diff --git a/Doc/make.bat b/Doc/make.bat
index fd54cb8..6aae34a 100644
--- a/Doc/make.bat
+++ b/Doc/make.bat
@@ -8,13 +8,17 @@
 if "%SPHINXBUILD%" EQU "" set SPHINXBUILD=sphinx-build
 if "%PYTHON%" EQU "" set PYTHON=py
 
-if "%HTMLHELP%" EQU "" (
-    where hhc 2>nul >"%TEMP%\hhc.loc"
-    if errorlevel 1 dir "..\externals\hhc.exe" /s/b > "%TEMP%\hhc.loc"
-    if errorlevel 1 echo Cannot find HHC on PATH or in externals & exit /B 1
-    set /P HTMLHELP= < "%TEMP%\hhc.loc"
-    del "%TEMP%\hhc.loc"
-)
+if "%1" NEQ "htmlhelp" goto :skiphhcsearch
+if exist "%HTMLHELP%" goto :skiphhcsearch
+
+rem Search for HHC in likely places
+set HTMLHELP=
+where hhc /q && set HTMLHELP=hhc && goto :skiphhcsearch
+where /R ..\externals hhc > "%TEMP%\hhc.loc" 2> nul && set /P HTMLHELP= < "%TEMP%\hhc.loc" & del "%TEMP%\hhc.loc"
+if not exist "%HTMLHELP%" where /R "%ProgramFiles(x86)%" hhc > "%TEMP%\hhc.loc" 2> nul && set /P HTMLHELP= < "%TEMP%\hhc.loc" & del "%TEMP%\hhc.loc"
+if not exist "%HTMLHELP%" where /R "%ProgramFiles%" hhc > "%TEMP%\hhc.loc" 2> nul && set /P HTMLHELP= < "%TEMP%\hhc.loc" & del "%TEMP%\hhc.loc"
+if not exist "%HTMLHELP%" echo Cannot find HHC on PATH or in externals & exit /B 1
+:skiphhcsearch
 
 if "%DISTVERSION%" EQU "" for /f "usebackq" %%v in (`%PYTHON% tools/extensions/patchlevel.py`) do set DISTVERSION=%%v
 
diff --git a/Tools/msi/buildrelease.bat b/Tools/msi/buildrelease.bat
index 7183a84..3f2a94a 100644
--- a/Tools/msi/buildrelease.bat
+++ b/Tools/msi/buildrelease.bat
@@ -26,15 +26,21 @@
 
 
 :CheckOpts
+if "%1" EQU "-h" goto Help
 if "%1" EQU "-c" (set CERTNAME=%~2) && shift && shift && goto CheckOpts
+if "%1" EQU "--certificate" (set CERTNAME=%~2) && shift && shift && goto CheckOpts
 if "%1" EQU "-o" (set OUTDIR=%~2) && shift && shift && goto CheckOpts
+if "%1" EQU "--out" (set OUTDIR=%~2) && shift && shift && goto CheckOpts
 if "%1" EQU "-D" (set SKIPDOC=1) && shift && goto CheckOpts
+if "%1" EQU "--skip-doc" (set SKIPDOC=1) && shift && goto CheckOpts
 if "%1" EQU "-B" (set SKIPBUILD=1) && shift && goto CheckOpts
+if "%1" EQU "--skip-build" (set SKIPBUILD=1) && shift && goto CheckOpts
 if "%1" EQU "--download" (set DOWNLOAD_URL=%~2) && shift && shift && goto CheckOpts
 if "%1" EQU "--test" (set TESTTARGETDIR=%~2) && shift && shift && goto CheckOpts
 if "%1" EQU "-b" (set TARGET=Build) && shift && goto CheckOpts
-if '%1' EQU '-x86' (set BUILDX86=1) && shift && goto CheckOpts
-if '%1' EQU '-x64' (set BUILDX64=1) && shift && goto CheckOpts
+if "%1" EQU "--build" (set TARGET=Build) && shift && goto CheckOpts
+if "%1" EQU "-x86" (set BUILDX86=1) && shift && goto CheckOpts
+if "%1" EQU "-x64" (set BUILDX64=1) && shift && goto CheckOpts
 
 if not defined BUILDX86 if not defined BUILDX64 (set BUILDX86=1) && (set BUILDX64=1)
 
@@ -42,21 +48,21 @@
 if "%SKIPBUILD%" EQU "1" goto skipdoc
 if "%SKIPDOC%" EQU "1" goto skipdoc
 
+if not defined PYTHON where py -q || echo Cannot find py on path and PYTHON is not set. && exit /B 1
+if not defined SPHINXBUILD where sphinx-build -q || echo Cannot find sphinx-build on path and SPHINXBUILD is not set. && exit /B 1
 call "%D%..\..\doc\make.bat" htmlhelp
 if errorlevel 1 goto :eof
 :skipdoc
 
-where hg >nul 2>nul
-if errorlevel 1 echo Cannot find hg on PATH & exit /B 1
+where hg /q || echo Cannot find Mercurial on PATH && exit /B 1
 
-where dlltool 2>nul >"%TEMP%\dlltool.loc"
-if errorlevel 1 dir "%D%..\..\externals\dlltool.exe" /s/b > "%TEMP%\dlltool.loc"
-if errorlevel 1 echo Cannot find binutils on PATH or in externals & exit /B 1
-set /P DLLTOOL= < "%TEMP%\dlltool.loc"
-set PATH=%PATH%;%DLLTOOL:~,-12%
-set DLLTOOL=
-del "%TEMP%\dlltool.loc"
-
+where dlltool /q && goto skipdlltoolsearch
+set _DLLTOOL_PATH=
+where /R "%D%..\..\externals" dlltool > "%TEMP%\dlltool.loc" 2> nul && set /P _DLLTOOL_PATH= < "%TEMP%\dlltool.loc" & del "%TEMP%\dlltool.loc" 
+if not exist "%_DLLTOOL_PATH%" echo Cannot find binutils on PATH or in external && exit /B 1
+for %%f in (%_DLLTOOL_PATH%) do set PATH=%PATH%;%%~dpf
+set _DLLTOOL_PATH=
+:skipdlltoolsearch
 
 if defined BUILDX86 (
     call :build x86
@@ -94,14 +100,12 @@
     set RELEASE_URI=%RELEASE_URI_X64%
 )
 
-echo on
 if exist "%BUILD%en-us" (
     echo Deleting %BUILD%en-us
     rmdir /q/s "%BUILD%en-us"
     if errorlevel 1 exit /B
 )
 
-echo on
 if exist "%D%obj\Release_%OBJDIR_PLAT%" (
     echo Deleting "%D%obj\Release_%OBJDIR_PLAT%"
     rmdir /q/s "%D%obj\Release_%OBJDIR_PLAT%"
@@ -138,3 +142,22 @@
     copy /Y "%BUILD%en-us\*.msi" "%OUTDIR%\%OUTDIR_PLAT%"
 )
 
+exit /B 0
+
+:Help
+echo buildrelease.bat [--out DIR] [-x86] [-x64] [--certificate CERTNAME] [--build] [--skip-build]
+echo                  [--skip-doc] [--download DOWNLOAD URL] [--test TARGETDIR] [-h]
+echo.
+echo    --out (-o)          Specify an additional output directory for installers
+echo    -x86                Build x86 installers
+echo    -x64                Build x64 installers
+echo    --build (-b)        Incrementally build Python rather than rebuilding
+echo    --skip-build (-B)   Do not build Python (just do the installers)
+echo    --skip-doc (-D)     Do not build documentation
+echo    --download          Specify the full download URL for MSIs (should include {2})
+echo    --test              Specify the test directory to run the installer tests
+echo    -h                  Display this help information
+echo.
+echo If no architecture is specified, all architectures will be built.
+echo If --test is not specified, the installer tests are not run.
+echo.
\ No newline at end of file
diff --git a/Tools/msi/bundle/bundle.targets b/Tools/msi/bundle/bundle.targets
index 8e4eb9e..7697af7 100644
--- a/Tools/msi/bundle/bundle.targets
+++ b/Tools/msi/bundle/bundle.targets
@@ -14,8 +14,8 @@
         <OutputPath>$(OutputPath)en-us\</OutputPath>
         <OutDir>$(OutputPath)</OutDir>
         
-        <DownloadUrl Condition="'$(DownloadUrl)' == '' and '$(DownloadUrlBase)' != ''">$(DownloadUrlBase.TrimEnd(`/`))/$(MajorVersionNumber).$(MinorVersionNumber).$(MicroVersionNumber)/$(ArchName)$(ReleaseLevelName)/{2}</DownloadUrl>
-        <DefineConstants Condition="'$(DownloadUrl)' != ''">$(DefineConstants);DownloadUrl=$(DownloadUrl)</DefineConstants>
+        <DownloadUrl Condition="'$(DownloadUrl)' == '' and '$(DownloadUrlBase)' != ''">$(DownloadUrlBase.TrimEnd(`/`))/$(MajorVersionNumber).$(MinorVersionNumber).$(MicroVersionNumber)/$(ArchName)$(ReleaseLevelName)/</DownloadUrl>
+        <DefineConstants Condition="'$(DownloadUrl)' != ''">$(DefineConstants);DownloadUrl=$(DownloadUrl){2}</DefineConstants>
         <DefineConstants Condition="'$(DownloadUrl)' == ''">$(DefineConstants);DownloadUrl={2}</DefineConstants>
     </PropertyGroup>
     
diff --git a/Tools/msi/msi.props b/Tools/msi/msi.props
index 5c02fd4..16839cc 100644
--- a/Tools/msi/msi.props
+++ b/Tools/msi/msi.props
@@ -69,7 +69,6 @@
             MajorVersionNumber=$(MajorVersionNumber);
             MinorVersionNumber=$(MinorVersionNumber);
             UpgradeMinimumVersion=$(MajorVersionNumber).$(MinorVersionNumber).0.0;
-            UpgradeMaximumVersion=$(MajorVersionNumber).$(MinorVersionNumber).150.0;
             NextMajorVersionNumber=$(MajorVersionNumber).$([msbuild]::Add($(MinorVersionNumber), 1)).0.0;
             PyDebugExt=$(PyDebugExt);
         </DefineConstants>
diff --git a/Tools/msi/testrelease.bat b/Tools/msi/testrelease.bat
index bf1ceff..5c9e015 100644
--- a/Tools/msi/testrelease.bat
+++ b/Tools/msi/testrelease.bat
@@ -11,11 +11,15 @@
 set TESTPERUSER=
 
 :CheckOpts
-if '%1' EQU '-x86' (set TESTX86=1) && shift && goto CheckOpts
-if '%1' EQU '-x64' (set TESTX64=1) && shift && goto CheckOpts
-if '%1' EQU '-t' (set TARGETDIR=%~2) && shift && shift && goto CheckOpts
-if '%1' EQU '-a' (set TESTALLUSER=1) && shift && goto CheckOpts
-if '%1' EQU '-p' (set TESTPERUSER=1) && shift && goto CheckOpts
+if "%1" EQU "-h" goto Help
+if "%1" EQU "-x86" (set TESTX86=1) && shift && goto CheckOpts
+if "%1" EQU "-x64" (set TESTX64=1) && shift && goto CheckOpts
+if "%1" EQU "-t" (set TARGETDIR=%~2) && shift && shift && goto CheckOpts
+if "%1" EQU "--target" (set TARGETDIR=%~2) && shift && shift && goto CheckOpts
+if "%1" EQU "-a" (set TESTALLUSER=1) && shift && goto CheckOpts
+if "%1" EQU "--alluser" (set TESTALLUSER=1) && shift && goto CheckOpts
+if "%1" EQU "-p" (set TESTPERUSER=1) && shift && goto CheckOpts
+if "%1" EQU "--peruser" (set TESTPERUSER=1) && shift && goto CheckOpts
 
 if not defined TESTX86 if not defined TESTX64 (set TESTX86=1) && (set TESTX64=1)
 if not defined TESTALLUSER if not defined TESTPERUSER (set TESTALLUSER=1) && (set TESTPERUSER=1)
@@ -23,16 +27,18 @@
 
 if defined TESTX86 (
     for %%f in ("%PCBUILD%win32\en-us\*.exe") do (
-        if defined TESTALLUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-alluser" InstallAllUsers=1
-        if defined TESTPERUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-peruser" InstallAllUsers=0
+        if defined TESTALLUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-alluser" "InstallAllUsers=1 CompileAll=1"
+        if errorlevel 1 exit /B
+        if defined TESTPERUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-peruser" "InstallAllUsers=0 CompileAll=0"
         if errorlevel 1 exit /B
     )
 )
 
 if defined TESTX64 (
     for %%f in ("%PCBUILD%amd64\en-us\*.exe") do (
-        if defined TESTALLUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-alluser" InstallAllUsers=1
-        if defined TESTPERUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-peruser" InstallAllUsers=0
+        if defined TESTALLUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-alluser" "InstallAllUsers=1 CompileAll=1"
+        if errorlevel 1 exit /B
+        if defined TESTPERUSER call :test "%%~ff" "%TARGETDIR%\%%~nf-peruser" "InstallAllUsers=0 CompileAll=0"
         if errorlevel 1 exit /B
     )
 )
@@ -47,7 +53,7 @@
 
 @set EXITCODE=0
 @echo Installing %1 into %2
-"%~1" /passive /log "%~2\install\log.txt" %~3 TargetDir="%~2\Python" Include_debug=1 Include_symbols=1 CompileAll=1
+"%~1" /passive /log "%~2\install\log.txt" TargetDir="%~2\Python" Include_debug=1 Include_symbols=1 %~3
 
 @if not errorlevel 1 (
     @echo Printing version
@@ -57,7 +63,7 @@
     @echo Installing package
     "%~2\Python\python.exe" -m pip install azure > "%~2\pip.txt" 2>&1
     @if not errorlevel 1 (
-        "%~2\Python\python.exe" -m pip uninstall -y azure python-dateutil six > "%~2\pip.txt" 2>&1
+        "%~2\Python\python.exe" -m pip uninstall -y azure python-dateutil six >> "%~2\pip.txt" 2>&1
     )
 )
 @if not errorlevel 1 (
@@ -78,3 +84,17 @@
 
 @echo off
 exit /B %EXITCODE%
+
+:Help
+echo testrelease.bat [--target TARGET] [-x86] [-x64] [--alluser] [--peruser] [-h]
+echo.
+echo    --target (-t)   Specify the target directory for installs and logs
+echo    -x86            Run tests for x86 installers
+echo    -x64            Run tests for x64 installers
+echo    --alluser (-a)  Run tests for all-user installs (requires Administrator)
+echo    --peruser (-p)  Run tests for per-user installs
+echo    -h              Display this help information
+echo.
+echo If no test architecture is specified, all architectures will be tested.
+echo If no install type is selected, all install types will be tested.
+echo.