AuthenticationProvider Issue with Entra ID

[fuegans4213]

Hello i'm facing issues usign the authProvider to use with my Kiota Client API,

i'm using a Blazor Server App ,

My authentication is buld like this :

builder.Services.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
    .AddMicrosoftIdentityWebApp(options =>
    {
        builder.Configuration.Bind("AzureAd", options);

        // Request a refresh_token.
        options.Scope.Add(OpenIdConnectScope.OfflineAccess);
        // Store the refresh_token.

        options.SaveTokens = true;


        options.Events.OnTokenValidated += eventArgs =>
        {
            Console.WriteLine("OnTokenValidated");
            var idToken = eventArgs.ProtocolMessage.IdToken;
            //Acces to the access_token from here ???
            return Task.CompletedTask;
        };

        options.SaveTokens = true;

    })
        .EnableTokenAcquisitionToCallDownstreamApi()
        .AddInMemoryTokenCaches();

I'm using a CustomTokenCredential configuration

    private readonly string _accessToken;

    public CustomTokenCredential(string accessToken)
    {
        _accessToken = accessToken;
    }

    public override AccessToken GetToken(TokenRequestContext requestContext, CancellationToken cancellationToken)
    {
        return new AccessToken(_accessToken, DateTimeOffset.UtcNow.AddHours(1));
    }

    public override async ValueTask<AccessToken> GetTokenAsync(TokenRequestContext requestContext, CancellationToken cancellationToken)
    {
        // Return the token asynchronously.
        return await Task.FromResult(new AccessToken(_accessToken, DateTimeOffset.UtcNow.AddHours(1)));
    }
}

But i m not able to connect using that DI configuration :

var tokenCredential = new CustomTokenCredential(AccesToken);

var provider = new AzureIdentityAuthenticationProvider(tokenCredential);
builder.Services.AddSingleton<IRequestAdapter, HttpClientRequestAdapter>(adapter =>
{
    var authProvider = new AzureIdentityAuthenticationProvider(tokenCredential);
    return new HttpClientRequestAdapter(authProvider)
    {
        BaseUrl = basePath,
    };
});

builder.Services.AddSingleton<MyClient>();

Could you help me resolve this or show me the proper way to approach it?