diff --git a/Assets/VRM10/Samples~/URPSample/Runtime/FileDialogForWindows.cs b/Assets/VRM10/Samples~/URPSample/Runtime/FileDialogForWindows.cs
new file mode 100644
index 000000000..ebb0f9f04
--- /dev/null
+++ b/Assets/VRM10/Samples~/URPSample/Runtime/FileDialogForWindows.cs
@@ -0,0 +1,118 @@
+#if UNITY_STANDALONE_WIN
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+#endif
+
+
+namespace UniVRM10.URPSample
+{
+    public static class FileDialogForWindows
+    {
+#if UNITY_STANDALONE_WIN
+        #region GetOpenFileName
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
+        public class OpenFileName
+        {
+            public int structSize = 0;
+            public IntPtr dlgOwner = IntPtr.Zero;
+            public IntPtr instance = IntPtr.Zero;
+            public String filter = null;
+            public String customFilter = null;
+            public int maxCustFilter = 0;
+            public int filterIndex = 0;
+            public String file = null;
+            public int maxFile = 0;
+            public String fileTitle = null;
+            public int maxFileTitle = 0;
+            public String initialDir = null;
+            public String title = null;
+            public int flags = 0;
+            public short fileOffset = 0;
+            public short fileExtension = 0;
+            public String defExt = null;
+            public IntPtr custData = IntPtr.Zero;
+            public IntPtr hook = IntPtr.Zero;
+            public String templateName = null;
+            public IntPtr reservedPtr = IntPtr.Zero;
+            public int reservedInt = 0;
+            public int flagsEx = 0;
+        }
+
+        [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
+        public static extern bool GetOpenFileName([In, Out] OpenFileName ofn);
+        /*
+        public static bool GetOpenFileName1([In, Out] OpenFileName ofn)
+        {
+            return GetOpenFileName(ofn);
+        }
+        */
+
+        [DllImport("Comdlg32.dll", SetLastError = true, CharSet = CharSet.Auto)]
+        private static extern bool GetSaveFileName([In, Out] OpenFileName ofn);
+
+        static string Filter(params string[] filters)
+        {
+            return string.Join("\0", filters) + "\0";
+        }
+        public static string FileDialog(string title, params string[] extensions)
+        {
+            OpenFileName ofn = new OpenFileName();
+            ofn.structSize = Marshal.SizeOf(ofn);
+
+            var filters = new List<string>();
+            filters.Add("All Files"); filters.Add("*.*");
+            foreach (var ext in extensions)
+            {
+                filters.Add(ext); filters.Add("*" + ext);
+            }
+            ofn.filter = Filter(filters.ToArray());
+            ofn.filterIndex = 2;
+            ofn.file = new string(new char[256]);
+            ofn.maxFile = ofn.file.Length;
+            ofn.fileTitle = new string(new char[64]);
+            ofn.maxFileTitle = ofn.fileTitle.Length;
+            ofn.initialDir = UnityEngine.Application.dataPath;
+            ofn.title = title;
+            //ofn.defExt = "PNG";
+            ofn.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;//OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT|OFN_NOCHANGEDIR
+            if (!GetOpenFileName(ofn))
+            {
+                return null;
+            }
+
+            return ofn.file;
+        }
+        public static string SaveDialog(string title, string path)
+        {
+            var extension = Path.GetExtension(path);
+            OpenFileName ofn = new OpenFileName();
+            ofn.structSize = Marshal.SizeOf(ofn);
+            ofn.filter = Filter("All Files", "*.*", extension, "*" + extension);
+            ofn.filterIndex = 2;
+            var chars = new char[256];
+            var it = Path.GetFileName(path).GetEnumerator();
+            for (int i = 0; i < chars.Length && it.MoveNext(); ++i)
+            {
+                chars[i] = it.Current;
+            }
+            ofn.file = new string(chars);
+            ofn.maxFile = ofn.file.Length;
+            ofn.fileTitle = new string(new char[64]);
+            ofn.maxFileTitle = ofn.fileTitle.Length;
+            ofn.initialDir = Path.GetDirectoryName(path);
+            ofn.title = title;
+            //ofn.defExt = "PNG";
+            ofn.flags = 0x00000002 | 0x00000004; // OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY;
+            if (!GetSaveFileName(ofn))
+            {
+                return null;
+            }
+
+            return ofn.file;
+        }
+        #endregion
+#endif
+    }
+}
diff --git a/Assets/VRM10/Samples~/URPSample/Runtime/FileDialogForWindows.cs.meta b/Assets/VRM10/Samples~/URPSample/Runtime/FileDialogForWindows.cs.meta
new file mode 100644
index 000000000..fed06e8ba
--- /dev/null
+++ b/Assets/VRM10/Samples~/URPSample/Runtime/FileDialogForWindows.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6fa585f671dfa0f4abbaab78424a9489
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/VRM10/Samples~/URPSample/Runtime/UrpSampleUI.cs b/Assets/VRM10/Samples~/URPSample/Runtime/UrpSampleUI.cs
index d06dda633..b952b4786 100644
--- a/Assets/VRM10/Samples~/URPSample/Runtime/UrpSampleUI.cs
+++ b/Assets/VRM10/Samples~/URPSample/Runtime/UrpSampleUI.cs
@@ -1,6 +1,5 @@
 using System;
 using UniGLTF;
-using UnityEditor;
 using UnityEngine;
 using UnityEngine.UI;
 
@@ -24,7 +23,13 @@ namespace UniVRM10.URPSample
                 Destroy(_loadedVrm.gameObject);
             }
             
-            var path = EditorUtility.OpenFilePanel("Open VRM", "", "VRM");
+#if UNITY_STANDALONE_WIN
+            var path = FileDialogForWindows.FileDialog("open VRM", "vrm");
+#elif UNITY_EDITOR
+            var path = UnityEditor.EditorUtility.OpenFilePanel("Open VRM", "", "vrm");
+#else
+            var path = Application.dataPath + "/default.vrm";
+#endif            
             if (string.IsNullOrEmpty(path))
             {
                 return;
diff --git a/Assets/VRM10_Samples/URPSample/Runtime/FileDialogForWindows.cs b/Assets/VRM10_Samples/URPSample/Runtime/FileDialogForWindows.cs
new file mode 100644
index 000000000..ebb0f9f04
--- /dev/null
+++ b/Assets/VRM10_Samples/URPSample/Runtime/FileDialogForWindows.cs
@@ -0,0 +1,118 @@
+#if UNITY_STANDALONE_WIN
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+#endif
+
+
+namespace UniVRM10.URPSample
+{
+    public static class FileDialogForWindows
+    {
+#if UNITY_STANDALONE_WIN
+        #region GetOpenFileName
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
+        public class OpenFileName
+        {
+            public int structSize = 0;
+            public IntPtr dlgOwner = IntPtr.Zero;
+            public IntPtr instance = IntPtr.Zero;
+            public String filter = null;
+            public String customFilter = null;
+            public int maxCustFilter = 0;
+            public int filterIndex = 0;
+            public String file = null;
+            public int maxFile = 0;
+            public String fileTitle = null;
+            public int maxFileTitle = 0;
+            public String initialDir = null;
+            public String title = null;
+            public int flags = 0;
+            public short fileOffset = 0;
+            public short fileExtension = 0;
+            public String defExt = null;
+            public IntPtr custData = IntPtr.Zero;
+            public IntPtr hook = IntPtr.Zero;
+            public String templateName = null;
+            public IntPtr reservedPtr = IntPtr.Zero;
+            public int reservedInt = 0;
+            public int flagsEx = 0;
+        }
+
+        [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
+        public static extern bool GetOpenFileName([In, Out] OpenFileName ofn);
+        /*
+        public static bool GetOpenFileName1([In, Out] OpenFileName ofn)
+        {
+            return GetOpenFileName(ofn);
+        }
+        */
+
+        [DllImport("Comdlg32.dll", SetLastError = true, CharSet = CharSet.Auto)]
+        private static extern bool GetSaveFileName([In, Out] OpenFileName ofn);
+
+        static string Filter(params string[] filters)
+        {
+            return string.Join("\0", filters) + "\0";
+        }
+        public static string FileDialog(string title, params string[] extensions)
+        {
+            OpenFileName ofn = new OpenFileName();
+            ofn.structSize = Marshal.SizeOf(ofn);
+
+            var filters = new List<string>();
+            filters.Add("All Files"); filters.Add("*.*");
+            foreach (var ext in extensions)
+            {
+                filters.Add(ext); filters.Add("*" + ext);
+            }
+            ofn.filter = Filter(filters.ToArray());
+            ofn.filterIndex = 2;
+            ofn.file = new string(new char[256]);
+            ofn.maxFile = ofn.file.Length;
+            ofn.fileTitle = new string(new char[64]);
+            ofn.maxFileTitle = ofn.fileTitle.Length;
+            ofn.initialDir = UnityEngine.Application.dataPath;
+            ofn.title = title;
+            //ofn.defExt = "PNG";
+            ofn.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;//OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT|OFN_NOCHANGEDIR
+            if (!GetOpenFileName(ofn))
+            {
+                return null;
+            }
+
+            return ofn.file;
+        }
+        public static string SaveDialog(string title, string path)
+        {
+            var extension = Path.GetExtension(path);
+            OpenFileName ofn = new OpenFileName();
+            ofn.structSize = Marshal.SizeOf(ofn);
+            ofn.filter = Filter("All Files", "*.*", extension, "*" + extension);
+            ofn.filterIndex = 2;
+            var chars = new char[256];
+            var it = Path.GetFileName(path).GetEnumerator();
+            for (int i = 0; i < chars.Length && it.MoveNext(); ++i)
+            {
+                chars[i] = it.Current;
+            }
+            ofn.file = new string(chars);
+            ofn.maxFile = ofn.file.Length;
+            ofn.fileTitle = new string(new char[64]);
+            ofn.maxFileTitle = ofn.fileTitle.Length;
+            ofn.initialDir = Path.GetDirectoryName(path);
+            ofn.title = title;
+            //ofn.defExt = "PNG";
+            ofn.flags = 0x00000002 | 0x00000004; // OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY;
+            if (!GetSaveFileName(ofn))
+            {
+                return null;
+            }
+
+            return ofn.file;
+        }
+        #endregion
+#endif
+    }
+}
diff --git a/Assets/VRM10_Samples/URPSample/Runtime/FileDialogForWindows.cs.meta b/Assets/VRM10_Samples/URPSample/Runtime/FileDialogForWindows.cs.meta
new file mode 100644
index 000000000..fed06e8ba
--- /dev/null
+++ b/Assets/VRM10_Samples/URPSample/Runtime/FileDialogForWindows.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6fa585f671dfa0f4abbaab78424a9489
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/VRM10_Samples/URPSample/Runtime/UrpSampleUI.cs b/Assets/VRM10_Samples/URPSample/Runtime/UrpSampleUI.cs
index d06dda633..b952b4786 100644
--- a/Assets/VRM10_Samples/URPSample/Runtime/UrpSampleUI.cs
+++ b/Assets/VRM10_Samples/URPSample/Runtime/UrpSampleUI.cs
@@ -1,6 +1,5 @@
 using System;
 using UniGLTF;
-using UnityEditor;
 using UnityEngine;
 using UnityEngine.UI;
 
@@ -24,7 +23,13 @@ namespace UniVRM10.URPSample
                 Destroy(_loadedVrm.gameObject);
             }
             
-            var path = EditorUtility.OpenFilePanel("Open VRM", "", "VRM");
+#if UNITY_STANDALONE_WIN
+            var path = FileDialogForWindows.FileDialog("open VRM", "vrm");
+#elif UNITY_EDITOR
+            var path = UnityEditor.EditorUtility.OpenFilePanel("Open VRM", "", "vrm");
+#else
+            var path = Application.dataPath + "/default.vrm";
+#endif            
             if (string.IsNullOrEmpty(path))
             {
                 return;