.net core api + windows authentication

In your ASP.NET Core project, add the Microsoft.AspNetCore.Authentication.Negotiate NuGet package.
In your Startup.cs file, add the following lines of code to the ConfigureServices method:
```
services.AddAuthentication(NegotiateDefaults.AuthenticationScheme).AddNegotiate();
```
This configures the authentication middleware to use Negotiate authentication.
In the Configure method, add the following line of code:
```
app.UseAuthentication();
```
This adds the authentication middleware to the middleware pipeline.

In your controller or action method, you can access the user's Windows identity using the User.Identity property.

To open the Windows login prompt for another API call, you can use the HttpClientHandler class to create a new instance of the HttpClient with Windows authentication enabled. Here's an example:

using (var handler = new HttpClientHandler { UseDefaultCredentials = true })
{
    using (var client = new HttpClient(handler))
    {
        var response = await client.GetAsync("http://example.com/api/endpoint");
        // Handle response
    }
}

2 Replies

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Vishal Yelve3y ago
Hi Sree,

Do refer below link

https://www.c-sharpcorner.com/article/configure-windows-authentication-in-asp-net-core/

https://damienbod.com/2021/04/26/securing-an-asp-net-core-app-and-web-api-using-windows-authentication/
Amit Mohanty3y ago
1. In your ASP.NET Core project, add the Microsoft.AspNetCore.Authentication.Negotiate NuGet package.
2. In your Startup.cs file, add the following lines of code to the ConfigureServices method:
  
  services.AddAuthentication(NegotiateDefaults.AuthenticationScheme).AddNegotiate();
  
  This configures the authentication middleware to use Negotiate authentication.
3. In the Configure method, add the following line of code:
  app.UseAuthentication();
  
  This adds the authentication middleware to the middleware pipeline.
In your controller or action method, you can access the user's Windows identity using the User.Identity property.

To open the Windows login prompt for another API call, you can use the HttpClientHandler class to create a new instance of the HttpClient with Windows authentication enabled. Here's an example:
```
using (var handler = new HttpClientHandler { UseDefaultCredentials = true })
{
    using (var client = new HttpClient(handler))
    {
        var response = await client.GetAsync("http://example.com/api/endpoint");
        // Handle response
    }
}
```