iOS Application does not Recognize Auth0 Associated Domain

Knowledge Articles
1

Overview

This article will explain how to resolve instances where an iOS application does not recognize an Auth0-associated domain. The error associated with this issue looks like this:

Error Domain=com.apple.AuthenticationServices.WebAuthenticationSession Code=1 “Application with identifier [IDENTIFIER] is not associated with domain DOMAIN.us.auth0.com. Using HTTPS callbacks requires Associated Domains using the webcredentials service type for DOMAIN.us.auth0.com.” UserInfo={NSLocalizedFailureReason=Application with identifier [IDENTIFIER] is not associated with domain DOMAIN.us.auth0.com. Using HTTPS callbacks requires Associated Domains using the webcredentials service type for DOMAIN.us.auth0.com.}

Applies To

  • iOS
  • Associated Domains
  • Swift

Cause

There are two potential causes for this error.

  • If the issue seems to happen only when attempting a login or registration quickly after a fresh install of the app:
    • An Apple engineer has acknowledged the existence of an iOS bug regarding verifying the Associated Domain.
  • If the user waits a few seconds, the issue does not happen:
    • This is likely caused by a configuration or setup issue.

Solution

If the issue is the iOS bug, an Apple engineer has acknowledged the existence of an iOS bug regarding the verification of the Associated Domain. It should be fixed on iOS 18. See Bug: AASA file not fetched on app … | Apple Developer Forums

Please see if updating to iOS 18 solves your issue.

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If the issue does NOT fall into the above scenario, it is likely a matter of configuration or setup. Please verify the following:

  • Correctly set up the Associated Domain as described in GitHub - auth0/Auth0.swift: Auth0 SDK for Apple platforms
  • If using a custom domain, ensure it is correctly set up, both in the Auth0 dashboard and in the SDK configuration or setup.
  • If able to get it to work using the Auth0.swift sample app, as it has been verified to work during the development of Auth0.swift 2.6.0. it is very likely to be either a configuration/setup issue, or the caching/Xcode debugging issue described in this Github issue.

After verifying all of the above, please confirm if the issue persists.