diff --git a/src/NServiceBus.Core.Tests/Pipeline/PipelineTests.cs b/src/NServiceBus.Core.Tests/Pipeline/PipelineTests.cs
index 7976316c86..8cd41a739e 100644
--- a/src/NServiceBus.Core.Tests/Pipeline/PipelineTests.cs
+++ b/src/NServiceBus.Core.Tests/Pipeline/PipelineTests.cs
@@ -22,6 +22,11 @@ public class PipelineTests
         [Test]
         public async Task ShouldExecutePipeline()
         {
+            if (Environment.OSVersion.Platform != PlatformID.Win32NT)
+            {
+                Assert.Ignore("ApprovalTests only works on Windows");
+            }
+
             var stringWriter = new StringWriter();
 
             var pipelineModifications = new PipelineModifications();
@@ -45,6 +50,11 @@ public async Task ShouldExecutePipeline()
         [Test]
         public async Task ShouldNotCacheContext()
         {
+            if (Environment.OSVersion.Platform != PlatformID.Win32NT)
+            {
+                Assert.Ignore("ApprovalTests only works on Windows");
+            }
+
             var stringWriter = new StringWriter();
 
             var pipelineModifications = new PipelineModifications();
@@ -79,6 +89,11 @@ public async Task ShouldNotCacheContext()
         [Test]
         public void ShouldCreateCachedExecutionPlan()
         {
+            if (Environment.OSVersion.Platform != PlatformID.Win32NT)
+            {
+                Assert.Ignore("ApprovalTests only works on Windows");
+            }
+
             var stringWriter = new StringWriter();
 
             var behaviors = new IBehavior[]
diff --git a/src/NServiceBus.Core.Tests/Sagas/When_saga_has_multiple_correlated_properties.cs b/src/NServiceBus.Core.Tests/Sagas/When_saga_has_multiple_correlated_properties.cs
index e8fd13726f..40f093fc19 100644
--- a/src/NServiceBus.Core.Tests/Sagas/When_saga_has_multiple_correlated_properties.cs
+++ b/src/NServiceBus.Core.Tests/Sagas/When_saga_has_multiple_correlated_properties.cs
@@ -13,6 +13,11 @@ public class When_saga_has_multiple_correlated_properties
         [Test]
         public void Should_throw()
         {
+            if (Environment.OSVersion.Platform != PlatformID.Win32NT)
+            {
+                Assert.Ignore("ApprovalTests only works on Windows");
+            }
+
             var exception = Assert.Throws<Exception>(() => SagaMetadata.Create(typeof(SagaWithMultipleCorrelatedProperties), new List<Type>(), new Conventions()));
             Approvals.Verify(exception.Message);
         }
diff --git a/src/NServiceBus.Core.Tests/StructConventionsTests.cs b/src/NServiceBus.Core.Tests/StructConventionsTests.cs
index fd2ac2db60..40be19f6e8 100644
--- a/src/NServiceBus.Core.Tests/StructConventionsTests.cs
+++ b/src/NServiceBus.Core.Tests/StructConventionsTests.cs
@@ -15,6 +15,11 @@ public class StructConventionsTests
         [Test]
         public void ApproveStructsWhichDontFollowStructGuidelines()
         {
+            if (Environment.OSVersion.Platform != PlatformID.Win32NT)
+            {
+                Assert.Ignore("ApprovalTests only works on Windows");
+            }
+
             var approvalBuilder = new StringBuilder();
             approvalBuilder.AppendLine(@"-------------------------------------------------- REMEMBER --------------------------------------------------
 CONSIDER defining a struct instead of a class if instances of the type are small and commonly short-lived or are commonly embedded in other objects.
diff --git a/src/NServiceBus.Core.Tests/Transports/Learning/HeaderSerializerTests.cs b/src/NServiceBus.Core.Tests/Transports/Learning/HeaderSerializerTests.cs
index ad2c6be69d..7dc9d81f13 100644
--- a/src/NServiceBus.Core.Tests/Transports/Learning/HeaderSerializerTests.cs
+++ b/src/NServiceBus.Core.Tests/Transports/Learning/HeaderSerializerTests.cs
@@ -1,5 +1,6 @@
 namespace NServiceBus.Core.Tests.Transports.Learning
 {
+    using System;
     using System.Collections.Generic;
     using ApprovalTests;
     using NUnit.Framework;
@@ -9,6 +10,11 @@ public class HeaderSerializerTests
         [Test]
         public void Can_round_trip_headers()
         {
+            if (Environment.OSVersion.Platform != PlatformID.Win32NT)
+            {
+                Assert.Ignore("ApprovalTests only works on Windows");
+            }
+
             var input = new Dictionary<string, string>
             {
                 {