diff --git a/ScreenCast.Core/Services/FileTransferService.cs b/ScreenCast.Core/Services/FileTransferService.cs
index 68779ed0f..ab074506c 100644
--- a/ScreenCast.Core/Services/FileTransferService.cs
+++ b/ScreenCast.Core/Services/FileTransferService.cs
@@ -11,6 +11,7 @@
 using System.Threading;
 using Microsoft.Extensions.Logging;
 using System.Collections.Concurrent;
+using Remotely.Shared.Win32;
 
 namespace Remotely.ScreenCast.Core.Services
 {
@@ -23,9 +24,10 @@ public interface IFileTransferService
 
     public class FileTransferService : IFileTransferService
     {
-        private static readonly ConcurrentDictionary<string, FileStream> _partialTransfers = new ConcurrentDictionary<string, FileStream>();
+        private static readonly ConcurrentDictionary<string, FileStream> partialTransfers = new ConcurrentDictionary<string, FileStream>();
 
-        private static readonly SemaphoreSlim _writeLock = new SemaphoreSlim(1);
+        private static readonly SemaphoreSlim writeLock = new SemaphoreSlim(1);
+        private static volatile bool messageBoxPending;
 
         public string GetBaseDirectory()
         {
@@ -48,7 +50,7 @@ public async Task ReceiveFile(byte[] buffer, string fileName, string messageId,
         {
             try
             {
-                await _writeLock.WaitAsync();
+                await writeLock.WaitAsync();
 
                 var baseDir = GetBaseDirectory();
 
@@ -71,10 +73,10 @@ public async Task ReceiveFile(byte[] buffer, string fileName, string messageId,
                     File.Create(filePath).Close();
                     SetFileOrFolderPermissions(filePath);
                     var fs = new FileStream(filePath, FileMode.OpenOrCreate);
-                    _partialTransfers.AddOrUpdate(messageId, fs, (k,v) => fs);
+                    partialTransfers.AddOrUpdate(messageId, fs, (k,v) => fs);
                 }
 
-                var fileStream = _partialTransfers[messageId];
+                var fileStream = partialTransfers[messageId];
 
                 if (buffer?.Length > 0)
                 {
@@ -85,7 +87,7 @@ public async Task ReceiveFile(byte[] buffer, string fileName, string messageId,
                 if (endOfFile)
                 {
                     fileStream.Close();
-                    _partialTransfers.Remove(messageId, out _);
+                    partialTransfers.Remove(messageId, out _);
                     if (EnvironmentHelper.IsWindows)
                     {
                         Process.Start("explorer.exe", baseDir);
@@ -98,7 +100,12 @@ public async Task ReceiveFile(byte[] buffer, string fileName, string messageId,
             }
             finally
             {
-                _writeLock.Release();
+                writeLock.Release();
+
+                if (endOfFile)
+                {
+                    await Task.Run(ShowTransferComplete);
+                }
             }
         }
 
@@ -149,5 +156,29 @@ private void SetFileOrFolderPermissions(string path)
                 }
             }
         }
+
+        private void ShowTransferComplete()
+        {
+            // Prevent multiple dialogs from popping up.
+            if (!messageBoxPending)
+            {
+                if (EnvironmentHelper.IsWindows)
+                {
+                    messageBoxPending = true;
+                    var result = Win32Interop.ShowMessageBox(IntPtr.Zero,
+                                    "File transfer complete.  Show folder?",
+                                    "Transfer Complete",
+                                    User32.MessageBoxType.MB_YESNO | 
+                                    User32.MessageBoxType.MB_ICONINFORMATION |
+                                    User32.MessageBoxType.MB_TOPMOST);
+
+                    if (result == User32.MessageBoxResult.IDYES)
+                    {
+                        Process.Start("explorer.exe", GetBaseDirectory());
+                    }
+                    messageBoxPending = false;
+                }
+            }
+        }
     }
 }
diff --git a/Shared/Win32/User32.cs b/Shared/Win32/User32.cs
index df23acd9a..90e3ab32d 100644
--- a/Shared/Win32/User32.cs
+++ b/Shared/Win32/User32.cs
@@ -1000,6 +1000,51 @@ public enum InputType : uint
             KEYBOARD = 1,
             HARDWARE = 2
         }
+        public enum MessageBoxType : long
+        {
+            MB_ABORTRETRYIGNORE = 0x00000002L,
+            MB_CANCELTRYCONTINUE = 0x00000006L,
+            MB_HELP = 0x00004000L,
+            MB_OK = 0x00000000L,
+            MB_OKCANCEL = 0x00000001L,
+            MB_RETRYCANCEL = 0x00000005L,
+            MB_YESNO = 0x00000004L,
+            MB_YESNOCANCEL = 0x00000003L,
+            MB_ICONEXCLAMATION = 0x00000030L,
+            MB_ICONWARNING = 0x00000030L,
+            MB_ICONINFORMATION = 0x00000040L,
+            MB_ICONASTERISK = 0x00000040L,
+            MB_ICONQUESTION = 0x00000020L,
+            MB_ICONSTOP = 0x00000010L,
+            MB_ICONERROR = 0x00000010L,
+            MB_ICONHAND = 0x00000010L,
+            MB_DEFBUTTON1 = 0x00000000L,
+            MB_DEFBUTTON2 = 0x00000100L,
+            MB_DEFBUTTON3 = 0x00000200L,
+            MB_DEFBUTTON4 = 0x00000300L,
+            MB_APPLMODAL = 0x00000000L,
+            MB_SYSTEMMODAL = 0x00001000L,
+            MB_TASKMODAL = 0x00002000L,
+            MB_DEFAULT_DESKTOP_ONLY = 0x00020000L,
+            MB_RIGHT = 0x00080000L,
+            MB_RTLREADING = 0x00100000L,
+            MB_SETFOREGROUND = 0x00010000L,
+            MB_TOPMOST = 0x00040000L,
+            MB_SERVICE_NOTIFICATION = 0x00200000L
+        }
+
+        public enum MessageBoxResult : int
+        {
+            IDABORT = 3,
+            IDCANCEL = 2,
+            IDCONTINUE = 11,
+            IDIGNORE = 5,
+            IDNO = 7,
+            IDOK = 1,
+            IDRETRY = 4,
+            IDTRYAGAIN = 10,
+            IDYES = 6,
+        }
         #endregion
 
         #region Structs
@@ -1249,6 +1294,8 @@ public static extern int SystemParametersInfo(
         [return: MarshalAs(UnmanagedType.Bool)]
         public static extern bool BlockInput([MarshalAs(UnmanagedType.Bool)] bool fBlockIt);
 
+        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
+        public static extern int MessageBox(IntPtr hWnd, string text, string caption, long type);
 
         #endregion
     }
diff --git a/Shared/Win32/Win32Interop.cs b/Shared/Win32/Win32Interop.cs
index 66fc87383..2c8984a07 100644
--- a/Shared/Win32/Win32Interop.cs
+++ b/Shared/Win32/Win32Interop.cs
@@ -177,6 +177,13 @@ public static void SetMonitorState(MonitorState state)
             SendMessage(0xFFFF, 0x112, 0xF170, (int)state);
         }
 
+        public static MessageBoxResult ShowMessageBox(IntPtr owner, 
+            string message, 
+            string caption,
+            MessageBoxType messageBoxType)
+        {
+            return (MessageBoxResult)MessageBox(owner, message, caption, (long)messageBoxType);
+        }
         public static bool SwitchToInputDesktop()
         {
             var inputDesktop = OpenInputDesktop();