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-rw-r--r--qga/installer/qemu-ga.wxs15
1 files changed, 10 insertions, 5 deletions
diff --git a/qga/installer/qemu-ga.wxs b/qga/installer/qemu-ga.wxs
index 51340f7ecc..df572adb4a 100644
--- a/qga/installer/qemu-ga.wxs
+++ b/qga/installer/qemu-ga.wxs
@@ -31,6 +31,7 @@
       />
     <Media Id="1" Cabinet="qemu_ga.$(var.QEMU_GA_VERSION).cab" EmbedCab="yes" />
     <Property Id="WHSLogo">1</Property>
+    <Property Id="ARPNOMODIFY" Value="yes" Secure="yes" />
     <MajorUpgrade
       DowngradeErrorMessage="Error: A newer version of QEMU guest agent is already installed."
       />
@@ -121,27 +122,31 @@
               <RegistryValue Type="integer" Name="TypesSupported" Value="7" />
               <RegistryValue Type="string" Name="EventMessageFile" Value="[qemu_ga_directory]qemu-ga.exe" />
             </RegistryKey>
+            <RegistryKey Root="HKLM"
+                         Key="System\CurrentControlSet\Services\QEMU Guest Agent VSS Provider">
+              <RegistryValue Type="integer" Name="VssOption" Value="1" />
+            </RegistryKey>
           </Component>
         </Directory>
       </Directory>
     </Directory>
 
-    <Property Id="cmd" Value="cmd.exe"/>
+    <Property Id="rundll" Value="rundll32.exe"/>
     <Property Id="REINSTALLMODE" Value="amus"/>
 
     <?ifdef var.InstallVss?>
     <CustomAction Id="RegisterCom"
-              ExeCommand='/c "[qemu_ga_directory]qemu-ga.exe" -s vss-install'
+              ExeCommand='"[qemu_ga_directory]qga-vss.dll",DLLCOMRegister'
               Execute="deferred"
-              Property="cmd"
+              Property="rundll"
               Impersonate="no"
               Return="check"
               >
     </CustomAction>
     <CustomAction Id="UnRegisterCom"
-              ExeCommand='/c "[qemu_ga_directory]qemu-ga.exe" -s vss-uninstall'
+              ExeCommand='"[qemu_ga_directory]qga-vss.dll",DLLCOMUnregister'
               Execute="deferred"
-              Property="cmd"
+              Property="rundll"
               Impersonate="no"
               Return="check"
               >