diff --git a/Source/Core/Updater/UI.cpp b/Source/Core/Updater/UI.cpp
@@ -0,0 +1,146 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "Updater/UI.h"
+
+#include <CommCtrl.h>
+
+#include <string>
+
+#include "Common/Flag.h"
+#include "Common/StringUtil.h"
+
+namespace
+{
+HWND window_handle = nullptr;
+HWND label_handle = nullptr;
+HWND progressbar_handle = nullptr;
+
+Common::Flag running;
+Common::Flag request_stop;
+};  // namespace
+
+constexpr int PROGRESSBAR_FLAGS = WS_VISIBLE | WS_CHILD | PBS_SMOOTH | PBS_SMOOTHREVERSE;
+
+namespace UI
+{
+bool Init()
+{
+  InitCommonControls();
+
+  WNDCLASS wndcl = {};
+  wndcl.lpfnWndProc = DefWindowProcW;
+  wndcl.hbrBackground = GetSysColorBrush(COLOR_MENU);
+  wndcl.lpszClassName = L"UPDATER";
+
+  if (!RegisterClass(&wndcl))
+    return false;
+
+  window_handle =
+      CreateWindow(L"UPDATER", L"Dolphin Updater", WS_VISIBLE | WS_CLIPCHILDREN, CW_USEDEFAULT,
+                   CW_USEDEFAULT, 500, 100, nullptr, nullptr, GetModuleHandle(nullptr), 0);
+
+  if (!window_handle)
+    return false;
+
+  label_handle = CreateWindow(L"STATIC", NULL, WS_VISIBLE | WS_CHILD, 5, 5, 500, 25, window_handle,
+                              nullptr, nullptr, 0);
+
+  if (!label_handle)
+    return false;
+
+  // Get the default system font
+  NONCLIENTMETRICS metrics = {};
+  metrics.cbSize = sizeof(NONCLIENTMETRICS);
+
+  if (!SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(metrics), &metrics, 0))
+    return false;
+
+  SendMessage(label_handle, WM_SETFONT,
+              reinterpret_cast<WPARAM>(CreateFontIndirect(&metrics.lfMessageFont)), 0);
+
+  progressbar_handle = CreateWindow(PROGRESS_CLASS, NULL, PROGRESSBAR_FLAGS, 5, 25, 470, 25,
+                                    window_handle, nullptr, nullptr, 0);
+
+  if (!progressbar_handle)
+    return false;
+
+  return true;
+}
+
+void Destroy()
+{
+  DestroyWindow(window_handle);
+  DestroyWindow(label_handle);
+  DestroyWindow(progressbar_handle);
+}
+
+void SetMarquee(bool marquee)
+{
+  SetWindowLong(progressbar_handle, GWL_STYLE, PROGRESSBAR_FLAGS | (marquee ? PBS_MARQUEE : 0));
+  SendMessage(progressbar_handle, PBM_SETMARQUEE, marquee, 0);
+}
+
+void ResetProgress()
+{
+  SendMessage(progressbar_handle, PBM_SETPOS, 0, 0);
+  SetMarquee(true);
+}
+
+void SetProgress(int current, int total)
+{
+  SendMessage(progressbar_handle, PBM_SETRANGE32, 0, total);
+  SendMessage(progressbar_handle, PBM_SETPOS, current, 0);
+}
+
+void IncrementProgress(int amount)
+{
+  SendMessage(progressbar_handle, PBM_DELTAPOS, amount, 0);
+}
+
+void SetDescription(const std::string& text)
+{
+  SetWindowText(label_handle, UTF8ToUTF16(text).c_str());
+}
+
+void MessageLoop()
+{
+  request_stop.Clear();
+  running.Set();
+
+  if (!Init())
+  {
+    running.Clear();
+    MessageBox(nullptr, L"Window init failed!", L"", MB_ICONERROR);
+  }
+
+  SetMarquee(true);
+
+  while (!request_stop.IsSet())
+  {
+    MSG msg;
+    while (PeekMessage(&msg, window_handle, 0, 0, PM_REMOVE))
+    {
+      TranslateMessage(&msg);
+      DispatchMessage(&msg);
+    }
+  }
+
+  running.Clear();
+
+  Destroy();
+}
+
+void Stop()
+{
+  if (!running.IsSet())
+    return;
+
+  request_stop.Set();
+
+  while (running.IsSet())
+  {
+  }
+}
+};  // namespace UI
diff --git a/Source/Core/Updater/UI.h b/Source/Core/Updater/UI.h
@@ -0,0 +1,19 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <Windows.h>
+
+namespace UI
+{
+void MessageLoop();
+void Stop();
+
+void SetDescription(const std::string& text);
+void SetMarquee(bool marquee);
+void ResetProgress();
+void SetProgress(int current, int total);
+void IncrementProgress(int amount);
+}  // namespace UI
diff --git a/Source/Core/Updater/Updater.exe.manifest b/Source/Core/Updater/Updater.exe.manifest
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+<assemblyIdentity
+    version="1.0.0.0"
+    processorArchitecture="amd64"
+    name="DolphinTeam.DolphinEmuUpdater"
+    type="win32"
+/>
+<description>Dolphin updater</description>
+<dependency>
+    <dependentAssembly>
+        <assemblyIdentity
+            type="win32"
+            name="Microsoft.Windows.Common-Controls"
+            version="6.0.0.0"
+            processorArchitecture="*"
+            publicKeyToken="6595b64144ccf1df"
+            language="*"
+        />
+    </dependentAssembly>
+</dependency>
+</assembly>
diff --git a/Source/Core/Updater/Updater.vcxproj b/Source/Core/Updater/Updater.vcxproj
@@ -38,7 +38,7 @@
   <PropertyGroup />
   <ItemDefinitionGroup>
     <Link>
-      <AdditionalDependencies>iphlpapi.lib;winmm.lib;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>iphlpapi.lib;winmm.lib;ws2_32.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
@@ -63,6 +63,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Main.cpp" />
+    <ClCompile Include="UI.cpp" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
@@ -71,6 +72,12 @@
   <ItemGroup>
     <SourceFiles Include="$(TargetPath)" />
   </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="UI.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Manifest Include="Updater.exe.manifest" />
+  </ItemGroup>
   <Target Name="AfterBuild" Inputs="@(SourceFiles)" Outputs="@(SourceFiles -> '$(BinaryOutputDir)%(Filename)%(Extension)')">
     <Message Text="Copy: @(SourceFiles) -&gt; $(BinaryOutputDir)" Importance="High" />
     <Copy SourceFiles="@(SourceFiles)" DestinationFolder="$(BinaryOutputDir)" />

diff --git a/Source/Core/Updater/Updater.vcxproj.filters b/Source/Core/Updater/Updater.vcxproj.filters
@@ -2,5 +2,12 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <ClCompile Include="Main.cpp" />
+    <ClCompile Include="UI.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="UI.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Manifest Include="Updater.exe.manifest" />
   </ItemGroup>
 </Project>