diff --git a/CompactGUI.Core/CompactGUI.Core.csproj b/CompactGUI.Core/CompactGUI.Core.csproj
index f7dd71b..25ce4f9 100644
--- a/CompactGUI.Core/CompactGUI.Core.csproj
+++ b/CompactGUI.Core/CompactGUI.Core.csproj
@@ -14,7 +14,7 @@
   <ItemGroup>
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageReference Include="K4os.Compression.LZ4.Streams" Version="1.3.8" />
-    <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.3.183">
+    <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.3.298">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/CompactGUI.Core/Estimator.cs b/CompactGUI.Core/Estimator.cs
index b482a98..d0374fe 100644
--- a/CompactGUI.Core/Estimator.cs
+++ b/CompactGUI.Core/Estimator.cs
@@ -159,7 +159,7 @@ private float EstimateCompressabilityHDD(FileStream input, long fileSize, Compre
 
     unsafe long GetFirstLcn(string fileName)
     {
-        SafeFileHandle handle = File.OpenHandle(fileName);
+        using SafeFileHandle handle = File.OpenHandle(fileName);
 
         if (handle.IsInvalid) throw new IOException("Failed to open file handle for " + fileName);
 
@@ -172,7 +172,7 @@ unsafe long GetFirstLcn(string fileName)
         uint bytesReturned = 0;
 
         var result = PInvoke.DeviceIoControl(
-            handle,
+            (Windows.Win32.Foundation.HANDLE)handle.DangerousGetHandle(),
             NTFSInterop.FSCTL_GET_RETRIEVAL_POINTERS,
             &inBuffer,
             inBufferSize,
@@ -181,6 +181,8 @@ unsafe long GetFirstLcn(string fileName)
             &bytesReturned,
             null);
 
+        GC.KeepAlive(handle);
+
         if (!result) return long.MaxValue;
 
         int extentOffset = Marshal.OffsetOf<NTFSInterop.RETRIEVAL_POINTERS_BUFFER>("Extents").ToInt32();
@@ -193,4 +195,4 @@ unsafe long GetFirstLcn(string fileName)
 
 
 
-}
+}
\ No newline at end of file
diff --git a/CompactGUI.Core/SharedMethods.cs b/CompactGUI.Core/SharedMethods.cs
index 74bca18..ae0f435 100644
--- a/CompactGUI.Core/SharedMethods.cs
+++ b/CompactGUI.Core/SharedMethods.cs
@@ -150,17 +150,14 @@ private static string GetShortPath(string filePath)
 
 
 
-    public static unsafe uint GetClusterSize(string folderPath)
+    public static uint GetClusterSize(string folderPath)
     {
-        UInt32 lpSectorsPerCluster;
-        UInt32 lpBytesPerSector;
-
         PInvoke.GetDiskFreeSpace(
             new DirectoryInfo(folderPath).Root.ToString(),
-            &lpSectorsPerCluster,
-            &lpBytesPerSector,
-            null,
-            null
+            out UInt32 lpSectorsPerCluster,
+            out UInt32 lpBytesPerSector,
+            out _,
+            out _
         );
 
         return lpSectorsPerCluster * lpBytesPerSector;
@@ -168,10 +165,9 @@ public static unsafe uint GetClusterSize(string folderPath)
     }
 
 
-    public static unsafe long GetFileSizeOnDisk(string file)
+    public static long GetFileSizeOnDisk(string file)
     {
-        uint highOrder;
-        uint lowOrder = PInvoke.GetCompressedFileSize(file, &highOrder);
+        uint lowOrder = PInvoke.GetCompressedFileSize(file, out uint highOrder);
         if (lowOrder == 0xFFFFFFFF && (Marshal.GetLastWin32Error() != 0)) return -1;
         return ((long)highOrder << 32) | lowOrder;
     }
@@ -300,4 +296,4 @@ public static bool IsDirectStorageGameFolder(string folderPath)
     }
 
 
-}
+}
\ No newline at end of file
diff --git a/CompactGUI.Core/Uncompactor.cs b/CompactGUI.Core/Uncompactor.cs
index e28b68d..db33830 100644
--- a/CompactGUI.Core/Uncompactor.cs
+++ b/CompactGUI.Core/Uncompactor.cs
@@ -147,7 +147,7 @@ private unsafe FileOperationResult WOFDecompressFile(string file)
             using (SafeFileHandle fs = File.OpenHandle(file))
             {
                 bool succeeded = PInvoke.DeviceIoControl(
-                    fs,
+                    (Windows.Win32.Foundation.HANDLE)fs.DangerousGetHandle(),
                     WOFHelper.FSCTL_DELETE_EXTERNAL_BACKING,
                     null,
                     0,
@@ -156,6 +156,8 @@ private unsafe FileOperationResult WOFDecompressFile(string file)
                     null,
                     null);
 
+                GC.KeepAlive(fs);
+
                 if (succeeded) return new FileOperationResult(true);
 
                 int errorCode = Marshal.GetLastWin32Error();
@@ -205,4 +207,4 @@ public void Dispose()
 
 
 
-}
+}
\ No newline at end of file
diff --git a/CompactGUI.Core/WOFHelper.cs b/CompactGUI.Core/WOFHelper.cs
index 0581f63..32fb525 100644
--- a/CompactGUI.Core/WOFHelper.cs
+++ b/CompactGUI.Core/WOFHelper.cs
@@ -102,7 +102,7 @@ public static unsafe WOFCompressionAlgorithm DetectCompression(FileInfo fileInfo
         WOFHelper.WOF_FILE_COMPRESSION_INFO_V1 info;
         uint buffer = 8;
 
-        var ret = PInvoke.WofIsExternalFile(fileInfo.FullName, &isExternalFile, &provider, &info, &buffer);
+        var ret = PInvoke.WofIsExternalFile(fileInfo.FullName, out isExternalFile, out provider, &info, ref buffer);
 
         WOFCompressionAlgorithm algorithm = (WOFCompressionAlgorithm)info.Algorithm;
 
@@ -112,4 +112,4 @@ public static unsafe WOFCompressionAlgorithm DetectCompression(FileInfo fileInfo
         return algorithm;
 
     }
-}
+}
\ No newline at end of file