Blazor throwing error when using HttpContext

I want to get current windows user name when user opens the website. My application uses Blazor server-side. To get current username, I added:

1. In startup.cs:
   services.AddHttpContextAccessor(); (underConfigureServices)
2. In razor page:
   @inject IHttpContextAccessor httpContextAccessor
3. In razor page method:
   string userName = httpContextAccessor.HttpContext.User.Identity.Name;

When I execute the code, the application throws an exception:

"An error has occurred. This application may no longer respond until reloaded."

I get this error only when I deploy on IIS. On local machine it works well.