diff --git a/azure-pipelines-official.yml b/azure-pipelines-official.yml
index 442ad55ab2..cead0ee887 100644
--- a/azure-pipelines-official.yml
+++ b/azure-pipelines-official.yml
@@ -185,6 +185,8 @@ extends:
                   -performanceTest
                 name: Test
                 displayName: Test
+                env:
+                  DOTNET_ROOT: $(Build.SourcesDirectory)/.dotnet
 
               # This step is only helpful for diagnosing some issues with vstest/test host that would not appear
               # through the console or trx
@@ -239,6 +241,8 @@ extends:
                     --performanceTest
                   name: Test
                   displayName: Test
+                  env:
+                    DOTNET_ROOT: $(Build.SourcesDirectory)/.dotnet
 
                 # This step is only helpful for diagnosing some issues with vstest/test host that would not appear
                 # through the console or trx
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 541b35ce34..12258ef7b3 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -115,6 +115,8 @@ stages:
             /bl:$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)/Test.binlog
           name: Test
           displayName: Test
+          env:
+            DOTNET_ROOT: $(Build.SourcesDirectory)/.dotnet
 
         # This step is only helpful for diagnosing some issues with vstest/test host that would not appear
         # through the console or trx
@@ -189,6 +191,8 @@ stages:
             --performanceTest
           name: Test
           displayName: Test
+          env:
+            DOTNET_ROOT: $(Build.SourcesDirectory)/.dotnet
 
         # This step is only helpful for diagnosing some issues with vstest/test host that would not appear
         # through the console or trx
diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index 026fc232e1..71f7f04a6f 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -8,7 +8,7 @@ This file should be imported by eng/Versions.props
     <!-- _git/vs-code-coverage dependencies -->
     <MicrosoftInternalCodeCoveragePackageVersion>18.0.6</MicrosoftInternalCodeCoveragePackageVersion>
     <!-- dotnet/dotnet dependencies -->
-    <MicrosoftDiagnosticsNETCoreClientPackageVersion>0.2.0-preview.25479.115</MicrosoftDiagnosticsNETCoreClientPackageVersion>
+    <MicrosoftDiagnosticsNETCoreClientPackageVersion>0.2.0-preview.26077.113</MicrosoftDiagnosticsNETCoreClientPackageVersion>
     <!-- dotnet/runtime dependencies -->
     <MicrosoftExtensionsDependencyModelPackageVersion>6.0.2</MicrosoftExtensionsDependencyModelPackageVersion>
     <SystemComponentModelCompositionPackageVersion>4.5.0</SystemComponentModelCompositionPackageVersion>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index d9139b7d8e..f572c52b73 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
-  <Source Uri="https://github.com/dotnet/dotnet" Mapping="vstest" Sha="e72b5bbe719d747036ce9c36582a205df9f1c361" BarId="285185" />
+  <Source Uri="https://github.com/dotnet/dotnet" Mapping="vstest" Sha="74dc6e4ed64cc0255a6be520761a857dda273863" BarId="299030" />
   <ProductDependencies>
     <Dependency Name="Microsoft.Internal.CodeCoverage" Version="18.0.6" Pinned="true">
       <Uri>https://dev.azure.com/devdiv/DevDiv/_git/vs-code-coverage</Uri>
       <Sha>957aa737e42290c129a620df7129f03189743dd1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Diagnostics.NETCore.Client" Version="0.2.0-preview.25479.115">
+    <Dependency Name="Microsoft.Diagnostics.NETCore.Client" Version="0.2.0-preview.26077.113">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>e72b5bbe719d747036ce9c36582a205df9f1c361</Sha>
+      <Sha>74dc6e4ed64cc0255a6be520761a857dda273863</Sha>
     </Dependency>
     <!-- Necessary for source-build. This allows the live version of the package to be used by source-build. -->
     <Dependency Name="System.ComponentModel.Composition" Version="4.5.0">
diff --git a/global.json b/global.json
index 5ebef2be03..bc2eb8ed78 100644
--- a/global.json
+++ b/global.json
@@ -18,8 +18,8 @@
         "5.0.17",
         "6.0.32",
         "7.0.20",
-        "8.0.7",
-        "9.0.5"
+        "8.0.23",
+        "9.0.12"
       ],
       "dotnet/x86": [
         "2.1.30",
@@ -27,8 +27,8 @@
         "5.0.17",
         "6.0.32",
         "7.0.20",
-        "8.0.7",
-        "9.0.5"
+        "8.0.23",
+        "9.0.12"
       ]
     },
     "vs": {