Question

VB Script to capture Uninstall String and use that to execute an un-install

Asked by: birddog2008

Hello

I have a VB script that will capture the GUID and execute msiexec to uninstall a software...but I want to capture the UninstallString in the registry which is the path to uninstall the file, and use that variable in the msiexec to uninstall.  I've attached the code...

Thanks!

'**********************************************************************
const AppName = "particular app I want to uninstall"
'**********************************************************************
 
const HKEY_LOCAL_MACHINE = &H80000002
 
Set WshShell = WScript.CreateObject("WScript.Shell")
 
'First, find the GUID 
strComputer = "."
Set objReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\"&_ 
    strComputer & "\root\default:StdRegProv")
strKeyPath = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"
objReg.EnumKey HKEY_LOCAL_MACHINE, strKeyPath, arrSubKeys
 
For Each subkey In arrSubKeys
    InstalledAppName = ""
    InstalledAppName = WshShell.RegRead("HKLM\" & strKeyPath & "\" & subkey & "\DisplayName")
 
    If InStr(InstalledAppName, AppName) > 0 then
	RawGUID = ""
	GUID = ""
        RawGUID = WshShell.RegRead("HKLM\" & strKeyPath & "\" & subkey & "\UninstallString")
        GUID = Mid(RawGUID, instr(RawGUID, "{"), 38)
	If GUID<>"" then
	    ' Found matching GUID, removing...
	    	    WshShell.Run "msiexec /x " & GUID & " /q"
	    Exit For
	End If
    else
	WshShell.Popup "TESTING - Uninstall failed. Couldn'T find APP" & Return
 Wscript.Quit()
 	
    End If

                                  
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Asked On
2009-10-27 at 14:20:59ID24848911
Tags

microsoft xp vbscript

Topics

Automation

,

Windows XP Operating System

,

VB Script

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: gecko_au2003Posted on 2009-10-28 at 05:33:39ID: 25682477

Not sure if the below PAQ is much use ?

http://www.experts-exchange.com/Programming/Languages/Visual_Basic/VB_Script/Q_23036532.html

In what context are you going to use this vbscript ie similiar to a hta file where it shows you what apps are installed and then select an app you want to remove and click a remove button and that to launch the msiexec command to remove that app using that apps un install string or what exactly ?

 

by: birddog2008Posted on 2009-10-28 at 10:55:44ID: 25686191

Very similiar but not exactly...see I have the script able to pick up the guid, then I msiexec uninstall the product via the guid.

But there are certain applications that don't have a guid in the UninstallString of the registry, but a full path to the executible to uninstall the software.  So, I'm looking for the correct syntax to pick up that entire uninstall path so I can drop that into my exectue that will have the msiexec /x /q (variable name=c:\program\.....)

Thanks!

 

by: RobSampsonPosted on 2009-10-28 at 20:06:38ID: 25690356

Hi there,

If you know the GUID, then you know the full registry path to the product, so you can use this to pull the entire UninstallString value:

Set objShell = CreateObject("WScript.Shell")
strUninstallString = objShell.RegRead("HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\<GUID>\UninstallString")


Regards,

Rob.

20120131-EE-VQP-002

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