Authentication with Azure Active Directory connected services missing in existing Asp.Net core application

Question

I have existing Asp.net core 2.0 application. I am trying to add Authentication with Azure Active Directory connected service to it. When I tried to right click on connected services and checked for Authentication with Azure Active Directory connected service, I did not find the option. I searched online and found that for existing asp.net core applications there is not connected service option. What will be the work around in this case? any hints?

Answer 1

You can try below steps :

1. Install the package : Microsoft.AspNetCore.Authentication.AzureAD.UI

2. Modify the Startup.cs to enable Azure AD Authentication:

   services.Configure<CookiePolicyOptions>(options =>
   {
       // This lambda determines whether user consent for non-essential cookies is needed for a given request.
       options.CheckConsentNeeded = context => true;
       options.MinimumSameSitePolicy = SameSiteMode.None;
   });
   
   services.AddAuthentication(AzureADDefaults.AuthenticationScheme)
       .AddAzureAD(options => Configuration.Bind("AzureAd", options));
   
   services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
   

3. Add the authentication middleware to Configure :

   app.UseAuthentication();
   

4. Modify the appsettings.json to add the Azure AD app settings

   {
   "AzureAd": {
       "Instance": "https://login.microsoftonline.com/",
       "Domain": "xxxxxxx.onmicrosoft.com",
       "TenantId": "xxxxxx-e83b-4099-93c2-8ae86358d05c",
       "ClientId": "xxxxxxxx-80c5-4bd4-ad6a-a967ea0066d6",
       "CallbackPath": "/signin-oidc"
   },
   "Logging": {
       "LogLevel": {
       "Default": "Warning"
       }
   },
   "AllowedHosts": "*"
   }
   

Another way is to config the OpenId Connect Middlerware manually , you can refer to below article :

https://joonasw.net/view/aspnet-core-2-azure-ad-authentication