Hello,

I am using auth0 as external identity provider and authenticate frontend members. After login, I put the logic in returnUri page like this.

var result = await HttpContext.AuthenticateAsync(Auth0Constants.AuthenticationScheme);

        if (!result.Succeeded) throw new Exception("Missing external cookie");

        var email = result.Principal.FindFirstValue(ClaimTypes.Email)
                    ?? result.Principal.FindFirstValue("email")
                    ?? throw new Exception("Missing email claim");

        var user = await _memberManager.FindByEmailAsync(email);
        if (user == null)
        {
            _memberService.CreateMemberWithIdentity(email, email, email, Constants.Security.DefaultMemberTypeAlias);

            user = await _memberManager.FindByNameAsync(email);
            await _memberManager.AddToRolesAsync(user, new[] { "User" });
        }

        await HttpContext.SignOutAsync(Auth0Constants.AuthenticationScheme);
        await _memberSignInManager.SignInAsync(user, false);

I thought the auth0 cookie has been clean up and umbraco user has been logined. But got the error of "Unable to convert user ID (google-oauth2|*)to int using InvariantCulture" when calling memberManager.GetCurrentMemberAsync. It seems the memberManager still hold the external login schema?

Any ideas will be appreciated.