Hi @David Tarin , this could be caused by a number of reasons. Here are some things you can check:
- Make sure that the user account you are trying to sign in with is a member of the Azure AD B2C tenant. You can check this by going to the "Users" blade in the Azure portal and verifying that the user is listed there.
- Make sure that the user account has been assigned to the application that you registered in Azure AD B2C. You can check this by going to the "Enterprise applications" blade in the Azure portal and verifying that the user is listed there.
- Make sure that the user account has the correct sign-in credentials. If the user is signing in with a password, make sure that the password is correct. If the user is signing in with a social identity provider, make sure that the user has linked their social account to their Azure AD B2C account.
- Make sure that the user sign-in flow is configured correctly. Check that the user flow is enabled and that the correct identity providers are selected. Also, make sure that the redirect URI is correct and that it matches the URI that you specified when you registered your application.
- Check the Azure AD B2C logs for any error messages. You can view the logs by going to the "Diagnostic settings" blade in the Azure portal and selecting "Export to Log Analytics" or "Export to Event Hub".
If you are still having trouble, you can try testing the user sign-in flow with a different user account or creating a new user account to test with. You can also try testing the user sign-in flow with a different application to see if the issue is specific to your application.
Please let me know if you have any questions and I can help you further.
If this answer helps you please mark "Accept Answer" so other users can reference it.
Thank you,
James