diff --git a/windows/xgboost.sln b/windows/xgboost.sln
index 59aa78180..e3ce195d3 100644
--- a/windows/xgboost.sln
+++ b/windows/xgboost.sln
@@ -1,8 +1,12 @@
 
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual Studio 2010
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Express 2013 for Windows Desktop
+VisualStudioVersion = 12.0.30723.0
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "xgboost", "xgboost\xgboost.vcxproj", "{1D6A56A5-5557-4D20-9D50-3DE4C30BE00C}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "xgboost_wrapper", "xgboost_wrapper\xgboost_wrapper.vcxproj", "{2E1AF937-28BB-4832-B916-309C9A0F6C4F}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -19,6 +23,14 @@ Global
 		{1D6A56A5-5557-4D20-9D50-3DE4C30BE00C}.Release|Win32.Build.0 = Release|Win32
 		{1D6A56A5-5557-4D20-9D50-3DE4C30BE00C}.Release|x64.ActiveCfg = Release|x64
 		{1D6A56A5-5557-4D20-9D50-3DE4C30BE00C}.Release|x64.Build.0 = Release|x64
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Debug|Win32.ActiveCfg = Debug|Win32
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Debug|Win32.Build.0 = Debug|Win32
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Debug|x64.ActiveCfg = Debug|x64
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Debug|x64.Build.0 = Debug|x64
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Release|Win32.ActiveCfg = Release|Win32
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Release|Win32.Build.0 = Release|Win32
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Release|x64.ActiveCfg = Release|x64
+		{2E1AF937-28BB-4832-B916-309C9A0F6C4F}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/windows/xgboost/xgboost.vcxproj b/windows/xgboost/xgboost.vcxproj
index 8b88dbf2e..fac91075c 100644
--- a/windows/xgboost/xgboost.vcxproj
+++ b/windows/xgboost/xgboost.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -27,23 +27,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v120</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v120</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v120</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v120</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
diff --git a/windows/xgboost/xgboost_wrapper/xgboost_wrapper.vcxproj b/windows/xgboost/xgboost_wrapper/xgboost_wrapper.vcxproj
new file mode 100644
index 000000000..b167e8d7d
--- /dev/null
+++ b/windows/xgboost/xgboost_wrapper/xgboost_wrapper.vcxproj
@@ -0,0 +1,154 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{2E1AF937-28BB-4832-B916-309C9A0F6C4F}</ProjectGuid>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <Keyword>ManagedCProj</Keyword>
+    <RootNamespace>xgboost_wrapper</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CLRSupport>true</CLRSupport>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CLRSupport>true</CLRSupport>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CLRSupport>true</CLRSupport>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CLRSupport>true</CLRSupport>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies />
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <OpenMPSupport>true</OpenMPSupport>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>
+      </AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PreprocessorDefinitions>WIN32;NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies />
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PreprocessorDefinitions>WIN32;NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <OpenMPSupport>true</OpenMPSupport>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>
+      </AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\src\io\io.h" />
+    <ClInclude Include="..\..\src\io\simple_dmatrix-inl.hpp" />
+    <ClInclude Include="..\..\wrapper\xgboost_wrapper.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\src\io\io.cpp" />
+    <ClCompile Include="..\..\wrapper\xgboost_wrapper.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\..\wrapper\xgboost.py" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/wrapper/xgboost.py b/wrapper/xgboost.py
index 013b84b15..01eccfbea 100644
--- a/wrapper/xgboost.py
+++ b/wrapper/xgboost.py
@@ -9,7 +9,10 @@ import numpy.ctypeslib
 import scipy.sparse as scp
 
 # set this line correctly
-XGBOOST_PATH = os.path.dirname(__file__)+'/libxgboostwrapper.so'
+if os.name == 'nt':
+    XGBOOST_PATH = os.path.dirname(__file__)+'/../windows/x64/Release/xgboost_wrapper.dll'
+else:
+    XGBOOST_PATH = os.path.dirname(__file__)+'/../libxgboostwrapper.so'
 
 # load in xgboost library
 xglib = ctypes.cdll.LoadLibrary(XGBOOST_PATH)
@@ -231,7 +234,7 @@ class Booster:
         trees = self.get_dump(fmap)
         fmap = {}
         for tree in trees:
-            print tree
+            print (tree)
             for l in tree.split('\n'):
                 arr = l.split('[')
                 if len(arr) == 1:
@@ -263,7 +266,7 @@ def train(params, dtrain, num_boost_round = 10, evals = [], obj=None, feval=None
         for i in range(num_boost_round):
             bst.update( dtrain, i )
             if len(evals) != 0:
-                sys.stderr.write(evaluate(bst, evals, i, feval)+'\n')
+                sys.stderr.write(evaluate(bst, evals, i, feval).decode()+'\n')
     else:
         # try customized objective function
         for i in range(num_boost_round):