diff --git a/Source/Testably.Abstractions.Testing/Storage/InMemoryStorage.cs b/Source/Testably.Abstractions.Testing/Storage/InMemoryStorage.cs
index d2e4aa601..b51377d15 100644
--- a/Source/Testably.Abstractions.Testing/Storage/InMemoryStorage.cs
+++ b/Source/Testably.Abstractions.Testing/Storage/InMemoryStorage.cs
@@ -199,8 +199,14 @@ public IEnumerable<IStorageLocation> EnumerateLocations(
 			throw ExceptionFactory.DirectoryNotFound(location.FullPath);
 		}
 
-		return EnumerateLocationsImpl(location, type, requestParentAccess, searchPattern,
-			enumerationOptions, parentContainer);
+		IDisposable parentAccess = new NoOpDisposable();
+		if (requestParentAccess)
+		{
+			parentAccess = parentContainer.RequestAccess(FileAccess.Read, FileShare.ReadWrite);
+		}
+
+		return EnumerateLocationsImpl(location, type, searchPattern,
+			enumerationOptions, parentAccess);
 	}
 
 	/// <summary>
@@ -210,17 +216,10 @@ public IEnumerable<IStorageLocation> EnumerateLocations(
 	private IEnumerable<IStorageLocation> EnumerateLocationsImpl(
 		IStorageLocation location,
 		FileSystemTypes type,
-		bool requestParentAccess,
 		string searchPattern,
 		EnumerationOptions? enumerationOptions,
-		IStorageContainer parentContainer)
+		IDisposable parentAccess)
 	{
-		IDisposable parentAccess = new NoOpDisposable();
-		if (requestParentAccess)
-		{
-			parentAccess = parentContainer.RequestAccess(FileAccess.Read, FileShare.ReadWrite);
-		}
-
 		using (parentAccess)
 		{
 			enumerationOptions ??= EnumerationOptionsHelper.Compatible;
diff --git a/Tests/Testably.Abstractions.Testing.Tests/FileSystem/DirectoryMockTests.cs b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/DirectoryMockTests.cs
new file mode 100644
index 000000000..9e8fcf62f
--- /dev/null
+++ b/Tests/Testably.Abstractions.Testing.Tests/FileSystem/DirectoryMockTests.cs
@@ -0,0 +1,69 @@
+using Testably.Abstractions.Testing.FileSystem;
+
+namespace Testably.Abstractions.Testing.Tests.FileSystem;
+
+public class DirectoryMockTests
+{
+	[Fact]
+	public async Task
+		EnumerateDirectories_UnauthorizedParentAccess_ShouldThrowUnauthorizedAccessExceptionImmediately()
+	{
+		Skip.IfNot(Test.RunsOnWindows);
+
+		string path = "foo";
+		MockFileSystem fileSystem = new();
+		IDirectoryInfo sut = fileSystem.Directory.CreateDirectory(path);
+		fileSystem.WithAccessControlStrategy(
+			new DefaultAccessControlStrategy((p, _)
+				=> !p.EndsWith(path, StringComparison.Ordinal)));
+
+		void Act() =>
+			_ = fileSystem.Directory.EnumerateDirectories(path);
+
+		await That(Act).Throws<UnauthorizedAccessException>()
+			.WithMessageContaining($"'{sut.FullName}'").And
+			.WithHResult(-2147024891);
+	}
+
+	[Fact]
+	public async Task
+		EnumerateFiles_UnauthorizedParentAccess_ShouldThrowUnauthorizedAccessExceptionImmediately()
+	{
+		Skip.IfNot(Test.RunsOnWindows);
+
+		string path = "foo";
+		MockFileSystem fileSystem = new();
+		IDirectoryInfo sut = fileSystem.Directory.CreateDirectory(path);
+		fileSystem.WithAccessControlStrategy(
+			new DefaultAccessControlStrategy((p, _)
+				=> !p.EndsWith(path, StringComparison.Ordinal)));
+
+		void Act() =>
+			_ = fileSystem.Directory.EnumerateFiles(path);
+
+		await That(Act).Throws<UnauthorizedAccessException>()
+			.WithMessageContaining($"'{sut.FullName}'").And
+			.WithHResult(-2147024891);
+	}
+
+	[Fact]
+	public async Task
+		EnumerateFileSystemEntries_UnauthorizedParentAccess_ShouldThrowUnauthorizedAccessExceptionImmediately()
+	{
+		Skip.IfNot(Test.RunsOnWindows);
+
+		string path = "foo";
+		MockFileSystem fileSystem = new();
+		IDirectoryInfo sut = fileSystem.Directory.CreateDirectory(path);
+		fileSystem.WithAccessControlStrategy(
+			new DefaultAccessControlStrategy((p, _)
+				=> !p.EndsWith(path, StringComparison.Ordinal)));
+
+		void Act() =>
+			_ = fileSystem.Directory.EnumerateFileSystemEntries(path);
+
+		await That(Act).Throws<UnauthorizedAccessException>()
+			.WithMessageContaining($"'{sut.FullName}'").And
+			.WithHResult(-2147024891);
+	}
+}