## [Auth0 Integration Callback Error](https://community.auth0.com/t/auth0-integration-callback-error/7529)
**Author:** [@nick2](https://community.auth0.com/u/nick2)\ **Replies:** 1\ **Last updated:** [July 17, 2017, 8:01am UTC](https://community.auth0.com/t/auth0-integration-callback-error/7529 "2017-07-17T08:01:05Z")
Current using ASP.NET with Auth0.js, I’m encountering an issue with the Logincallback redirect . Using localhost just to debug an application, I’m getting everything that should occur like the Auth0 Widget, then get prom… --- ## [Callback from auth0 contains no parameters](https://community.auth0.com/t/callback-from-auth0-contains-no-parameters/7380)
**Author:** [@dbeshkov](https://community.auth0.com/u/dbeshkov)\ **Replies:** 1\ **Last updated:** [July 5, 2017, 5:59pm UTC](https://community.auth0.com/t/callback-from-auth0-contains-no-parameters/7380 "2017-07-05T17:59:18Z")
Hi community! I am trying to implement the callback as explained here: Add Login Using the Authorization Code Flow - Auth0 Docs My problem: The request contains no query parameters, I cannot parse a “code” or “state”. …