Programmatically launch an MSI under a different user account

I need a way of launching an MSI using an admin account through a VBscript.  Any help would be greatly appreciated.
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Have you tried using "c:/somepath/SomeFile.MSI"

?  That would be a good place to start.

-- Dan
tkelly45Author Commented:
Running the script install isn't a problem it is running it under different security credentials that is the problem.   I need to run the install under an admin account but not all of our users have admin access to their desktop.

I have tried using the code below to logon as a different user.  I can successfully login as a different user under an admin account but it doesn't seem to work for a non-admin account.  blnResult returns false after LogonUser() with a non-admin account.

Option Explicit
Private Declare Function LogonUser Lib "advapi32.dll" _
Alias "LogonUserA" (ByVal lpszUsername As String, _
ByVal lpszDomain As String, ByVal lpszPassword As String, _
ByVal dwLogonType As Long, ByVal dwLogonProvider As Long, _
phToken As Long) As Long

Private Declare Function ImpersonateLoggedOnUser Lib "advapi32.dll" (ByVal hToken As Long) As Long
Private Declare Function RevertToSelf Lib "advapi32.dll" () As Long

Public Sub Logon(ByVal strAdminUser As String, ByVal _
                    strAdminPassword As String, ByVal strAdminDomain As String)
Dim lngTokenHandle As Long
Dim lngLogonType As Long
Dim lngLogonProvider As Long
Dim blnResult As Boolean


blnResult = RevertToSelf()

blnResult = LogonUser(strAdminUser, strAdminDomain, strAdminPassword, _
                                     lngLogonType, lngLogonProvider, _
blnResult = ImpersonateLoggedOnUser(lngTokenHandle)
End Sub

Public Sub Logoff()
Dim blnResult As Boolean

blnResult = RevertToSelf()
End Sub

Did you get that code from here:

If so, then you will need to read down a little further.  The user who calls these functions must be enabled for the Permission setting of

     "Act as part of the operating system"

Admins have that, as do System Services which start as the LocalSystem login.

If you think about it, I'm sure that you will agree that it is a good idea to limit this sort of thing.  An MSI (or any other executable) could do nasty damage to a computer.  This safeguard is in place to prevent just any program started by any user from wiping out your system.  Thank goodness!

-- Dan

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