Blazor Server app with many requests make website unstable

I created Blazor server web app and I deployed on Azure App Service, and in Network tab I see alot of requests to https://mywebsites0123.azurewebsites.net/_blazor?id=3OO-T6L4Bu9bMRF8QAo_5Q&_=166722 and make application unstable.

On localhost (Debug and Release) I cannot find any request and application is working smooth.

I read this C# Blazor server - why so many _blazor requests and such memory consumption? but can't find solution.

The startup page looks like:

ConfigureServices(IServiceCollection services)

 services.AddRazorPages();
services.AddServerSideBlazor().AddMicrosoftIdentityConsentHandler();

services.AddSignalR(e =>
{
                e.MaximumReceiveMessageSize = 2000 * 1024;
});

// Radzen init
services.AddScoped<DialogService>();
services.AddScoped<TooltipService>();
services.AddScoped<NotificationService>();

services.AddMemoryCache();

var apiScope = Configuration["Authentication:ApiScope"];
services.AddMicrosoftIdentityWebAppAuthentication(Configuration, "Authentication:AzureAd")
.EnableTokenAcquisitionToCallDownstreamApi(new string[] { apiScope })
.AddInMemoryTokenCaches();

services.AddControllersWithViews().AddMicrosoftIdentityUI();
services.AddAuthorization();

and

Configure(IApplicationBuilder app, IWebHostEnvironment env)

if (env.IsDevelopment())
{
   app.UseDeveloperExceptionPage();
}
else
{
    app.UseExceptionHandler("/Error");
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();

app.UseAuthentication();
app.UseAuthorization();

app.UseEndpoints(endpoints =>
{
    endpoints.MapControllers();
    endpoints.MapBlazorHub();
    endpoints.MapFallbackToPage("/_Host");
});

I receive alot of requests:

After few seconds later:

And then number of requests continue to increase. Don't know why this happens when app is hosted on Azure app service.

Any tips to look for ?

Solution:

Enable on Azure AppService the WebSockets (by default is Off) described: https://learn.microsoft.com/en-us/aspnet/core/signalr/publish-to-azure-web-app?view=aspnetcore-6.0#configure-the-app-in-azure-app-service

Solution

Solution: