Fresh Install of is4aspid template doesn't work with Google or Identity Auth about identityserver4.templates HOT 3 CLOSED

I'm going to guess it's related to the signin scheme you're using for google and how you're processing it on the external callback logic (meaning does it match).

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I saw some posts about that, so I had tried a few things there.

First I left everything defaulted thinking that it should just work that way, but it didn't. That was
leaving SignInScheme as it's default in AddGoogle and then in ExternalController, leaving AuthenticateAsync and SignoutAsync both using "IdentityConstants.ExternalScheme"

Second, in the working IdentityServer that did not use ASP.Net Core Identity, we used IdentityServer4.IdentityServerConstants.ExternalCookieAuthenticationScheme for all three (SignInScheme, AuthenticateAsync, and SignoutAsync) as was explained in the "Interactive Applications with ASP.NET Core" quickstart. That didn't work either.

Third, I had thought one of the first two would work, but they didn't, so I tried going back to using IdentityConstants.ExternalScheme for AuthenticateAsync and SignoutAsync, and then in AddGoogle, I explicitly set SignInScheme to also be IdentityConstants.ExternalScheme and that didn't work either.

Am I using the wrong scheme, or missing a place where the scheme needs to be set in one of the Startup.cs or ExternalController.cs?

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I think I am having a similar problem described in the issued I posted (#85).

I am starting the login process from an Angular 9 SPA using oidc-client-js and I am redirected to IS4 login page.
I choose to authenticate with Google being redirected to Google login where I have my consent ...
I am then redirected to External / Callback where there is a returnUrl to the SPA Client application.
However I end up being redirected back to IS4 login page and not SPA login callback.

Either I login with Username / Password or Google I am always successfully authenticated on IS4.

It is just that when using Google I am not redirected back to the SPA client to complete the process.

@breynolds Did you solve your problem? Thank you.

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