diff --git a/test/IISIntegration.FunctionalTests/Inprocess/LoggingTests.cs b/test/IISIntegration.FunctionalTests/Inprocess/LoggingTests.cs
index b3c3dd89df..60e39ceb35 100644
--- a/test/IISIntegration.FunctionalTests/Inprocess/LoggingTests.cs
+++ b/test/IISIntegration.FunctionalTests/Inprocess/LoggingTests.cs
@@ -33,7 +33,7 @@ namespace Microsoft.AspNetCore.Server.IISIntegration.FunctionalTests
 
             Assert.Equal("Hello World", responseText);
 
-            Dispose();
+            StopServer();
 
             var folderPath = Path.Combine(deploymentResult.DeploymentResult.ContentRoot, @"logs");
 
diff --git a/test/IISIntegration.FunctionalTests/Inprocess/StartupExceptionTests.cs b/test/IISIntegration.FunctionalTests/Inprocess/StartupExceptionTests.cs
index 79b92c3424..d82877d20c 100644
--- a/test/IISIntegration.FunctionalTests/Inprocess/StartupExceptionTests.cs
+++ b/test/IISIntegration.FunctionalTests/Inprocess/StartupExceptionTests.cs
@@ -29,6 +29,8 @@ namespace Microsoft.AspNetCore.Server.IISIntegration.FunctionalTests
 
             Assert.Equal(HttpStatusCode.InternalServerError, response.StatusCode);
 
+            StopServer();
+
             Assert.Contains(TestSink.Writes, context => context.Message.Contains($"Random number: {randomNumberString}"));
         }
 
@@ -48,6 +50,8 @@ namespace Microsoft.AspNetCore.Server.IISIntegration.FunctionalTests
 
             Assert.Equal(HttpStatusCode.InternalServerError, response.StatusCode);
 
+            StopServer();
+
             Assert.Contains(TestSink.Writes, context => context.Message.Contains(new string('a', 4096)));
         }
     }
diff --git a/test/IISIntegration.FunctionalTests/Inprocess/StartupTests.cs b/test/IISIntegration.FunctionalTests/Inprocess/StartupTests.cs
index c470e12360..2f36110c90 100644
--- a/test/IISIntegration.FunctionalTests/Inprocess/StartupTests.cs
+++ b/test/IISIntegration.FunctionalTests/Inprocess/StartupTests.cs
@@ -126,6 +126,9 @@ namespace Microsoft.AspNetCore.Server.IISIntegration.FunctionalTests
             var deploymentResult = await DeployAsync(GetBaseDeploymentParameters("OverriddenServerWebSite"));
             var response = await deploymentResult.HttpClient.GetAsync("/");
             Assert.False(response.IsSuccessStatusCode);
+
+            StopServer();
+
             Assert.Contains(TestSink.Writes, context => context.Message.Contains("Application is running inside IIS process but is not configured to use IIS server"));
         }
 
diff --git a/test/IISIntegration.FunctionalTests/OutOfProcess/GlobalVersionTests.cs b/test/IISIntegration.FunctionalTests/OutOfProcess/GlobalVersionTests.cs
index dfeefd3d8b..2bef2b3c16 100644
--- a/test/IISIntegration.FunctionalTests/OutOfProcess/GlobalVersionTests.cs
+++ b/test/IISIntegration.FunctionalTests/OutOfProcess/GlobalVersionTests.cs
@@ -119,7 +119,7 @@ namespace Microsoft.AspNetCore.Server.IISIntegration.FunctionalTests
 
             Assert.Equal(_helloWorldResponse, responseText);
 
-            Dispose();
+            StopServer();
 
             deploymentResult = await DeployAsync(deploymentParameters);
 
diff --git a/test/IISIntegration.FunctionalTests/Utilities/FunctionalTestsBase.cs b/test/IISIntegration.FunctionalTests/Utilities/FunctionalTestsBase.cs
index 7817fd661f..1e739b645a 100644
--- a/test/IISIntegration.FunctionalTests/Utilities/FunctionalTestsBase.cs
+++ b/test/IISIntegration.FunctionalTests/Utilities/FunctionalTestsBase.cs
@@ -32,8 +32,14 @@ namespace Microsoft.AspNetCore.Server.IntegrationTesting
         }
 
         public override void Dispose()
+        {
+            StopServer();
+        }
+
+        public void StopServer()
         {
             _deployer?.Dispose();
+            _deployer = null;
         }
     }
 }