diff --git a/eng/pipelines/coreclr/templates/helix-queues-setup.yml b/eng/pipelines/coreclr/templates/helix-queues-setup.yml
index df4e76557c0d35..1ee222e97d1ef5 100644
--- a/eng/pipelines/coreclr/templates/helix-queues-setup.yml
+++ b/eng/pipelines/coreclr/templates/helix-queues-setup.yml
@@ -92,13 +92,11 @@ jobs:
         - (Debian.10.Amd64.Open)Ubuntu.1804.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-10-helix-amd64
         - (Debian.11.Amd64.Open)Ubuntu.1804.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-11-helix-amd64
         - Ubuntu.1804.Amd64.Open
-        - (Centos.8.Amd64.Open)Ubuntu.1604.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-helix
         - RedHat.7.Amd64.Open
       - ${{ if eq(variables['System.TeamProject'], 'internal') }}:
         - (Debian.10.Amd64)Ubuntu.1804.amd64@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-10-helix-amd64
         - (Debian.11.Amd64)Ubuntu.1804.amd64@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-11-helix-amd64
         - Ubuntu.1804.Amd64
-        - (Centos.8.Amd64)Ubuntu.1604.amd64@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-helix
         - (Fedora.34.Amd64)Ubuntu.1604.amd64@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-34-helix
         - RedHat.7.Amd64
 
@@ -122,14 +120,9 @@ jobs:
         - Windows.10.Amd64.Open
       - ${{ if and(eq(variables['System.TeamProject'], 'public'), notIn(parameters.jobParameters.helixQueueGroup, 'pr', 'ci', 'libraries')) }}:
         - (Windows.Nano.1809.Amd64.Open)windows.10.amd64.serverrs5.open@mcr.microsoft.com/dotnet-buildtools/prereqs:nanoserver-1809-helix-amd64
-        - Windows.7.Amd64.Open
-        - Windows.81.Amd64.Open
         - Windows.10.Amd64.Open
       - ${{ if eq(variables['System.TeamProject'], 'internal') }}:
-        - Windows.7.Amd64
-        - Windows.81.Amd64
         - Windows.10.Amd64
-        - Windows.10.Amd64.Core
         - (Windows.Nano.1809.Amd64)windows.10.amd64.serverrs5@mcr.microsoft.com/dotnet-buildtools/prereqs:nanoserver-1809-helix-amd64
 
     # windows x86
@@ -137,14 +130,9 @@ jobs:
       - ${{ if and(eq(variables['System.TeamProject'], 'public'), in(parameters.jobParameters.helixQueueGroup, 'pr', 'ci', 'libraries')) }}:
         - Windows.10.Amd64.Open
       - ${{ if and(eq(variables['System.TeamProject'], 'public'), notIn(parameters.jobParameters.helixQueueGroup, 'pr', 'ci', 'libraries')) }}:
-        - Windows.7.Amd64.Open
-        - Windows.81.Amd64.Open
         - Windows.10.Amd64.Open
       - ${{ if eq(variables['System.TeamProject'], 'internal') }}:
-        - Windows.7.Amd64
-        - Windows.81.Amd64
         - Windows.10.Amd64
-        - Windows.10.Amd64.Core
 
     # windows arm
     - ${{ if eq(parameters.platform, 'windows_arm') }}:
diff --git a/eng/pipelines/libraries/helix-queues-setup.yml b/eng/pipelines/libraries/helix-queues-setup.yml
index da17438620d34f..003bd29fcc3ce3 100644
--- a/eng/pipelines/libraries/helix-queues-setup.yml
+++ b/eng/pipelines/libraries/helix-queues-setup.yml
@@ -54,7 +54,6 @@ jobs:
     - ${{ if eq(parameters.platform, 'Linux_x64') }}:
       - ${{ if and(eq(parameters.jobParameters.interpreter, ''), ne(parameters.jobParameters.isSingleFile, true)) }}:
         - ${{ if and(eq(parameters.jobParameters.testScope, 'outerloop'), eq(parameters.jobParameters.runtimeFlavor, 'mono')) }}:
-          - (Centos.8.Amd64.Open)Ubuntu.1604.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-helix
           - RedHat.7.Amd64.Open
           - SLES.15.Amd64.Open
           - (Fedora.34.Amd64.Open)ubuntu.1604.amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-34-helix
@@ -63,7 +62,6 @@ jobs:
         - ${{ if or(ne(parameters.jobParameters.testScope, 'outerloop'), ne(parameters.jobParameters.runtimeFlavor, 'mono')) }}:
           - ${{ if eq(parameters.jobParameters.isFullMatrix, true) }}:
             - (Centos.7.Amd64.Open)Ubuntu.1604.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-7-mlnet-helix
-            - (Centos.8.Amd64.Open)Ubuntu.1604.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-helix
             - RedHat.7.Amd64.Open
             - Ubuntu.1804.Amd64.Open
             - SLES.12.Amd64.Open