Uninstalling Excel add-in using VBScript <p>I'm trying to create a MSI installer that installs an Add-In (.xla) into Microsoft Excel (2007 in my case). Installing it goes well. I use a 'Custom Action' that runs this VBScript file:</p> <pre><code>Dim SourceDir Dim objExcel Dim objAddin SourceDir = Session.Property("CustomActionData") Set objExcel = CreateObject("Excel.Application") objExcel.Workbooks.Add Set objAddin = objExcel.AddIns.Add(SourceDir &amp; "addin.xla", True) objAddin.Installed = True objExcel.Quit Set objExcel = Nothing </code></pre> <p>I pass the location of the addin to the script using the CustomActionData property. The Add-in is copied to a folder inside 'Program Files', where it will stay until it is uninstalled. This is handled by the installer itself.</p> <p>The problem is when I use the uninstall script:</p> <pre><code>Dim objExcel Dim addin On Error Resume Next Set objExcel = CreateObject("Excel.Application") For i = 0 To objExcel.Addins.Count Set objAddin= objExcel.Addins.item(i) If objAddin.Name = "addin.xla" Then objAddin.Installed = False End If Next objExcel.Quit Set objExcel = Nothing </code></pre> <p>The addin creates a custom toolbar in Excel u[ installation. The toolbar is not removed upon uninstall, and the entry of the add-in in the 'Add-in' section of Excel's settings isn't either.</p> <p>Can anyone tell me if these two things can be done programmatically using VBScript?</p> <p>thanks in advance</p>