diff --git a/src/Microsoft.PowerShell.ConsoleHost/host/msh/ConsoleHost.cs b/src/Microsoft.PowerShell.ConsoleHost/host/msh/ConsoleHost.cs
index 2541435d203..002f51b8c3c 100644
--- a/src/Microsoft.PowerShell.ConsoleHost/host/msh/ConsoleHost.cs
+++ b/src/Microsoft.PowerShell.ConsoleHost/host/msh/ConsoleHost.cs
@@ -126,8 +126,7 @@ internal static int Start(
 #if UNIX
                 profileDir = Platform.SelectProductNameForDirectory(Platform.XDG_Type.CACHE);
 #else
-                profileDir = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) +
-                    @"\Microsoft\Windows\PowerShell";
+                profileDir = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + @"\Microsoft\PowerShell";
 
                 if (!Directory.Exists(profileDir))
                 {
diff --git a/src/System.Management.Automation/engine/InitialSessionState.cs b/src/System.Management.Automation/engine/InitialSessionState.cs
index 2b745bbe786..811a5274b15 100644
--- a/src/System.Management.Automation/engine/InitialSessionState.cs
+++ b/src/System.Management.Automation/engine/InitialSessionState.cs
@@ -2651,16 +2651,16 @@ private Exception ProcessUserDrive(Runspace initializedRunspace)
                 }
 
                 // Create the User drive path directory in current user local appdata location:
-                // SystemDrive\Users\[user]\AppData\Local\Microsoft\Windows\PowerShell\DriveRoots\[UserName]
+                // SystemDrive\Users\[user]\AppData\Local\Microsoft\PowerShell\DriveRoots\[UserName]
                 // Or for virtual accounts
-                // WinDir\System32\Microsoft\Windows\PowerShell\DriveRoots\[UserName]
+                // WinDir\System32\Microsoft\PowerShell\DriveRoots\[UserName]
                 string directoryName = MakeUserNamePath();
 #if UNIX
                 string userDrivePath = Path.Combine(Platform.SelectProductNameForDirectory(Platform.XDG_Type.CACHE), "DriveRoots", directoryName);
 #else
                 string userDrivePath = Path.Combine(
                     Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
-                    @"Microsoft\Windows\PowerShell\DriveRoots",
+                    @"Microsoft\PowerShell\DriveRoots",
                     directoryName);
 #endif
 
diff --git a/test/powershell/Host/Startup.Tests.ps1 b/test/powershell/Host/Startup.Tests.ps1
new file mode 100644
index 00000000000..8570d6c8a67
--- /dev/null
+++ b/test/powershell/Host/Startup.Tests.ps1
@@ -0,0 +1,128 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+Describe "Validate start of console host" -Tag CI {
+    BeforeAll {
+        $allowedAssemblies = @(
+            'Microsoft.ApplicationInsights.dll'
+            'Microsoft.Management.Infrastructure.dll'
+            'Microsoft.PowerShell.ConsoleHost.dll'
+            'Microsoft.PowerShell.Security.dll'
+            'Microsoft.Win32.Primitives.dll'
+            'Microsoft.Win32.Registry.dll'
+            'netstandard.dll'
+            'Newtonsoft.Json.dll'
+            'pwsh.dll'
+            'System.Buffers.dll'
+            'System.Collections.Concurrent.dll'
+            'System.Collections.dll'
+            'System.Collections.NonGeneric.dll'
+            'System.Collections.Specialized.dll'
+            'System.ComponentModel.dll'
+            'System.ComponentModel.Primitives.dll'
+            'System.ComponentModel.TypeConverter.dll'
+            'System.Console.dll'
+            'System.Data.Common.dll'
+            'System.Diagnostics.Debug.dll'
+            'System.Diagnostics.FileVersionInfo.dll'
+            'System.Diagnostics.Process.dll'
+            'System.Diagnostics.Tools.dll'
+            'System.Diagnostics.TraceSource.dll'
+            'System.Diagnostics.Tracing.dll'
+            'System.Globalization.dll'
+            'System.IO.FileSystem.AccessControl.dll'
+            'System.IO.FileSystem.dll'
+            'System.IO.FileSystem.DriveInfo.dll'
+            'System.IO.Pipes.dll'
+            'System.Linq.dll'
+            'System.Linq.Expressions.dll'
+            'System.Management.Automation.dll'
+            'System.Memory.dll'
+            'System.Net.Mail.dll'
+            'System.Net.NetworkInformation.dll'
+            'System.Net.Primitives.dll'
+            'System.ObjectModel.dll'
+            'System.Private.CoreLib.dll'
+            'System.Private.Uri.dll'
+            'System.Private.Xml.dll'
+            'System.Private.Xml.Linq.dll'
+            'System.Reflection.dll'
+            'System.Reflection.Emit.ILGeneration.dll'
+            'System.Reflection.Emit.Lightweight.dll'
+            'System.Reflection.Extensions.dll'
+            'System.Reflection.Primitives.dll'
+            'System.Resources.ResourceManager.dll'
+            'System.Runtime.dll'
+            'System.Runtime.Extensions.dll'
+            'System.Runtime.InteropServices.dll'
+            'System.Runtime.InteropServices.RuntimeInformation.dll'
+            'System.Runtime.Loader.dll'
+            'System.Runtime.Numerics.dll'
+            'System.Runtime.Serialization.Formatters.dll'
+            'System.Runtime.Serialization.Primitives.dll'
+            'System.Security.AccessControl.dll'
+            'System.Security.Cryptography.Encoding.dll'
+            'System.Security.Cryptography.Primitives.dll'
+            'System.Security.Cryptography.X509Certificates.dll'
+            'System.Security.Principal.dll'
+            'System.Security.Principal.Windows.dll'
+            'System.Text.Encoding.Extensions.dll'
+            'System.Text.RegularExpressions.dll'
+            'System.Threading.dll'
+            'System.Threading.Tasks.dll'
+            'System.Threading.Tasks.Parallel.dll'
+            'System.Threading.Thread.dll'
+            'System.Threading.Timer.dll'
+            'System.Xml.ReaderWriter.dll'
+            'System.Xml.XDocument.dll'
+        )
+
+        if ($IsWindows) {
+            $allowedAssemblies += @(
+                'Microsoft.PowerShell.CoreCLR.Eventing.dll'
+                'System.DirectoryServices.dll'
+                'System.Management.dll'
+                'System.Security.Claims.dll'
+                'System.Threading.Overlapped.dll'
+            )
+        }
+        else {
+            $allowedAssemblies += @(
+                'System.Collections.Immutable.dll'
+                'System.IO.MemoryMappedFiles.dll'
+                'System.Net.Sockets.dll'
+                'System.Reflection.Metadata.dll'
+            )
+        }
+
+        if ($IsWindows) {
+            $profileDataFile = Join-Path $env:LOCALAPPDATA "Microsoft\PowerShell\StartupProfileData-NonInteractive"
+        } else {
+            $profileDataFile = Join-Path ([System.Management.Automation.Platform]::SelectProductNameForDirectory("CACHE")) "StartupProfileData-NonInteractive"
+        }
+
+        if (Test-Path $profileDataFile) {
+            Remove-Item $profileDataFile -Force
+        }
+
+        $loadedAssemblies = pwsh -noprofile -command '([System.AppDomain]::CurrentDomain.GetAssemblies()).manifestmodule | Where-Object { $_.Name -notlike ""<*>"" } | ForEach-Object { $_.Name }'
+    }
+
+    It "No new assemblies are loaded" {
+        $diffs = Compare-Object -ReferenceObject $allowedAssemblies -DifferenceObject $loadedAssemblies
+
+        if ($null -ne $diffs) {
+            $assembliesAllowedButNotLoaded = $diffs | Where-Object SideIndicator -eq "<=" | ForEach-Object InputObject
+            $assembliesLoadedButNotAllowed = $diffs | Where-Object SideIndicator -eq "=>" | ForEach-Object InputObject
+
+            if ($assembliesAllowedButNotLoaded) {
+                Write-Host ("Assemblies that are expected but not loaded: {0}" -f ($assembliesAllowedButNotLoaded -join ", "))
+            }
+            if ($assembliesLoadedButNotAllowed) {
+                Write-Host ("Assemblies that are loaded but not expected: {0}" -f ($assembliesLoadedButNotAllowed -join ", "))
+            }
+        }
+
+        $diffs | Should -BeExactly $null
+    }
+}