Rolled back to net6.0 as target framework because autorest uses net6 to build commandlets

Author: Microsoft Graph DevX Tooling

src/Authentication/Authentication.Core/Microsoft.Graph.Authentication.Core.csproj

@@ -2,9 +2,11 @@
   <Import Project="$(MSBuildThisFileDirectory)..\..\..\Repo.props" />
   <PropertyGroup>
     <LangVersion>9.0</LangVersion>
-    <TargetFrameworks>netstandard2.0;net472;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0;net472</TargetFrameworks>
     <RootNamespace>Microsoft.Graph.PowerShell.Authentication.Core</RootNamespace>
     <Version>2.25.0</Version>
+    <!-- Suppress .NET Target Framework Moniker (TFM) Support Build Warnings -->
+    <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
   </PropertyGroup>
   <PropertyGroup>
     <EnableNETAnalyzers>true</EnableNETAnalyzers>

src/Authentication/Authentication.Core/Utilities/AuthenticationHelpers.cs

@@ -60,7 +60,8 @@ private static async Task<TokenCredential> GetEnvironmentCredentialAsync(IAuthCo
         {
             if (authContext is null)
                 throw new AuthenticationException(ErrorConstants.Message.MissingAuthContext);
-
+            //There is need for explicitly adding TenantId to the TokenCredentialOptions for EnvironmentCredential due to stricter security requirements.
+            authContext.TenantId = EnvironmentVariables.TenantId;
             var tokenCredentialOptions = new TokenCredentialOptions
             {
                 AuthorityHost = new Uri(GetAuthorityUrl(authContext))

src/Authentication/Authentication.Test/Microsoft.Graph.Authentication.Test.csproj

@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net472</TargetFrameworks>
+    <TargetFrameworks>net6.0;net472</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <Version>2.25.0</Version>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.2" />
     <!-- As described in this post https://devblogs.microsoft.com/powershell/depending-on-the-right-powershell-nuget-package-in-your-net-project, reference the SDK for dotnetcore-->
-    <PackageReference Include="Microsoft.PowerShell.SDK" Version="7.5.0" PrivateAssets="all" Condition="'$(TargetFramework)' == 'net8.0'" />
+    <PackageReference Include="Microsoft.PowerShell.SDK" Version="7.5.0" PrivateAssets="all" Condition="'$(TargetFramework)' == 'net6.0'" />
     <PackageReference Include="Moq" Version="4.20.70" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">

src/Authentication/Authentication/build-module.ps1

@@ -8,7 +8,7 @@ $ErrorActionPreference = 'Stop'
 $ModuleName = "Authentication"
 $ModulePrefix = "Microsoft.Graph"
 $netStandard = "netstandard2.0"
-$netApp = "net8.0"
+$netApp = "net6.0"
 $netFx = "net472"
 $copyExtensions = @('.dll', '.pdb')