I have scripted WMIMSI.bat to allow you to install a .MSI from a WMI script.

The syntax for using WMIMSI.bat is:

WMIMSI ALL PackagePath \[PackageParms\]

Where:

ALL          is Y if you wish the package to be available to all users,
             or N if you wish the package to be available only to the user who runs the WMIMSI.bat script.

PackagePath  is the path to the package. URL format is allowed.

PackageParms are installation parameters that the package accepts.

WMIMSI.bat contains:

@echo off
if \{%2\}
\{\} @echo Syntax: WMIMSI ALL PackagePath \[Package Installation Parameters\]&goto :EOF
if not exist %2 @echo Syntax: WMIMSI ALL PackagePath \[Package Installation Parameters\] - %2 NOT found.&goto :EOF
if /i \{%1\}
\{Y\} goto OK
if /i \{%1\}
\{N\} goto OK
@echo Syntax: WMIMSI ALL PackagePath \[Package Installation Parameters\] - %1 NOT Y or N.&goto :EOF
:OK
setlocal
set pkg=%2
set pkg="%pkg:"=%"
set wrk="%TEMP%\WMIMSI_%RANDOM%.VBS%"
if /i \{%1\}
\{Y\} (
 @echo Const ALL_USERS = True>%wrk%
 ) ELSE (
 @echo Const ALL_USERS = False>%wrk%
)
@echo Set objService = GetObject("winmgmts:")>>%wrk%
@echo Set objSoftware = objService.Get("Win32_Product")>>%wrk%
for /f "Tokens=1,2*" %%a in ('@echo %*') do (
 @echo errReturn = objSoftware.Install(%pkg%, %%c, ALL_USERS)>>%wrk%
)
::cscript //nologo %wrk%
type %wrk%
del /q %wrk%
endlocal