Blazor Server + Azure B2C Identity - Change Cookie Name - cookies

Question

When creating a stock Blazor Server app (File/New) with Authentication for B2C you get a Startup.cs that looks like the following.
B2C itself is working, but I'm trying to simply change the Cookie name. By default it appears to be (.AspNetCore.AzureADB2CCookie)
How can I change it?
I've tried the following which doesn't appear to work:
1)
services.ConfigureApplicationCookie(options =>
{
options.Cookie.Name = UIConstants.WebSessionCookieName;
});
2)
.AddCookie(x =>
{
x.Cookie.Name = UIConstants.WebSessionCookieName;
});
Startup.cs
public void ConfigureServices(IServiceCollection services)
{
services.AddAuthentication(AzureADB2CDefaults.AuthenticationScheme)
.AddAzureADB2C(options => Configuration.Bind("AzureAdB2C", options));
services.AddRazorPages();
services.AddServerSideBlazor();
services.AddSingleton<WeatherForecastService>();
services.AddHttpContextAccessor();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
endpoints.MapBlazorHub();
endpoints.MapFallbackToPage("/_Host");
});
}

Answer 1

services.Configure<CookieAuthenticationOptions>(
AzureADB2CDefaults.CookieScheme, options =>
{
options.Cookie.Name = UIConstants.WebSessionCookieName;
});