# BFF Blazor Server Options

[Section titled âBFF Blazor Server Optionsâ](#bff-blazor-server-options)

In the Blazor Server, you configure the **BffBlazorServerOptions** by using the **AddBlazorServer** method.

```csharp
builder.Services.AddBlazorServer(opt =>
{
    // configure options here..
})
```

The following options are available:

* ***ServerStateProviderPollingInterval*** The delay, in milliseconds, between polling requests by the BffServerAuthenticationStateProvider to the /bff/user endpoint. Defaults to 5000 ms.