diff --git a/Directory.Build.props b/Directory.Build.props
index dd7a10a14a..dd5636ac41 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -13,14 +13,6 @@
     <LangVersion>preview</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <!--
-        Make sure any documentation comments which are included in code get checked for syntax during the build, but do
-        not report warnings for missing comments.
-
-        CS1573: Parameter 'parameter' has no matching param tag in the XML comment for 'parameter' (but other parameters do)
-        CS1591: Missing XML comment for publicly visible type or member 'Type_or_Member'
-      -->
-    <NoWarn>$(NoWarn),1573,1591</NoWarn>
   </PropertyGroup>
 
   <!-- The TFMs to build and test against. -->
diff --git a/src/Adapter/MSTest.TestAdapter/Execution/TestClassInfo.cs b/src/Adapter/MSTest.TestAdapter/Execution/TestClassInfo.cs
index 016a68d2c6..9863905522 100644
--- a/src/Adapter/MSTest.TestAdapter/Execution/TestClassInfo.cs
+++ b/src/Adapter/MSTest.TestAdapter/Execution/TestClassInfo.cs
@@ -38,6 +38,7 @@ public class TestClassInfo
     /// </summary>
     /// <param name="type">Underlying test class type.</param>
     /// <param name="constructor">Constructor for the test class.</param>
+    /// <param name="isParameterlessConstructor">Whether or not the test class constructor has no parameters.</param>
     /// <param name="classAttribute">Test class attribute.</param>
     /// <param name="parent">Parent assembly info.</param>
     internal TestClassInfo(
diff --git a/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs b/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs
index d914105015..3eeb4b88fb 100644
--- a/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs
+++ b/src/Adapter/MSTest.TestAdapter/Execution/TestMethodInfo.cs
@@ -302,6 +302,7 @@ private void ThrowMultipleAttributesException(string attributeName)
     /// Execute test without timeout.
     /// </summary>
     /// <param name="arguments">Arguments to be passed to the method.</param>
+    /// <param name="timeoutTokenSource">The timeout token source.</param>
     /// <returns>The result of the execution.</returns>
     [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Requirement is to handle all kinds of user exceptions and message appropriately.")]
     private TestResult ExecuteInternal(object?[]? arguments, CancellationTokenSource? timeoutTokenSource)
@@ -490,6 +491,7 @@ private static Exception GetRealException(Exception ex)
     /// be expected or not expected.
     /// </summary>
     /// <param name="ex">Exception that was thrown.</param>
+    /// <param name="realException">Real exception thrown by the test method.</param>
     /// <param name="className">The class name.</param>
     /// <param name="methodName">The method name.</param>
     /// <returns>Test framework exception with details.</returns>
@@ -561,6 +563,7 @@ private static TestFailedException HandleMethodException(Exception ex, Exception
     /// Runs TestCleanup methods of parent TestClass and base classes.
     /// </summary>
     /// <param name="result">Instance of TestResult.</param>
+    /// <param name="timeoutTokenSource">The timeout token source.</param>
     [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Requirement is to handle all kinds of user exceptions and message appropriately.")]
     private void RunTestCleanupMethod(TestResult result, CancellationTokenSource? timeoutTokenSource)
     {
@@ -696,6 +699,7 @@ private void RunTestCleanupMethod(TestResult result, CancellationTokenSource? ti
     /// </summary>
     /// <param name="classInstance">Instance of TestClass.</param>
     /// <param name="result">Instance of TestResult.</param>
+    /// <param name="timeoutTokenSource">The timeout token source.</param>
     /// <returns>True if the TestInitialize method(s) did not throw an exception.</returns>
     [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Requirement is to handle all kinds of user exceptions and message appropriately.")]
     private bool RunTestInitializeMethod(object classInstance, TestResult result, CancellationTokenSource? timeoutTokenSource)
diff --git a/src/Adapter/MSTest.TestAdapter/Execution/UnitTestRunner.cs b/src/Adapter/MSTest.TestAdapter/Execution/UnitTestRunner.cs
index 99c46cdded..1e8d3072a8 100644
--- a/src/Adapter/MSTest.TestAdapter/Execution/UnitTestRunner.cs
+++ b/src/Adapter/MSTest.TestAdapter/Execution/UnitTestRunner.cs
@@ -31,6 +31,8 @@ internal sealed class UnitTestRunner : MarshalByRefObject
     /// Initializes a new instance of the <see cref="UnitTestRunner"/> class.
     /// </summary>
     /// <param name="settings"> Specifies adapter settings that need to be instantiated in the domain running these tests. </param>
+    /// <param name="testsToRun"> The tests to run. </param>
+    /// <param name="classCleanupLifecycle"> The class cleanup lifecycle. </param>
     public UnitTestRunner(MSTestSettings settings, UnitTestElement[] testsToRun, int? classCleanupLifecycle)
         : this(settings, testsToRun, classCleanupLifecycle, ReflectHelper.Instance)
     {
@@ -40,6 +42,8 @@ public UnitTestRunner(MSTestSettings settings, UnitTestElement[] testsToRun, int
     /// Initializes a new instance of the <see cref="UnitTestRunner"/> class.
     /// </summary>
     /// <param name="settings"> Specifies adapter settings. </param>
+    /// <param name="testsToRun"> The tests to run. </param>
+    /// <param name="classCleanupLifecycle"> The class cleanup lifecycle. </param>
     /// <param name="reflectHelper"> The reflect Helper. </param>
     internal UnitTestRunner(MSTestSettings settings, UnitTestElement[] testsToRun, int? classCleanupLifecycle, ReflectHelper reflectHelper)
     {
@@ -134,6 +138,7 @@ internal TestResult[] RunSingleTest(TestMethod testMethod, IDictionary<string, o
     /// </summary>
     /// <param name="testMethod"> The test Method. </param>
     /// <param name="testContextProperties"> The test context properties. </param>
+    /// <param name="messageLogger"> The message logger. </param>
     /// <returns> The <see cref="TestResult"/>. </returns>
     internal async Task<TestResult[]> RunSingleTestAsync(TestMethod testMethod, IDictionary<string, object?> testContextProperties, IMessageLogger messageLogger)
     {
diff --git a/src/Adapter/MSTest.TestAdapter/IPlatformServiceProvider.cs b/src/Adapter/MSTest.TestAdapter/IPlatformServiceProvider.cs
index 487e5fe10a..9df85c3521 100644
--- a/src/Adapter/MSTest.TestAdapter/IPlatformServiceProvider.cs
+++ b/src/Adapter/MSTest.TestAdapter/IPlatformServiceProvider.cs
@@ -59,6 +59,9 @@ internal interface IPlatformServiceProvider
     /// </summary>
     TestRunCancellationToken? TestRunCancellationToken { get; set; }
 
+    /// <summary>
+    /// Gets or sets a value indicating whether a graceful stop is requested.
+    /// </summary>
     bool IsGracefulStopRequested { get; set; }
 
     /// <summary>
@@ -120,6 +123,8 @@ ITestSourceHost CreateTestSourceHost(
     /// <param name="properties">
     /// The default set of properties the test context needs to be filled with.
     /// </param>
+    /// <param name="messageLogger">The message logger.</param>
+    /// <param name="outcome">The test outcome.</param>
     /// <returns>
     /// The <see cref="ITestContext"/> instance.
     /// </returns>
diff --git a/src/Adapter/MSTest.TestAdapter/MSTestSettings.cs b/src/Adapter/MSTest.TestAdapter/MSTestSettings.cs
index c371cd755c..e48059d665 100644
--- a/src/Adapter/MSTest.TestAdapter/MSTestSettings.cs
+++ b/src/Adapter/MSTest.TestAdapter/MSTestSettings.cs
@@ -292,10 +292,9 @@ private static bool IsRunSettingsFileHasSettingName(string? runSettingsXml, stri
     /// <summary>
     /// Populate adapter settings from the context.
     /// </summary>
-    /// <param name="context">
+    /// <param name="context">The discovery context.</param>
     /// <param name="logger"> The logger for messages. </param>
-    /// The discovery context that contains the runsettings.
-    /// </param>
+    /// <param name="configuration">The configuration.</param>
     internal static void PopulateSettings(IDiscoveryContext? context, IMessageLogger? logger, IConfiguration? configuration)
     {
 #if !WINDOWS_UWP
@@ -916,6 +915,7 @@ private static void ParseIntegerSetting(IConfiguration configuration, string key
     /// </summary>
     /// <param name="configuration">Configuration to load the settings from.</param>
     /// <param name="logger"> The logger for messages. </param>
+    /// <param name="settings">The MSTest settings.</param>
     internal static void SetSettingsFromConfig(IConfiguration configuration, IMessageLogger? logger, MSTestSettings settings)
     {
         // Expected format of the json is: -
diff --git a/src/Adapter/MSTest.TestAdapter/PlatformServiceProvider.cs b/src/Adapter/MSTest.TestAdapter/PlatformServiceProvider.cs
index 1a5880c966..6edb8553c6 100644
--- a/src/Adapter/MSTest.TestAdapter/PlatformServiceProvider.cs
+++ b/src/Adapter/MSTest.TestAdapter/PlatformServiceProvider.cs
@@ -191,6 +191,8 @@ public ITestSourceHost CreateTestSourceHost(
     /// <param name="properties">
     /// The default set of properties the test context needs to be filled with.
     /// </param>
+    /// <param name="messageLogger">The message logger.</param>
+    /// <param name="outcome">The test outcome.</param>
     /// <returns>
     /// The <see cref="ITestContext"/> instance.
     /// </returns>
diff --git a/src/Adapter/MSTest.TestAdapter/TestingPlatformAdapter/TestApplicationBuilderExtensions.cs b/src/Adapter/MSTest.TestAdapter/TestingPlatformAdapter/TestApplicationBuilderExtensions.cs
index f16999eb17..436ce80215 100644
--- a/src/Adapter/MSTest.TestAdapter/TestingPlatformAdapter/TestApplicationBuilderExtensions.cs
+++ b/src/Adapter/MSTest.TestAdapter/TestingPlatformAdapter/TestApplicationBuilderExtensions.cs
@@ -11,9 +11,17 @@
 
 namespace Microsoft.VisualStudio.TestTools.UnitTesting;
 
+/// <summary>
+/// Extension methods for <see cref="ITestApplicationBuilder"/>.
+/// </summary>
 [SuppressMessage("ApiDesign", "RS0030:Do not use banned APIs", Justification = "We can use MTP from this folder")]
 public static class TestApplicationBuilderExtensions
 {
+    /// <summary>
+    /// Register MSTest as the test framework and register the necessary services.
+    /// </summary>
+    /// <param name="testApplicationBuilder">The test application builder on which to register.</param>
+    /// <param name="getTestAssemblies">The function to get the test assemblies.</param>
     public static void AddMSTest(this ITestApplicationBuilder testApplicationBuilder, Func<IEnumerable<Assembly>> getTestAssemblies)
     {
         MSTestExtension extension = new();
diff --git a/src/Adapter/MSTestAdapter.PlatformServices/Deployment/AssemblyLoadWorker.cs b/src/Adapter/MSTestAdapter.PlatformServices/Deployment/AssemblyLoadWorker.cs
index 848a7bc96d..323487a79f 100644
--- a/src/Adapter/MSTestAdapter.PlatformServices/Deployment/AssemblyLoadWorker.cs
+++ b/src/Adapter/MSTestAdapter.PlatformServices/Deployment/AssemblyLoadWorker.cs
@@ -79,6 +79,7 @@ public IReadOnlyCollection<string> GetFullPathToDependentAssemblies(string assem
     /// Get the target dotNet framework string for the assembly.
     /// </summary>
     /// <param name="path">Path of the assembly file.</param>
+    /// <param name="errorMessage">Error message if any.</param>
     /// <returns> String representation of the target dotNet framework e.g. .NETFramework,Version=v4.0. </returns>
     internal string GetTargetFrameworkVersionStringFromPath(string path, out string? errorMessage)
     {
diff --git a/src/Analyzers/MSTest.Analyzers/RoslynAnalyzerHelpers/CompilationExtensions.cs b/src/Analyzers/MSTest.Analyzers/RoslynAnalyzerHelpers/CompilationExtensions.cs
index e740b609c9..4147d77081 100644
--- a/src/Analyzers/MSTest.Analyzers/RoslynAnalyzerHelpers/CompilationExtensions.cs
+++ b/src/Analyzers/MSTest.Analyzers/RoslynAnalyzerHelpers/CompilationExtensions.cs
@@ -21,7 +21,8 @@ internal static class CompilationExtensions
     /// </summary>
     /// <param name="compilation">The compilation.</param>
     /// <param name="fullTypeName">Namespace + type name, e.g. "System.Exception".</param>
-    /// <returns>The <see cref="INamedTypeSymbol"/> if found, null otherwise.</returns>
+    /// <param name="namedTypeSymbol">The <see cref="INamedTypeSymbol"/> if found, null otherwise.</param>
+    /// <returns>A boolean indicating whether or not the service was found.</returns>
     internal static bool TryGetOrCreateTypeByMetadataName(this Compilation compilation, string fullTypeName, [NotNullWhen(returnValue: true)] out INamedTypeSymbol? namedTypeSymbol)
         => WellKnownTypeProvider.GetOrCreate(compilation).TryGetOrCreateTypeByMetadataName(fullTypeName, out namedTypeSymbol);
 }
diff --git a/src/Platform/Microsoft.Testing.Platform/Helpers/TestApplicationBuilderExtensions.cs b/src/Platform/Microsoft.Testing.Platform/Helpers/TestApplicationBuilderExtensions.cs
index 6ebc717cdc..6e8c3d6e6c 100644
--- a/src/Platform/Microsoft.Testing.Platform/Helpers/TestApplicationBuilderExtensions.cs
+++ b/src/Platform/Microsoft.Testing.Platform/Helpers/TestApplicationBuilderExtensions.cs
@@ -7,10 +7,18 @@
 
 namespace Microsoft.Testing.Platform.Helpers;
 
+/// <summary>
+/// A collection of extension methods for <see cref="ITestApplicationBuilder"/>.
+/// </summary>
 [Experimental("TPEXP", UrlFormat = "https://aka.ms/testingplatform/diagnostics#{0}")]
 [SuppressMessage("ApiDesign", "RS0016:Add public types and members to the declared API", Justification = "Experimental API")]
 public static class TestApplicationBuilderExtensions
 {
+    /// <summary>
+    /// Registers the command-line options provider for '--treenode-filter'.
+    /// </summary>
+    /// <param name="testApplicationBuilder">The test application builder.</param>
+    /// <param name="extension">The extension owner of the tree node filter service.</param>
     public static void AddTreeNodeFilterService(this ITestApplicationBuilder testApplicationBuilder, IExtension extension)
         => testApplicationBuilder.CommandLine.AddProvider(() => new TreeNodeFilterCommandLineOptionsProvider(extension));
 
@@ -18,6 +26,7 @@ public static void AddTreeNodeFilterService(this ITestApplicationBuilder testApp
     /// Registers the command-line options provider for '--maximum-failed-tests'.
     /// </summary>
     /// <param name="builder">The test application builder.</param>
+    /// <param name="extension">The extension owner of the maximum failed tests service.</param>
     [Experimental("TPEXP", UrlFormat = "https://aka.ms/testingplatform/diagnostics#{0}")]
     public static void AddMaximumFailedTestsService(this ITestApplicationBuilder builder, IExtension extension)
         => builder.CommandLine.AddProvider(serviceProvider => new MaxFailedTestsCommandLineOptionsProvider(extension, serviceProvider));
diff --git a/src/TestFramework/TestFramework/Assertions/CollectionAssert.cs b/src/TestFramework/TestFramework/Assertions/CollectionAssert.cs
index 1ddbe5a731..e6a53f987c 100644
--- a/src/TestFramework/TestFramework/Assertions/CollectionAssert.cs
+++ b/src/TestFramework/TestFramework/Assertions/CollectionAssert.cs
@@ -1486,6 +1486,7 @@ internal static bool IsSubsetOfHelper(ICollection subset, ICollection superset)
     /// <param name="collection">
     /// The collection to process.
     /// </param>
+    /// <param name="comparer">The equality comparer to use when comparing items.</param>
     /// <param name="nullCount">
     /// The number of null elements in the collection.
     /// </param>
@@ -1531,6 +1532,7 @@ private static Dictionary<T, int> GetElementCounts<T>(IEnumerable<T?> collection
     /// <param name="actual">
     /// The second collection to compare.
     /// </param>
+    /// <param name="comparer">The equality comparer to use when comparing items.</param>
     /// <param name="expectedCount">
     /// The expected number of occurrences of
     /// <paramref name="mismatchedElement"/> or 0 if there is no mismatched
diff --git a/src/TestFramework/TestFramework/Attributes/TestMethod/OSConditionAttribute.cs b/src/TestFramework/TestFramework/Attributes/TestMethod/OSConditionAttribute.cs
index 9827332549..ce1a2c7ccf 100644
--- a/src/TestFramework/TestFramework/Attributes/TestMethod/OSConditionAttribute.cs
+++ b/src/TestFramework/TestFramework/Attributes/TestMethod/OSConditionAttribute.cs
@@ -26,6 +26,7 @@ public sealed class OSConditionAttribute : ConditionBaseAttribute
     /// <summary>
     /// Initializes a new instance of the <see cref="OSConditionAttribute"/> class.
     /// </summary>
+    /// <param name="mode">Decides whether the OSes will be included or excluded.</param>
     /// <param name="operatingSystems">The operating systems that this test supports.</param>
     public OSConditionAttribute(ConditionMode mode, OperatingSystems operatingSystems)
         : base(mode)
diff --git a/test/Utilities/Automation.CLI/CLITestBase.e2e.cs b/test/Utilities/Automation.CLI/CLITestBase.e2e.cs
index ebbdedaae4..9b24f8647e 100644
--- a/test/Utilities/Automation.CLI/CLITestBase.e2e.cs
+++ b/test/Utilities/Automation.CLI/CLITestBase.e2e.cs
@@ -28,6 +28,7 @@ public CLITestBase()
     /// </summary>
     /// <param name="sources">Collection of test containers.</param>
     /// <param name="runSettings">Run settings for execution.</param>
+    /// <param name="targetFramework">Target framework for the test run.</param>
     public void InvokeVsTestForDiscovery(string[] sources, string runSettings = "", string targetFramework = null)
     {
         ExpandTestSourcePaths(sources, targetFramework);
@@ -44,6 +45,7 @@ public void InvokeVsTestForDiscovery(string[] sources, string runSettings = "",
     /// <param name="sources">List of test assemblies.</param>
     /// <param name="runSettings">Run settings for execution.</param>
     /// <param name="testCaseFilter">Test Case filter for execution.</param>
+    /// <param name="targetFramework">Target framework for the test run.</param>
     public void InvokeVsTestForExecution(string[] sources, string runSettings = "", string testCaseFilter = null, string targetFramework = null)
     {
         ExpandTestSourcePaths(sources, targetFramework);
@@ -297,6 +299,7 @@ private static string GetTestMethodName(string testFullName)
     /// Converts relative paths to absolute.
     /// </summary>
     /// <param name="paths">An array of file paths, elements may be modified to absolute paths.</param>
+    /// <param name="targetFramework">Target framework for the test run.</param>
     private void ExpandTestSourcePaths(string[] paths, string targetFramework = null)
     {
         for (int i = 0; i < paths.Length; i++)