diff --git a/appveyor.yml b/appveyor.yml
index a6739cfe39..7bdee594ae 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -64,9 +64,6 @@ after_test:
   - cp OpenRA.Game/OpenRA.ico .
   - if not exist nsissetup.exe appveyor DownloadFile "http://downloads.sourceforge.net/project/nsis/NSIS 2/2.46/nsis-2.46-setup.exe" -FileName nsissetup.exe
   - nsissetup /S /D=%NSIS_ROOT%
-  - if not exist NsProcess.zip appveyor DownloadFile "http://nsis.sourceforge.net/mediawiki/images/archive/1/18/20140806212030!NsProcess.zip" -FileName NsProcess.zip
-  - 7z x NsProcess.zip -o%NSIS_ROOT% -y
-  - move /Y %NSIS_ROOT%\Plugin\nsProcess.dll %NSIS_ROOT%\Plugins\nsProcess.dll
   - '%NSIS_ROOT%\makensis /DSRCDIR="%APPVEYOR_BUILD_FOLDER%" /DDEPSDIR="%APPVEYOR_BUILD_FOLDER%\thirdparty\download\windows" /V3 packaging/windows/OpenRA.nsi'
   - move /Y %APPVEYOR_BUILD_FOLDER%\packaging\windows\OpenRA.Setup.exe %APPVEYOR_BUILD_FOLDER%\OpenRA-%APPVEYOR_REPO_TAG_NAME%.exe
 
diff --git a/packaging/windows/OpenRA.nsi b/packaging/windows/OpenRA.nsi
index 01d41cf295..2c5f5d1166 100644
--- a/packaging/windows/OpenRA.nsi
+++ b/packaging/windows/OpenRA.nsi
@@ -18,7 +18,6 @@
 !include "MUI2.nsh"
 !include "FileFunc.nsh"
 !include "WordFunc.nsh"
-!include "nsProcess.nsh"
 
 Name "OpenRA"
 OutFile "OpenRA.Setup.exe"
@@ -236,17 +235,7 @@ FunctionEnd
 !insertmacro Clean "un."
 
 Section "Uninstall"
-	${nsProcess::FindProcess} "OpenRA.Game.exe" $R0
-	IntCmp $R0 0 gameRunning
-	${nsProcess::FindProcess} "OpenRA.exe" $R0
-	IntCmp $R0 0 gameRunning
-	${nsProcess::Unload}
 	Call un.Clean
-	Goto end
-	gameRunning:
-		MessageBox MB_OK|MB_ICONEXCLAMATION "OpenRA is running. Please close it first" /SD IDOK
-		abort
-	end:
 SectionEnd
 
 ;***************************
diff --git a/packaging/windows/buildpackage.sh b/packaging/windows/buildpackage.sh
index 176ef99dd7..f79b52bcd0 100755
--- a/packaging/windows/buildpackage.sh
+++ b/packaging/windows/buildpackage.sh
@@ -8,11 +8,6 @@ OUTPUTDIR="$4"
 if [ -x /usr/bin/makensis ]; then
     pushd "$SRCDIR" >/dev/null
     popd >/dev/null
-    if [[ ! -f /usr/share/nsis/Include/nsProcess.nsh &&  ! -f /usr/share/nsis/Plugin/nsProcess.dll ]]; then
-        echo "Installing NsProcess NSIS plugin in /usr/share/nsis"
-        sudo unzip -qq -o ${SRCDIR}/thirdparty/download/NsProcess.zip 'Include/*' -d /usr/share/nsis
-        sudo unzip -qq -j -o ${SRCDIR}/thirdparty/download/NsProcess.zip 'Plugin/*' -d /usr/share/nsis/Plugins
-    fi
     echo "Building Windows setup.exe"
     makensis -V2 -DSRCDIR="$BUILTDIR" -DDEPSDIR="${SRCDIR}/thirdparty/download/windows" OpenRA.nsi
     if [ $? -eq 0 ]; then