diff --git a/src/libraries/Microsoft.Extensions.DependencyInjection/tests/DI.Tests/ServiceProviderCompilationTest.cs b/src/libraries/Microsoft.Extensions.DependencyInjection/tests/DI.Tests/ServiceProviderCompilationTest.cs
index 8094dde9364b1f..d40e84a7d9b804 100644
--- a/src/libraries/Microsoft.Extensions.DependencyInjection/tests/DI.Tests/ServiceProviderCompilationTest.cs
+++ b/src/libraries/Microsoft.Extensions.DependencyInjection/tests/DI.Tests/ServiceProviderCompilationTest.cs
@@ -18,6 +18,7 @@ public class ServiceProviderCompilationTest
         [InlineData(ServiceProviderMode.ILEmit, typeof(I999))]
         [InlineData(ServiceProviderMode.Expressions, typeof(I999))]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/33894", TestRuntimes.Mono)]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         private async Task CompilesInLimitedStackSpace(ServiceProviderMode mode, Type serviceType)
         {
             // Arrange
diff --git a/src/libraries/Microsoft.Extensions.Logging.Abstractions/tests/Microsoft.Extensions.Logging.Generators.Tests/LoggerMessageGeneratorIncrementalTests.cs b/src/libraries/Microsoft.Extensions.Logging.Abstractions/tests/Microsoft.Extensions.Logging.Generators.Tests/LoggerMessageGeneratorIncrementalTests.cs
index 79bb22592d8e79..379d461a69df40 100644
--- a/src/libraries/Microsoft.Extensions.Logging.Abstractions/tests/Microsoft.Extensions.Logging.Generators.Tests/LoggerMessageGeneratorIncrementalTests.cs
+++ b/src/libraries/Microsoft.Extensions.Logging.Abstractions/tests/Microsoft.Extensions.Logging.Generators.Tests/LoggerMessageGeneratorIncrementalTests.cs
@@ -3,6 +3,7 @@
 
 #if ROSLYN4_8_OR_GREATER
 
+using System;
 using System.Collections.Immutable;
 using System.Linq;
 using Microsoft.CodeAnalysis;
@@ -17,6 +18,7 @@ public class LoggerMessageGeneratorIncrementalTests
             new GeneratorDriverOptions(IncrementalGeneratorOutputKind.None, trackIncrementalGeneratorSteps: true);
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void AddingNewUnrelatedType_DoesNotRegenerateSource()
         {
             string source = """
@@ -55,6 +57,7 @@ partial class C
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void AppendingUnrelatedSource_DoesNotRegenerateSource()
         {
             string source = """
@@ -100,6 +103,7 @@ partial class C
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void AddingNewLoggerMessageMethod_DoesNotRegenerateExistingMethod()
         {
             string source1 = """
@@ -154,6 +158,7 @@ partial class D
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void ChangingLoggerMessageAttribute_RegeneratesMethod()
         {
             string source1 = """
@@ -203,6 +208,7 @@ partial class C
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void ChangingUnrelatedMethodBody_DoesNotRegenerateLoggerMessage()
         {
             string source1 = """
diff --git a/src/libraries/Microsoft.VisualBasic.Core/tests/Microsoft/VisualBasic/FileIO/FileSystemTests.cs b/src/libraries/Microsoft.VisualBasic.Core/tests/Microsoft/VisualBasic/FileIO/FileSystemTests.cs
index 6b7c95bf565f5f..3166416a8b6b31 100644
--- a/src/libraries/Microsoft.VisualBasic.Core/tests/Microsoft/VisualBasic/FileIO/FileSystemTests.cs
+++ b/src/libraries/Microsoft.VisualBasic.Core/tests/Microsoft/VisualBasic/FileIO/FileSystemTests.cs
@@ -286,6 +286,7 @@ public void CreateDirectory_LongPath()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void CurrentDirectoryGet()
         {
             var CurrentDirectory = System.IO.Directory.GetCurrentDirectory();
@@ -294,6 +295,7 @@ public void CurrentDirectoryGet()
 
         [Fact]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/50572", TestPlatforms.Android)]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void CurrentDirectorySet()
         {
             var SavedCurrentDirectory = System.IO.Directory.GetCurrentDirectory();
diff --git a/src/libraries/System.Collections.Concurrent/tests/ConcurrentQueueTests.cs b/src/libraries/System.Collections.Concurrent/tests/ConcurrentQueueTests.cs
index 6ec3ce8b0b5be2..eba87cb39f3262 100644
--- a/src/libraries/System.Collections.Concurrent/tests/ConcurrentQueueTests.cs
+++ b/src/libraries/System.Collections.Concurrent/tests/ConcurrentQueueTests.cs
@@ -212,6 +212,7 @@ public void IEnumerable_GetAllExpectedItems()
 
         [Fact]
         [ActiveIssue("https://github.com/mono/mono/issues/16413", TestRuntimes.Mono)]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void ReferenceTypes_NulledAfterDequeue()
         {
             int iterations = 10; // any number <32 will do
@@ -277,6 +278,7 @@ public void ManySegments_ConcurrentDequeues_RemainsConsistent()
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsMultithreadingSupported))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void ManySegments_ConcurrentEnqueues_RemainsConsistent()
         {
             var cq = new ConcurrentQueue<int>();
diff --git a/src/libraries/System.Collections/tests/Generic/Dictionary/Dictionary.Generic.Tests.cs b/src/libraries/System.Collections/tests/Generic/Dictionary/Dictionary.Generic.Tests.cs
index 470312be885c26..2197973ca51306 100644
--- a/src/libraries/System.Collections/tests/Generic/Dictionary/Dictionary.Generic.Tests.cs
+++ b/src/libraries/System.Collections/tests/Generic/Dictionary/Dictionary.Generic.Tests.cs
@@ -5,6 +5,7 @@
 using System.Globalization;
 using System.Linq;
 using System.Runtime.Serialization;
+using Microsoft.DotNet.XUnitExtensions;
 using Xunit;
 
 namespace System.Collections.Tests
@@ -774,7 +775,7 @@ public void Dictionary_GetAlternateLookup_OperationsMatchUnderlyingDictionary(IE
         #endregion
 
         #region Non-randomized comparers
-        [Fact]
+        [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsBinaryFormatterSupported))]
         public void Dictionary_Comparer_NonRandomizedStringComparers()
         {
             RunTest(null);
diff --git a/src/libraries/System.Collections/tests/Generic/Dictionary/HashCollisionScenarios/OutOfBoundsRegression.cs b/src/libraries/System.Collections/tests/Generic/Dictionary/HashCollisionScenarios/OutOfBoundsRegression.cs
index e131d4bb25ee5d..c2223e665178d5 100644
--- a/src/libraries/System.Collections/tests/Generic/Dictionary/HashCollisionScenarios/OutOfBoundsRegression.cs
+++ b/src/libraries/System.Collections/tests/Generic/Dictionary/HashCollisionScenarios/OutOfBoundsRegression.cs
@@ -272,6 +272,7 @@ public class InternalHashCodeTests_OrderedDictionary_LinguisticComparer : Intern
     }
     #endregion
 
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
     public abstract class InternalHashCodeTests<TCollection>
     {
         protected static Type nonRandomizedOrdinalComparerType = typeof(object).Assembly.GetType("System.Collections.Generic.NonRandomizedStringEqualityComparer+OrdinalComparer", throwOnError: true);
diff --git a/src/libraries/System.Collections/tests/Generic/HashSet/HashSet.NonGeneric.Tests.cs b/src/libraries/System.Collections/tests/Generic/HashSet/HashSet.NonGeneric.Tests.cs
index 01dee5e49f9f70..3553ef95ac6c2a 100644
--- a/src/libraries/System.Collections/tests/Generic/HashSet/HashSet.NonGeneric.Tests.cs
+++ b/src/libraries/System.Collections/tests/Generic/HashSet/HashSet.NonGeneric.Tests.cs
@@ -10,6 +10,7 @@ namespace System.Collections.Tests
 {
     public static class HashSet_NonGeneric_Tests
     {
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         [Fact]
         public static void HashSet_CopyConstructor_ShouldWorkWithRandomizedEffectiveComparer()
         {
diff --git a/src/libraries/System.ComponentModel.EventBasedAsync/tests/BackgroundWorkerTests.cs b/src/libraries/System.ComponentModel.EventBasedAsync/tests/BackgroundWorkerTests.cs
index c211e7ac3b496c..f0a04ea3eb4e4b 100644
--- a/src/libraries/System.ComponentModel.EventBasedAsync/tests/BackgroundWorkerTests.cs
+++ b/src/libraries/System.ComponentModel.EventBasedAsync/tests/BackgroundWorkerTests.cs
@@ -71,6 +71,7 @@ public void TestBackgroundWorkerBasic()
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsMultithreadingSupported))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public async Task RunWorkerAsync_NoOnWorkHandler_SetsResultToNull()
         {
             var tcs = new TaskCompletionSource();
@@ -326,6 +327,7 @@ public void DisposeTwiceShouldNotThrow()
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void TestFinalization()
         {
             // BackgroundWorker has a finalizer that exists purely for backwards compatibility
diff --git a/src/libraries/System.Data.Common/tests/System/Data/Common/DbCommandTests.cs b/src/libraries/System.Data.Common/tests/System/Data/Common/DbCommandTests.cs
index 7d87f0f87e6bb3..e5acef2c1b23b8 100644
--- a/src/libraries/System.Data.Common/tests/System/Data/Common/DbCommandTests.cs
+++ b/src/libraries/System.Data.Common/tests/System/Data/Common/DbCommandTests.cs
@@ -154,6 +154,7 @@ protected override DbDataReader ExecuteDbDataReader(CommandBehavior behavior)
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void CanBeFinalized()
         {
             FinalizingCommand.CreateAndRelease();
diff --git a/src/libraries/System.Data.Common/tests/System/Data/Common/DbConnectionTests.cs b/src/libraries/System.Data.Common/tests/System/Data/Common/DbConnectionTests.cs
index 42ea4d30d8e4db..49ebf021c95047 100644
--- a/src/libraries/System.Data.Common/tests/System/Data/Common/DbConnectionTests.cs
+++ b/src/libraries/System.Data.Common/tests/System/Data/Common/DbConnectionTests.cs
@@ -86,6 +86,7 @@ private class TestDbProviderFactory : DbProviderFactory
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void CanBeFinalized()
         {
             FinalizingConnection.CreateAndRelease();
diff --git a/src/libraries/System.Diagnostics.Tracing/tests/BasicEventSourceTest/ActivityTracking.cs b/src/libraries/System.Diagnostics.Tracing/tests/BasicEventSourceTest/ActivityTracking.cs
index 361971b3b1243a..e7994467db6925 100644
--- a/src/libraries/System.Diagnostics.Tracing/tests/BasicEventSourceTest/ActivityTracking.cs
+++ b/src/libraries/System.Diagnostics.Tracing/tests/BasicEventSourceTest/ActivityTracking.cs
@@ -52,6 +52,7 @@ public void IsSupported()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void StartStopCreatesActivity()
         {
             using ActivityEventListener l = new ActivityEventListener();
@@ -67,6 +68,7 @@ public void StartStopCreatesActivity()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public async Task ActivityFlowsAsync()
         {
             using ActivityEventListener l = new ActivityEventListener();
@@ -115,6 +117,7 @@ private async Task YieldTwoActivitiesDeep(ActivityEventSource es)
         // the future we might decide it wasn't even desirable to begin with.
         // Compare with SetCurrentActivityIdAfterEventDoesNotFlowAsync below.
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public async Task SetCurrentActivityIdBeforeEventFlowsAsync()
         {
             using ActivityEventListener l = new ActivityEventListener();
@@ -140,6 +143,7 @@ public async Task SetCurrentActivityIdBeforeEventFlowsAsync()
         // the future we might decide it wasn't even desirable to begin with.
         // Compare with SetCurrentActivityIdBeforeEventFlowsAsync above.
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public async Task SetCurrentActivityIdAfterEventDoesNotFlowAsync()
         {
             using ActivityEventListener l = new ActivityEventListener();
diff --git a/src/libraries/System.IO.Compression.ZipFile/tests/ZipFile.Unix.cs b/src/libraries/System.IO.Compression.ZipFile/tests/ZipFile.Unix.cs
index e60fd22e336abd..68f7d1c6dcb0cd 100644
--- a/src/libraries/System.IO.Compression.ZipFile/tests/ZipFile.Unix.cs
+++ b/src/libraries/System.IO.Compression.ZipFile/tests/ZipFile.Unix.cs
@@ -15,6 +15,7 @@ namespace System.IO.Compression.Tests
     public partial class ZipFile_Unix : ZipFileTestBase
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void UnixCreateSetsPermissionsInExternalAttributes()
         {
             // '7600' tests that S_ISUID, S_ISGID, and S_ISVTX bits get preserved in ExternalAttributes
@@ -70,6 +71,7 @@ public void UnixCreateSetsPermissionsInExternalAttributesUMaskZero()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void UnixExtractSetsFilePermissionsFromExternalAttributes()
         {
             // '7600' tests that S_ISUID, S_ISGID, and S_ISVTX bits don't get extracted to file permissions
@@ -173,6 +175,7 @@ public static IEnumerable<object[]> Get_UnixExtractFilePermissionsCompat_Data()
 
         [Theory]
         [MemberData(nameof(Get_UnixExtractFilePermissionsCompat_Data))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public async Task UnixExtractFilePermissionsCompat(string zipName, string expectedPermissions, bool async)
         {
             expectedPermissions = GetExpectedPermissions(expectedPermissions);
diff --git a/src/libraries/System.Net.Requests/tests/ServicePointTests/ServicePointManagerTest.cs b/src/libraries/System.Net.Requests/tests/ServicePointTests/ServicePointManagerTest.cs
index ea8ddffd549a20..5fef151c64e894 100644
--- a/src/libraries/System.Net.Requests/tests/ServicePointTests/ServicePointManagerTest.cs
+++ b/src/libraries/System.Net.Requests/tests/ServicePointTests/ServicePointManagerTest.cs
@@ -9,6 +9,7 @@
 
 namespace System.Net.Tests
 {
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
     public class ServicePointManagerTest
     {
         [Fact]
diff --git a/src/libraries/System.Net.Requests/tests/ServicePointTests/TlsSystemDefault.cs b/src/libraries/System.Net.Requests/tests/ServicePointTests/TlsSystemDefault.cs
index 3fc641479c2cf1..37b0d075eca00a 100644
--- a/src/libraries/System.Net.Requests/tests/ServicePointTests/TlsSystemDefault.cs
+++ b/src/libraries/System.Net.Requests/tests/ServicePointTests/TlsSystemDefault.cs
@@ -8,12 +8,14 @@ namespace System.Net.Tests
     public class TlsSystemDefault
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void ServicePointManager_SecurityProtocolDefault_Ok()
         {
             Assert.Equal(SecurityProtocolType.SystemDefault, ServicePointManager.SecurityProtocol);
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void ServicePointManager_CheckAllowedProtocols_SystemDefault_Allowed()
         {
             SecurityProtocolType orig = ServicePointManager.SecurityProtocol;
diff --git a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantMarshallerTests.cs b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantMarshallerTests.cs
index 43ad6f8840f64e..218dab3c2497c6 100644
--- a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantMarshallerTests.cs
+++ b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantMarshallerTests.cs
@@ -17,6 +17,7 @@ namespace System.Runtime.InteropServices.Tests
     public partial class ComVariantMarshallerTests
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void Null_Marshals_To_Empty()
         {
             Assert.Equal(VarEnum.VT_EMPTY, ComVariantMarshaller.ConvertToUnmanaged(null).VarType);
@@ -24,6 +25,7 @@ public void Null_Marshals_To_Empty()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void DBNull_Marshals_To_Null()
         {
             Assert.Equal(VarEnum.VT_NULL, ComVariantMarshaller.ConvertToUnmanaged(DBNull.Value).VarType);
@@ -265,6 +267,7 @@ public void Decimal_Marshals_To_DECIMAL(decimal value)
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void Date_Marshals_To_DATE()
         {
             // OLE dates do not have time zones and do not support sub-millisecond precision.
@@ -309,7 +312,8 @@ public void Method() { }
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/55742", TestRuntimes.Mono)]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/55742", typeof(PlatformDetection), nameof(PlatformDetection.IsMonoRuntime))]
         public unsafe void GeneratedComInterfaceType_Marshals_To_UNKNOWN()
         {
             var obj = new ComExposedType();
@@ -326,6 +330,7 @@ public unsafe void GeneratedComInterfaceType_Marshals_To_UNKNOWN()
 
         [Fact]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/55742", TestRuntimes.Mono)]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void UnknownWrapper_Of_GeneratedComInterfaceType_Marshals_To_UNKNOWN()
         {
             var obj = new ComExposedType();
diff --git a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantTests.cs b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantTests.cs
index d438a121b1d348..0ab90b463cc601 100644
--- a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantTests.cs
+++ b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/ComVariantTests.cs
@@ -143,12 +143,14 @@ public void VariantBoolFalse()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void VTVariantNotSupported()
         {
             Assert.Throws<ArgumentException>("vt", () => ComVariant.CreateRaw(VarEnum.VT_VARIANT, 1));
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsBuiltInComEnabled))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void Unknown_NotSupported()
         {
             UnknownWrapper wrapper = new(new TestObject());
diff --git a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/AddRefTests.cs b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/AddRefTests.cs
index ee1772a78d6fda..97d8d28fa61b0e 100644
--- a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/AddRefTests.cs
+++ b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/AddRefTests.cs
@@ -11,6 +11,7 @@ public class AddRefTests
         [Fact]
         [SkipOnMono("ComWrappers are not supported on Mono")]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/76005", typeof(PlatformDetection), nameof(PlatformDetection.IsNativeAot), nameof(PlatformDetection.IsNotWindows))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void AddRef_ValidPointer_Success()
         {
             var cw = new ComWrappersImpl();
diff --git a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/QueryInterfaceTests.cs b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/QueryInterfaceTests.cs
index 42c0ba1cb15871..b81df59c17566a 100644
--- a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/QueryInterfaceTests.cs
+++ b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/QueryInterfaceTests.cs
@@ -23,6 +23,7 @@ public static IEnumerable<object[]> QueryInterface_ValidInterface_TestData()
         [MemberData(nameof(QueryInterface_ValidInterface_TestData))]
         [SkipOnMono("ComWrappers are not supported on Mono")]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/76005", typeof(PlatformDetection), nameof(PlatformDetection.IsNativeAot), nameof(PlatformDetection.IsNotWindows))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void QueryInterface_ValidInterface_Success(object o, string iidString)
         {
             var cw = new ComWrappersImpl();
@@ -57,6 +58,7 @@ public static IEnumerable<object[]> QueryInterface_NoSuchInterface_TestData()
         [MemberData(nameof(QueryInterface_NoSuchInterface_TestData))]
         [SkipOnMono("ComWrappers are not supported on Mono")]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/76005", typeof(PlatformDetection), nameof(PlatformDetection.IsNativeAot), nameof(PlatformDetection.IsNotWindows))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void QueryInterface_NoSuchInterface_Success(object o, string iidString)
         {
             var cw = new ComWrappersImpl();
diff --git a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/ReleaseTests.cs b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/ReleaseTests.cs
index 087318aa6420cc..fc24bf37c81e43 100644
--- a/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/ReleaseTests.cs
+++ b/src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/ReleaseTests.cs
@@ -11,6 +11,7 @@ public class ReleaseTests
         [Fact]
         [SkipOnMono("ComWrappers are not supported on Mono")]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/76005", typeof(PlatformDetection), nameof(PlatformDetection.IsNativeAot), nameof(PlatformDetection.IsNotWindows))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void Release_ValidPointer_Success()
         {
             var cw = new ComWrappersImpl();
diff --git a/src/libraries/System.Runtime.Intrinsics/tests/Wasm/PackedSimdTests.cs b/src/libraries/System.Runtime.Intrinsics/tests/Wasm/PackedSimdTests.cs
index cb529221bf2e61..0c1693d35e2636 100644
--- a/src/libraries/System.Runtime.Intrinsics/tests/Wasm/PackedSimdTests.cs
+++ b/src/libraries/System.Runtime.Intrinsics/tests/Wasm/PackedSimdTests.cs
@@ -14,6 +14,7 @@
 namespace System.Runtime.Intrinsics.Wasm.Tests
 {
     [PlatformSpecific(TestPlatforms.Browser)]
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
     public sealed class PackedSimdTests
     {
         [Fact]
diff --git a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.indexer.regclass.cs b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.indexer.regclass.cs
index 5f02e32811909f..3ef564bf89e0f6 100644
--- a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.indexer.regclass.cs
+++ b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.indexer.regclass.cs
@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System;
 using ManagedTests.DynamicCSharp.Conformance.dynamic.context.indexer.regclass.regclassregindexer.regclassregindexer;
 using Xunit;
 
@@ -1006,6 +1007,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.indexer.regclas
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
@@ -2267,6 +2269,7 @@ private static void RequireLifetimesEnded()
             GC.KeepAlive(t);
         }
 
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
         public static void DynamicCSharpRunTest()
         {
@@ -2293,6 +2296,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.indexer.regclas
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
diff --git a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.method.genmethod.regclass.cs b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.method.genmethod.regclass.cs
index 4f38821a18c1d3..43a625317651ef 100644
--- a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.method.genmethod.regclass.cs
+++ b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.method.genmethod.regclass.cs
@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System;
 using ManagedTests.DynamicCSharp.Conformance.dynamic.context.method.genmethod.regclass.regclassgenmeth.regclassgenmeth;
 using Xunit;
 
@@ -223,6 +224,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.method.genmetho
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
@@ -941,6 +943,7 @@ private static void RequireLifetimesEnded()
             GC.KeepAlive(t);
         }
 
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
         public static void DynamicCSharpRunTest()
         {
@@ -973,6 +976,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.method.genmetho
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
diff --git a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.operator.regclass.cs b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.operator.regclass.cs
index c5af627116a447..17734cbb1c86a8 100644
--- a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.operator.regclass.cs
+++ b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.operator.regclass.cs
@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System;
 using ManagedTests.DynamicCSharp.Conformance.dynamic.context.operate.regclass.regclassoperate.regclassoperate;
 using Xunit;
 
@@ -679,6 +680,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.operate.regclas
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
@@ -717,6 +719,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.operate.regclas
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
@@ -1781,6 +1784,7 @@ private static void RequireLifetimesEnded()
             GC.KeepAlive(t);
         }
 
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
         public static void DynamicCSharpRunTest()
         {
@@ -1839,6 +1843,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.operate.regclas
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
@@ -3459,6 +3464,7 @@ private static void RequireLifetimesEnded()
             GC.KeepAlive(t);
         }
 
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
         public static void DynamicCSharpRunTest()
         {
@@ -3491,6 +3497,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.operate.regclas
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
diff --git a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.property.autoproperty.regclass.cs b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.property.autoproperty.regclass.cs
index 36bddd6d2c8c5f..30f0744bd0a6ad 100644
--- a/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.property.autoproperty.regclass.cs
+++ b/src/libraries/System.Runtime/tests/System.Dynamic.Runtime.Tests/Dynamic.Context/Conformance.dynamic.context.property.autoproperty.regclass.cs
@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System;
 using ManagedTests.DynamicCSharp.Conformance.dynamic.context.property.autoproperty.regclass.regclassautoprop.regclassautoprop;
 using Xunit;
 
@@ -258,6 +259,7 @@ namespace ManagedTests.DynamicCSharp.Conformance.dynamic.context.property.autopr
     public class Test
     {
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
@@ -519,6 +521,7 @@ private static void RequireLifetimesEnded()
         }
 
         [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsPreciseGcSupported))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public static void DynamicCSharpRunTest()
         {
             Assert.Equal(0, MainMethod());
diff --git a/src/libraries/System.Runtime/tests/System.Runtime.Extensions.Tests/System/EnvironmentTests.cs b/src/libraries/System.Runtime/tests/System.Runtime.Extensions.Tests/System/EnvironmentTests.cs
index 363af8c5286279..fbbcc4068d1446 100644
--- a/src/libraries/System.Runtime/tests/System.Runtime.Extensions.Tests/System/EnvironmentTests.cs
+++ b/src/libraries/System.Runtime/tests/System.Runtime.Extensions.Tests/System/EnvironmentTests.cs
@@ -94,6 +94,7 @@ public void ProcessPath_Idempotent()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         [SkipOnPlatform(TestPlatforms.iOS | TestPlatforms.tvOS | TestPlatforms.Android, "Throws PNSE")]
         public void ProcessPath_MatchesExpectedValue()
         {
@@ -394,6 +395,7 @@ public void GetSystemDirectory()
         [InlineData(Environment.SpecialFolder.MyPictures, Environment.SpecialFolderOption.DoNotVerify)]
         [InlineData(Environment.SpecialFolder.Fonts, Environment.SpecialFolderOption.DoNotVerify)]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/49868", TestPlatforms.Android)]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/123011", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsCoreCLR))]
         public void GetFolderPath_Unix_NonEmptyFolderPaths(Environment.SpecialFolder folder, Environment.SpecialFolderOption option)
         {
             Assert.NotEmpty(Environment.GetFolderPath(folder, option));
diff --git a/src/libraries/tests.proj b/src/libraries/tests.proj
index 2390674de660a8..9429b6c61d77b4 100644
--- a/src/libraries/tests.proj
+++ b/src/libraries/tests.proj
@@ -193,25 +193,11 @@
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Diagnostics.StackTrace\tests\System.Diagnostics.StackTrace.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Reflection.Tests\System.Reflection.Tests.csproj" />
     <!-- crashes -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.DependencyInjection\tests\DI.Tests\Microsoft.Extensions.DependencyInjection.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.VisualBasic.Core\tests\Microsoft.VisualBasic.Core.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.IO.Compression.ZipFile\tests\System.IO.Compression.ZipFile.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Threading.Thread\tests\System.Threading.Thread.Tests.csproj" />
     <!-- test failures -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Logging.Abstractions\tests\Microsoft.Extensions.Logging.Generators.Tests\Microsoft.Extensions.Logging.Generators.Roslyn4.8.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Expressions\tests\System.Linq.Expressions.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections\tests\System.Collections.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections.Concurrent\tests\System.Collections.Concurrent.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.ComponentModel.EventBasedAsync\tests\System.ComponentModel.EventBasedAsync.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Data.Common\tests\System.Data.Common.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Diagnostics.Tracing\tests\System.Diagnostics.Tracing.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Formats.Nrbf\tests\System.Formats.Nrbf.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Net.Requests\tests\ServicePointTests\System.Net.ServicePoint.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Expressions\tests\System.Linq.Expressions.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Reflection.DispatchProxy\tests\System.Reflection.DispatchProxy.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.InteropServices\tests\System.Runtime.InteropServices.UnitTests\System.Runtime.InteropServices.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Intrinsics\tests\System.Runtime.Intrinsics.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Dynamic.Runtime.Tests\System.Dynamic.Runtime.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Extensions.Tests\System.Runtime.Extensions.Tests.csproj" />
     <!-- long running suites -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq\tests\System.Linq.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Memory\tests\System.Memory.Tests.csproj" />