diff --git a/src/System.Management.Automation/utils/ClrFacade.cs b/src/System.Management.Automation/utils/ClrFacade.cs
index 0638891eaa2..ca2131f727e 100644
--- a/src/System.Management.Automation/utils/ClrFacade.cs
+++ b/src/System.Management.Automation/utils/ClrFacade.cs
@@ -2,24 +2,16 @@
 // Licensed under the MIT License.
 
 using System.Collections.Generic;
-using System.Diagnostics;
-using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
 using System.IO;
-using System.Linq;
 using System.Management.Automation.Internal;
 using System.Management.Automation.Language;
 using System.Reflection;
-using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
-using System.Runtime.InteropServices.ComTypes;
 using System.Runtime.Loader;
 using System.Security;
 using System.Text;
 using System.Text.RegularExpressions;
-using System.Threading;
-
-using Microsoft.Win32.SafeHandles;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs b/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs
index 0e855a8914b..27946faa715 100644
--- a/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs
+++ b/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs
@@ -4,7 +4,6 @@
 using System.Collections.ObjectModel;
 using System.Management.Automation.Internal;
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 using System.Text;
 
 namespace System.Management.Automation
diff --git a/src/System.Management.Automation/utils/EncodingUtils.cs b/src/System.Management.Automation/utils/EncodingUtils.cs
index b5859155d1c..33ff3c7f598 100644
--- a/src/System.Management.Automation/utils/EncodingUtils.cs
+++ b/src/System.Management.Automation/utils/EncodingUtils.cs
@@ -2,8 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Collections.Generic;
-using System.Globalization;
-using System.IO;
 using System.Text;
 
 using System.Management.Automation.Internal;
diff --git a/src/System.Management.Automation/utils/ExecutionExceptions.cs b/src/System.Management.Automation/utils/ExecutionExceptions.cs
index aa779ffcdeb..ed8ced4da81 100644
--- a/src/System.Management.Automation/utils/ExecutionExceptions.cs
+++ b/src/System.Management.Automation/utils/ExecutionExceptions.cs
@@ -7,7 +7,6 @@
 using System.Runtime.Serialization;
 using System.Diagnostics.CodeAnalysis;
 using System.Management.Automation.Internal;
-using System.Security.Permissions;
 
 #pragma warning disable 1634, 1691 // Stops compiler from warning about unknown warnings
 
diff --git a/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs b/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs
index db68073deb4..d63210b5502 100644
--- a/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs
+++ b/src/System.Management.Automation/utils/FormatAndTypeDataHelper.cs
@@ -5,9 +5,7 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.IO;
-using System.Management.Automation.Host;
 using System.Management.Automation.Internal;
-using System.Reflection;
 using System.Text;
 
 namespace System.Management.Automation.Runspaces
diff --git a/src/System.Management.Automation/utils/FuzzyMatch.cs b/src/System.Management.Automation/utils/FuzzyMatch.cs
index 3052cf6e3f2..5b21022a6ef 100644
--- a/src/System.Management.Automation/utils/FuzzyMatch.cs
+++ b/src/System.Management.Automation/utils/FuzzyMatch.cs
@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-using System;
 using System.Globalization;
 
 namespace System.Management.Automation
diff --git a/src/System.Management.Automation/utils/IObjectReader.cs b/src/System.Management.Automation/utils/IObjectReader.cs
index a4fb4a53f37..c2ef1d6cf32 100644
--- a/src/System.Management.Automation/utils/IObjectReader.cs
+++ b/src/System.Management.Automation/utils/IObjectReader.cs
@@ -5,8 +5,6 @@
 using System.Collections.ObjectModel;
 using System.Threading;
 
-using Dbg = System.Management.Automation.Diagnostics;
-
 namespace System.Management.Automation.Runspaces
 {
     /// <summary>
diff --git a/src/System.Management.Automation/utils/IObjectWriter.cs b/src/System.Management.Automation/utils/IObjectWriter.cs
index eaed1ef5e55..283aa6c3eb4 100644
--- a/src/System.Management.Automation/utils/IObjectWriter.cs
+++ b/src/System.Management.Automation/utils/IObjectWriter.cs
@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-using System;
 using System.Collections;
 using System.Threading;
 
diff --git a/src/System.Management.Automation/utils/MshArgumentException.cs b/src/System.Management.Automation/utils/MshArgumentException.cs
index 73a117d107f..ab3a378b265 100644
--- a/src/System.Management.Automation/utils/MshArgumentException.cs
+++ b/src/System.Management.Automation/utils/MshArgumentException.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/MshArgumentNullException.cs b/src/System.Management.Automation/utils/MshArgumentNullException.cs
index 95d5dfa00df..0a5dd47f7f1 100644
--- a/src/System.Management.Automation/utils/MshArgumentNullException.cs
+++ b/src/System.Management.Automation/utils/MshArgumentNullException.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs b/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs
index 158354bcc7e..3cd3fbc7c60 100644
--- a/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs
+++ b/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/MshInvalidOperationException.cs b/src/System.Management.Automation/utils/MshInvalidOperationException.cs
index f09671cbde1..46cd341ff53 100644
--- a/src/System.Management.Automation/utils/MshInvalidOperationException.cs
+++ b/src/System.Management.Automation/utils/MshInvalidOperationException.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/MshNotImplementedException.cs b/src/System.Management.Automation/utils/MshNotImplementedException.cs
index 463be0dc053..45cbe654f21 100644
--- a/src/System.Management.Automation/utils/MshNotImplementedException.cs
+++ b/src/System.Management.Automation/utils/MshNotImplementedException.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/MshNotSupportedException.cs b/src/System.Management.Automation/utils/MshNotSupportedException.cs
index f438596d524..d1824f5c051 100644
--- a/src/System.Management.Automation/utils/MshNotSupportedException.cs
+++ b/src/System.Management.Automation/utils/MshNotSupportedException.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/MshObjectDisposedException.cs b/src/System.Management.Automation/utils/MshObjectDisposedException.cs
index 53204ab2a6c..853b5bf348c 100644
--- a/src/System.Management.Automation/utils/MshObjectDisposedException.cs
+++ b/src/System.Management.Automation/utils/MshObjectDisposedException.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/ObjectReader.cs b/src/System.Management.Automation/utils/ObjectReader.cs
index deb056a180e..40fa22f509b 100644
--- a/src/System.Management.Automation/utils/ObjectReader.cs
+++ b/src/System.Management.Automation/utils/ObjectReader.cs
@@ -1,9 +1,7 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-using System;
 using System.Collections.ObjectModel;
-using System.Management.Automation;
 using System.Management.Automation.Runspaces;
 using System.Runtime.InteropServices;
 using System.Threading;
diff --git a/src/System.Management.Automation/utils/ParameterBinderExceptions.cs b/src/System.Management.Automation/utils/ParameterBinderExceptions.cs
index 4a7fa883167..6cff7b1aca2 100644
--- a/src/System.Management.Automation/utils/ParameterBinderExceptions.cs
+++ b/src/System.Management.Automation/utils/ParameterBinderExceptions.cs
@@ -4,7 +4,6 @@
 using System.Management.Automation.Internal;
 using System.Management.Automation.Language;
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/PlatformInvokes.cs b/src/System.Management.Automation/utils/PlatformInvokes.cs
index 516d7059470..6d76f8feb1a 100644
--- a/src/System.Management.Automation/utils/PlatformInvokes.cs
+++ b/src/System.Management.Automation/utils/PlatformInvokes.cs
@@ -2,9 +2,7 @@
 // Licensed under the MIT License.
 
 using System.Diagnostics.CodeAnalysis;
-using System.Runtime.ConstrainedExecution;
 using System.Runtime.InteropServices;
-using System.Security.Permissions;
 
 using Microsoft.Win32.SafeHandles;
 
diff --git a/src/System.Management.Automation/utils/RuntimeException.cs b/src/System.Management.Automation/utils/RuntimeException.cs
index 3a2cbd5c05f..52539339cbe 100644
--- a/src/System.Management.Automation/utils/RuntimeException.cs
+++ b/src/System.Management.Automation/utils/RuntimeException.cs
@@ -3,7 +3,6 @@
 
 using System.Management.Automation.Language;
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {
diff --git a/src/System.Management.Automation/utils/SessionStateExceptions.cs b/src/System.Management.Automation/utils/SessionStateExceptions.cs
index e5394a5130b..57788da5059 100644
--- a/src/System.Management.Automation/utils/SessionStateExceptions.cs
+++ b/src/System.Management.Automation/utils/SessionStateExceptions.cs
@@ -4,7 +4,6 @@
 using System.Collections.ObjectModel;
 using System.Management.Automation.Internal;
 using System.Runtime.Serialization;
-using System.Security.Permissions;
 
 namespace System.Management.Automation
 {