diff --git a/eng/pipelines/coreclr/templates/helix-queues-setup.yml b/eng/pipelines/coreclr/templates/helix-queues-setup.yml
index a5274b5f704370..f0825c4b33009f 100644
--- a/eng/pipelines/coreclr/templates/helix-queues-setup.yml
+++ b/eng/pipelines/coreclr/templates/helix-queues-setup.yml
@@ -91,13 +91,11 @@ 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.1804.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.1804.amd64@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-34-helix
         - RedHat.7.Amd64
 
@@ -124,13 +122,9 @@ jobs:
           - Windows.11.Amd64.Cet.Open
         - ${{ if ne(parameters.jobParameters.helixQueueGroup, 'cet') }}:
           - (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.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
@@ -138,13 +132,9 @@ 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.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 84d4f776820e55..bce2b40f1ae57b 100644
--- a/eng/pipelines/libraries/helix-queues-setup.yml
+++ b/eng/pipelines/libraries/helix-queues-setup.yml
@@ -67,7 +67,6 @@ jobs:
           - (Debian.10.Amd64.Open)Ubuntu.2204.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-10-helix-amd64
         - ${{ if or(ne(parameters.jobParameters.testScope, 'outerloop'), ne(parameters.jobParameters.runtimeFlavor, 'mono')) }}:
           - ${{ if or(eq(parameters.jobParameters.isExtraPlatforms, true), eq(parameters.jobParameters.includeAllPlatforms, true)) }}:
-            - (Centos.8.Amd64.Open)Ubuntu.1604.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-helix
             - SLES.15.Amd64.Open
             - (Fedora.34.Amd64.Open)ubuntu.1804.amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-34-helix
             - Ubuntu.2204.Amd64.Open