diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 6f110512d..7beae0fc6 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -41,7 +41,9 @@ extends:
         enabled: true
     pool:
       name: NetCore1ESPool-Svc-Internal
-      image: 1es-windows-2019
+      demands:
+      - ImageOverride -equals windows.vs2019.amd64
+      - ImageVersionOverride -equals 2026.0304.014948
       os: windows
     stages:
     - stage: build
diff --git a/build.cmd b/build.cmd
index 5802269fe..b6d145dff 100644
--- a/build.cmd
+++ b/build.cmd
@@ -37,10 +37,10 @@ if not DEFINED InstallDir (
   goto BuildFail
 )
 
-REM Find a 64bit MSBuild and add it to path. Require v17.4 or later due to our .NET SDK choice.
+REM Find a 64bit MSBuild and add it to path. Require v17.8.3 or later due to our .NET SDK choice.
 REM Check for VS2022 first.
 set InstallDir=
-for /f "usebackq tokens=*" %%i in (`%vswhere% -version 17.4 -latest -prerelease -products * ^
+for /f "usebackq tokens=*" %%i in (`%vswhere% -version 17.8.3 -latest -prerelease -products * ^
     -requires Microsoft.Component.MSBuild ^
     -property installationPath`) do (
   set "InstallDir=%%i"
@@ -52,10 +52,36 @@ if DEFINED InstallDir (
   goto FoundMSBuild
 )
 
+REM VS2022 with MSBuild v17.8.3+ not found. Check for standalone MSBuild SDK.
+set "StandaloneSdkBase=C:\msbuild-standalone\sdk"
+set "StandaloneMSBuildDir="
+echo "Looking in msbuild-standalone dir"
+if exist "%StandaloneSdkBase%" (
+  for /f "delims=" %%d in ('dir /b /ad /o-n "%StandaloneSdkBase%"') do (
+    echo "Looking in %StandaloneSdkBase%\%%d\MSBuild.dll"
+    if exist "%StandaloneSdkBase%\%%d\MSBuild.dll" (
+      set "StandaloneMSBuildDir=%StandaloneSdkBase%\%%d"
+      goto CheckStandaloneVersion
+    )
+  )
+)
+goto SkipStandalone
+
+:CheckStandaloneVersion
+echo "Checking standalone version"
+for /f "usebackq tokens=*" %%v in (`dotnet exec "%StandaloneMSBuildDir%\MSBuild.dll" -nologo -version`) do set "MSBuildVer=%%v"
+PowerShell -NoProfile -NoLogo -Command "if ([version]'%MSBuildVer%' -ge [version]'17.8.3') { exit 0 } else { exit 1 }"
+if not errorlevel 1 (
+  set "PATH=%StandaloneMSBuildDir%;%PATH%"
+  goto FoundMSBuild
+)
+
+:SkipStandalone
+
 REM Otherwise find or install an xcopy-able MSBuild.
 echo "Could not find a VS2022 installation with the necessary components (MSBuild). Falling back..."
 
-set "MSBuildVersion=17.4.1"
+set "MSBuildVersion=17.8.5"
 set "Command=[System.Threading.Thread]::CurrentThread.CurrentCulture = ''"
 set "Command=%Command%; [System.Threading.Thread]::CurrentThread.CurrentUICulture = ''"
 set "Command=%Command%; try { & '%~dp0eng\GetXCopyMSBuild.ps1' %MSBuildVersion%; exit $LASTEXITCODE }"
diff --git a/eng/templates/default-build.yml b/eng/templates/default-build.yml
index 7000a4dad..b76d242c3 100644
--- a/eng/templates/default-build.yml
+++ b/eng/templates/default-build.yml
@@ -8,7 +8,9 @@ jobs:
   ${{ if eq(variables['System.TeamProject'], 'public') }}:
     pool:
       name: NetCore-Svc-Public
-      demands: ImageOverride -equals windows.vs2019.amd64.open
+      demands:
+      - ImageOverride -equals windows.vs2019.amd64.open
+      - ImageVersionOverride -equals 2026.0304.014948
   timeoutInMinutes: 30
 
   strategy:
diff --git a/global.json b/global.json
index 0f75e8a6f..fa8b53441 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "6.0.405",
+    "version": "8.0.413",
     "rollForward": "major"
   }
 }
diff --git a/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj b/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj
index d22704250..f371bab19 100644
--- a/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj
+++ b/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
-    <TargetFrameworks>net462;netcoreapp2.1;net6.0</TargetFrameworks>
+    <TargetFrameworks>net462;netcoreapp2.1;net8.0</TargetFrameworks>
     <Configurations>$(Configurations);CodeAnalysis</Configurations>
     <DefineConstants
         Condition=" '$(Testing_NetStandard1_3)' == 'true' ">$(DefineConstants);Testing_NetStandard1_3</DefineConstants>
diff --git a/test/System.Net.Http.Formatting.Test/ByteRangeStreamContentTest.cs b/test/System.Net.Http.Formatting.Test/ByteRangeStreamContentTest.cs
index 410fc2b24..7dbed8f7d 100644
--- a/test/System.Net.Http.Formatting.Test/ByteRangeStreamContentTest.cs
+++ b/test/System.Net.Http.Formatting.Test/ByteRangeStreamContentTest.cs
@@ -127,7 +127,8 @@ public void Ctor_ThrowsOnNullMediaTypeString()
                 range: range,
                 mediaType: (String)null,
                 bufferSize: 128),
-                "mediaType");
+                "mediaType",
+                allowDerivedExceptions: true);
         }
 
         [Fact]
diff --git a/test/System.Net.Http.Formatting.ns1_3.Test/System.Net.Http.Formatting.ns1_3.Test.csproj b/test/System.Net.Http.Formatting.ns1_3.Test/System.Net.Http.Formatting.ns1_3.Test.csproj
index cfd42c053..74c763d46 100644
--- a/test/System.Net.Http.Formatting.ns1_3.Test/System.Net.Http.Formatting.ns1_3.Test.csproj
+++ b/test/System.Net.Http.Formatting.ns1_3.Test/System.Net.Http.Formatting.ns1_3.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
-    <TargetFrameworks>net462;netcoreapp2.1;net6.0</TargetFrameworks>
+    <TargetFrameworks>net462;netcoreapp2.1;net8.0</TargetFrameworks>
     <RootNamespace>System.Net.Http</RootNamespace>
     <OutputPath>..\..\bin\$(Configuration)\Test\ns1_3\</OutputPath>
     <Configurations>$(Configurations);CodeAnalysis</Configurations>
diff --git a/test/System.Net.Http.Formatting.ns2_0.Test/System.Net.Http.Formatting.ns2_0.Test.csproj b/test/System.Net.Http.Formatting.ns2_0.Test/System.Net.Http.Formatting.ns2_0.Test.csproj
index 8c7958b39..31a0b9548 100644
--- a/test/System.Net.Http.Formatting.ns2_0.Test/System.Net.Http.Formatting.ns2_0.Test.csproj
+++ b/test/System.Net.Http.Formatting.ns2_0.Test/System.Net.Http.Formatting.ns2_0.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
-    <TargetFrameworks>net462;netcoreapp2.1;net6.0</TargetFrameworks>
+    <TargetFrameworks>net462;netcoreapp2.1;net8.0</TargetFrameworks>
     <RootNamespace>System.Net.Http</RootNamespace>
     <OutputPath>..\..\bin\$(Configuration)\Test\ns2_0\</OutputPath>
     <Configurations>$(Configurations);CodeAnalysis</Configurations>