1. 确保Identity Server的配置正确，并且.well-known/openid-configuration在Identity Server的配置文件中被正确地指定。
2. 在Blazor WASM应用程序的Startup.cs文件中，确保已正确配置添加IdentityServer：

services.AddAuthentication(options =>
{
    options.DefaultScheme = "cookie";
    options.DefaultChallengeScheme = "oidc";
})
.AddCookie("cookie")
.AddOpenIdConnect("oidc", options =>
{
    options.Authority = "https://localhost:5001"; // replace with the Url of your Identity Provider
    options.ClientId = "blazorwasm";
    options.ResponseType = "code";
    options.UsePkce = true;
    options.Scope.Clear();
    options.Scope.Add("openid");
    options.Scope.Add("profile");
    options.Scope.Add("email");
    options.SaveTokens = true;
});

3. 确认Blazor WASM前端应用程序包含@using Microsoft.AspNetCore.Components.WebAssembly.Authentication和元素：

@using Microsoft.AspNetCore.Components.WebAssembly.Authentication
@using Microsoft.AspNetCore.Components.WebAssembly.Authentication.Internal



// … other content …

4. 重启Blazor WASM应用程序，并尝试进行身份验证，以确保.well-known/openid-configuration被正确地加载。