diff --git a/src/Services/Location/Locations.API/Infrastructure/Filters/AuthorizeCheckOperationFilter.cs b/src/Services/Location/Locations.API/Infrastructure/Filters/AuthorizeCheckOperationFilter.cs
index e4194daeb..e2d4c9aed 100644
--- a/src/Services/Location/Locations.API/Infrastructure/Filters/AuthorizeCheckOperationFilter.cs
+++ b/src/Services/Location/Locations.API/Infrastructure/Filters/AuthorizeCheckOperationFilter.cs
@@ -1,6 +1,6 @@
 
 using Microsoft.AspNetCore.Authorization;
-using Swashbuckle.AspNetCore.Swagger;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,7 +9,7 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API.Infrastructure.Filt
 {
     internal class AuthorizeCheckOperationFilter : IOperationFilter
     {
-        public void Apply(Operation operation, OperationFilterContext context)
+        public void Apply(OpenApiOperation operation, OperationFilterContext context)
         {
             // Check for authorize attribute
             var hasAuthorize = context.MethodInfo.DeclaringType.GetCustomAttributes(true).OfType<AuthorizeAttribute>().Any() ||
@@ -17,16 +17,21 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API.Infrastructure.Filt
 
             if (!hasAuthorize) return;
 
-            operation.Responses.TryAdd("401", new Response { Description = "Unauthorized" });
-            operation.Responses.TryAdd("403", new Response { Description = "Forbidden" });
+            operation.Responses.TryAdd("401", new OpenApiResponse() { Description = "Unauthorized" });
+            operation.Responses.TryAdd("403", new OpenApiResponse() { Description = "Forbidden" });
 
-            operation.Security = new List<IDictionary<string, IEnumerable<string>>>
+            var oAuthScheme = new OpenApiSecurityScheme
             {
-                new Dictionary<string, IEnumerable<string>>
-                {
-                    { "oauth2", new [] { "locationsapi" } }
-                }
+                Reference = new OpenApiReference { Type = ReferenceType.SecurityScheme, Id = "oauth2" }
             };
+
+            operation.Security = new List<OpenApiSecurityRequirement>
+                {
+                    new OpenApiSecurityRequirement
+                    {
+                        [ oAuthScheme ] = new [] { "locationsapi" }
+                    }
+                };
         }
     }
 }
diff --git a/src/Services/Location/Locations.API/Infrastructure/Filters/HttpGlobalExceptionFilter.cs b/src/Services/Location/Locations.API/Infrastructure/Filters/HttpGlobalExceptionFilter.cs
index 30b9df1fa..12cffe878 100644
--- a/src/Services/Location/Locations.API/Infrastructure/Filters/HttpGlobalExceptionFilter.cs
+++ b/src/Services/Location/Locations.API/Infrastructure/Filters/HttpGlobalExceptionFilter.cs
@@ -5,15 +5,16 @@
     using Microsoft.AspNetCore.Mvc.Filters;
     using Microsoft.eShopOnContainers.Services.Locations.API.Infrastructure.ActionResults;
     using Microsoft.eShopOnContainers.Services.Locations.API.Infrastructure.Exceptions;
+    using Microsoft.Extensions.Hosting;
     using Microsoft.Extensions.Logging;
     using System.Net;
 
     public class HttpGlobalExceptionFilter : IExceptionFilter
     {
-        private readonly IHostingEnvironment env;
+        private readonly IHostEnvironment env;
         private readonly ILogger<HttpGlobalExceptionFilter> logger;
 
-        public HttpGlobalExceptionFilter(IHostingEnvironment env, ILogger<HttpGlobalExceptionFilter> logger)
+        public HttpGlobalExceptionFilter(IHostEnvironment env, ILogger<HttpGlobalExceptionFilter> logger)
         {
             this.env = env;
             this.logger = logger;
diff --git a/src/Services/Location/Locations.API/Locations.API.csproj b/src/Services/Location/Locations.API/Locations.API.csproj
index 7f658ee2d..653b7b7b5 100644
--- a/src/Services/Location/Locations.API/Locations.API.csproj
+++ b/src/Services/Location/Locations.API/Locations.API.csproj
@@ -4,6 +4,7 @@
     <TargetFramework>$(NetCoreTargetVersion)</TargetFramework>
     <DockerComposeProjectPath>..\..\..\..\docker-compose.dcproj</DockerComposeProjectPath>
     <UserSecretsId>aspnet-Locations.API-20161122013619</UserSecretsId>
+    <LangVersion>$(LangVersion)</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="$(AspNetCore_HealthChecks_AzureServiceBus)" />
@@ -14,6 +15,7 @@
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="$(Microsoft_ApplicationInsights_AspNetCore)" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="$(Microsoft_ApplicationInsights_DependencyCollector)" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="$(Microsoft_ApplicationInsights_Kubernetes)" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="$(Microsoft_AspNetCore_Authentication_JwtBearer)" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="$(Microsoft_AspNetCore_Diagnostics_HealthChecks)" />
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="$(Microsoft_AspNetCore_HealthChecks)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="$(Microsoft_Extensions_Configuration_AzureKeyVault)" />
diff --git a/src/Services/Location/Locations.API/Startup.cs b/src/Services/Location/Locations.API/Startup.cs
index 4664381d0..cfb9d7e22 100644
--- a/src/Services/Location/Locations.API/Startup.cs
+++ b/src/Services/Location/Locations.API/Startup.cs
@@ -1,8 +1,6 @@
 using Autofac;
 using Autofac.Extensions.DependencyInjection;
 using HealthChecks.UI.Client;
-using Microsoft.ApplicationInsights.Extensibility;
-using Microsoft.ApplicationInsights.ServiceFabric;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Diagnostics.HealthChecks;
@@ -23,8 +21,8 @@ using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Diagnostics.HealthChecks;
 using Microsoft.Extensions.Logging;
+using Microsoft.OpenApi.Models;
 using RabbitMQ.Client;
-using Swashbuckle.AspNetCore.Swagger;
 using System;
 using System.Collections.Generic;
 using System.IdentityModel.Tokens.Jwt;
@@ -50,7 +48,7 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API
                 {
                     options.Filters.Add(typeof(HttpGlobalExceptionFilter));
                 })
-                .SetCompatibilityVersion(CompatibilityVersion.Version_2_2)
+                .SetCompatibilityVersion(CompatibilityVersion.Version_3_0)
                 .AddControllersAsServices();
 
             ConfigureAuthService(services);
@@ -99,7 +97,7 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API
 
                     return new DefaultRabbitMQPersistentConnection(factory, logger, retryCount);
                 });
-            }            
+            }
 
             RegisterEventBus(services);
 
@@ -107,23 +105,27 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API
             services.AddSwaggerGen(options =>
             {
                 options.DescribeAllEnumsAsStrings();
-                options.SwaggerDoc("v1", new Swashbuckle.AspNetCore.Swagger.Info
+                options.SwaggerDoc("v1", new OpenApiInfo
                 {
                     Title = "eShopOnContainers - Location HTTP API",
                     Version = "v1",
                     Description = "The Location Microservice HTTP API. This is a Data-Driven/CRUD microservice sample",
-                    TermsOfService = "Terms Of Service"
                 });
 
-                options.AddSecurityDefinition("oauth2", new OAuth2Scheme
+                options.AddSecurityDefinition("oauth2", new OpenApiSecurityScheme
                 {
-                    Type = "oauth2",
-                    Flow = "implicit",
-                    AuthorizationUrl = $"{Configuration.GetValue<string>("IdentityUrlExternal")}/connect/authorize",
-                    TokenUrl = $"{Configuration.GetValue<string>("IdentityUrlExternal")}/connect/token",
-                    Scopes = new Dictionary<string, string>()
+                    Type = SecuritySchemeType.OAuth2,
+                    Flows = new OpenApiOAuthFlows()
                     {
-                        { "locations", "Locations API" }
+                        Implicit = new OpenApiOAuthFlow()
+                        {
+                            AuthorizationUrl = new Uri($"{Configuration.GetValue<string>("IdentityUrlExternal")}/connect/authorize"),
+                            TokenUrl = new Uri($"{Configuration.GetValue<string>("IdentityUrlExternal")}/connect/token"),
+                            Scopes = new Dictionary<string, string>()
+                            {
+                                { "locations", "Locations API" }
+                            }
+                        }
                     }
                 });
 
@@ -204,12 +206,6 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API
                 // Enable K8s telemetry initializer
                 services.AddApplicationInsightsKubernetesEnricher();
             }
-            if (orchestratorType?.ToUpper() == "SF")
-            {
-                // Enable SF telemetry initializer
-                services.AddSingleton<ITelemetryInitializer>((serviceProvider) =>
-                    new FabricTelemetryInitializer());
-            }
         }
 
         private void ConfigureAuthService(IServiceCollection services)
diff --git a/src/_build/dependencies.props b/src/_build/dependencies.props
index 6a91b3f6a..e9a425ee8 100644
--- a/src/_build/dependencies.props
+++ b/src/_build/dependencies.props
@@ -3,7 +3,7 @@
     <NetStandardTargetVersion>netstandard2.1</NetStandardTargetVersion>
     <NetCoreTargetVersion>netcoreapp3.0</NetCoreTargetVersion>
     <MicrosoftNETTestSdkPackageVersion>15.8.0</MicrosoftNETTestSdkPackageVersion>
-    <LangVersion>latest</LangVersion>
+    <LangVersion>preview</LangVersion>
   </PropertyGroup>
 
   <PropertyGroup Label="Package Versions">
@@ -37,9 +37,11 @@
     <Microsoft_ApplicationInsights_DependencyCollector>2.6.1</Microsoft_ApplicationInsights_DependencyCollector>
     <Microsoft_ApplicationInsights_Kubernetes>1.0.2</Microsoft_ApplicationInsights_Kubernetes>
     <Microsoft_AspNetCore_Authentication_JwtBearer>3.0.0-preview6.19307.2</Microsoft_AspNetCore_Authentication_JwtBearer>
+    <Microsoft_AspNetCore_Authentication_OpenIdConnect>3.0.0-preview6.19307.2</Microsoft_AspNetCore_Authentication_OpenIdConnect>
     <Microsoft_AspNetCore_Diagnostics_HealthChecks>2.2.0</Microsoft_AspNetCore_Diagnostics_HealthChecks>
     <Microsoft_AspNetCore_HealthChecks>1.0.0</Microsoft_AspNetCore_HealthChecks>
     <Microsoft_AspNetCore_Http_Abstractions>2.2.0</Microsoft_AspNetCore_Http_Abstractions>
+    <Microsoft_AspNetCore_Mvc_Testing>3.0.0-preview6.19307.2</Microsoft_AspNetCore_Mvc_Testing>
     <Microsoft_AspNetCore_TestHost>3.0.0-preview6.19307.2</Microsoft_AspNetCore_TestHost>
     <Microsoft_Azure_ServiceBus>3.0.0</Microsoft_Azure_ServiceBus>
     <Microsoft_CSharp>4.5.0</Microsoft_CSharp>