diff --git a/src/common/windows/pdb_source_line_writer.cc b/src/common/windows/pdb_source_line_writer.cc
index c0415d0..74a8a70 100644
--- a/src/common/windows/pdb_source_line_writer.cc
+++ b/src/common/windows/pdb_source_line_writer.cc
@@ -79,8 +79,13 @@
 
   CComPtr<IDiaDataSource> data_source;
   if (FAILED(data_source.CoCreateInstance(CLSID_DiaSource))) {
-    fprintf(stderr, "CoCreateInstance CLSID_DiaSource failed "
-            "(msdia80.dll unregistered?)\n");
+    const int kGuidSize = 64;
+    wchar_t classid[kGuidSize] = {0};
+    StringFromGUID2(CLSID_DiaSource, classid, kGuidSize);
+    // vc80 uses bce36434-2c24-499e-bf49-8bd99b0eeb68.
+    // vc90 uses 4C41678E-887B-4365-A09E-925D28DB33C2.
+    fprintf(stderr, "CoCreateInstance CLSID_DiaSource %S failed "
+            "(msdia*.dll unregistered?)\n", classid);
     return false;
   }
 
diff --git a/src/tools/windows/binaries/symupload.exe b/src/tools/windows/binaries/symupload.exe
index c78299e..6aa1f45 100644
--- a/src/tools/windows/binaries/symupload.exe
+++ b/src/tools/windows/binaries/symupload.exe
Binary files differ
diff --git a/src/tools/windows/refresh_binaries.bat b/src/tools/windows/refresh_binaries.bat
index f10ccba..374f89f 100644
--- a/src/tools/windows/refresh_binaries.bat
+++ b/src/tools/windows/refresh_binaries.bat
@@ -11,7 +11,7 @@
 REM the revision number, and builds the tools.  You must run 'svn commit' to
 REM commit the pending edits to the repository.
 
-cd ..\..\
+pushd %~dp0\..\..\
 call svn update --accept postpone
 cd tools\windows
 devenv symupload\symupload.vcproj /rebuild Release
@@ -24,3 +24,4 @@
 call svn info >> %TEMP%\checkin.txt
 echo Done!
 echo type 'svn commit -F %%TEMP%%\checkin.txt' to commit.
+popd
\ No newline at end of file
diff --git a/src/tools/windows/symupload/symupload.vcproj b/src/tools/windows/symupload/symupload.vcproj
index d6d07f1..8177c83 100644
--- a/src/tools/windows/symupload/symupload.vcproj
+++ b/src/tools/windows/symupload/symupload.vcproj
@@ -1,10 +1,12 @@
 ﻿<?xml version="1.0" encoding="UTF-8"?>
 <VisualStudioProject
 	ProjectType="Visual C++"
-	Version="8.00"
+	Version="9.00"
 	Name="symupload"
 	ProjectGUID="{E156ED87-9DE9-47C8-94EC-A5A9CDD65E18}"
+	RootNamespace="symupload"
 	Keyword="Win32Proj"
+	TargetFrameworkVersion="131072"
 	>
 	<Platforms>
 		<Platform
@@ -60,10 +62,12 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="&quot;$(VSInstallDir)\DIA SDK\lib\diaguids.lib&quot; wininet.lib version.lib"
+				AdditionalDependencies="&quot;$(VSInstallDir)\DIA SDK\lib\diaguids.lib&quot; wininet.lib version.lib imagehlp.lib"
 				LinkIncremental="2"
 				GenerateDebugInformation="true"
 				SubSystem="1"
+				RandomizedBaseAddress="1"
+				DataExecutionPrevention="0"
 				TargetMachine="1"
 			/>
 			<Tool
@@ -85,9 +89,6 @@
 				Name="VCAppVerifierTool"
 			/>
 			<Tool
-				Name="VCWebDeploymentTool"
-			/>
-			<Tool
 				Name="VCPostBuildEventTool"
 			/>
 		</Configuration>
@@ -134,12 +135,14 @@
 			/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="&quot;$(VSInstallDir)\DIA SDK\lib\diaguids.lib&quot; wininet.lib version.lib"
+				AdditionalDependencies="&quot;$(VSInstallDir)\DIA SDK\lib\diaguids.lib&quot; wininet.lib version.lib imagehlp.lib"
 				LinkIncremental="2"
 				GenerateDebugInformation="true"
 				SubSystem="1"
 				OptimizeReferences="2"
 				EnableCOMDATFolding="2"
+				RandomizedBaseAddress="1"
+				DataExecutionPrevention="0"
 				TargetMachine="1"
 			/>
 			<Tool
@@ -161,9 +164,6 @@
 				Name="VCAppVerifierTool"
 			/>
 			<Tool
-				Name="VCWebDeploymentTool"
-			/>
-			<Tool
 				Name="VCPostBuildEventTool"
 			/>
 		</Configuration>