Uninstall 32bit Java but leave 64bit Java

The Toolkit General Discussion
1

Hi there

I’d like to only uninstall all 32bit Java 8 installation with the following command and leave 64bit installations of Java alone on Windows 10 computers.

Remove-MSIApplications -Name ‘Java 8 Update’ -FilterApplication (‘Is64BitApplication’, $false, ‘Exact’)

Sadly the command will always uninstall the 32bit AND 64bit Java installations.

Is this a bug and is there a workaround/alternative?

The following command works but I and leaves Java 8 64bit alone. But I’d like it to also uninstall versions before 221:

Remove-MSIApplications -Exact ‘Java 8 Update 221’

The string for the 64bit version is ‘Java 8 Update 221 (64-bit)’

So I’d like to look for ‘Java 8 Update’ followed by any build as long as the string doesn’t contain ‘(64-bit)’

Thanks for any help

2

I use the following code to remove all versions of Java before installing the new 64-bit updates. Note the line continuation characters following each pipe, in the attempt to make the code more readable.

$uninstall32 = Get-ChildItem "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall" | `
	ForEach-Object { Get-ItemProperty $_.PSPath } | `
	Where-Object { $_ -match "Java " } | `
	Select-Object -Property UninstallString
    if ($uninstall32) 
	{
	  $uninstall32 = $uninstall32.UninstallString -Replace "msiexec.exe","" -Replace "/I","" -Replace "/X",""
	  $uninstall32 = $uninstall32.Trim()
	  Write-Log "Uninstalling older 32-bit version(s)..."
	  Start-Process "msiexec.exe" -ArgumentList "/x$uninstall32 /q" -Wait
    }
    $uninstall64 = Get-ChildItem "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" | `
		ForEach-Object { Get-ItemProperty $_.PSPath } | `
		Where-Object { $_ -match "Java " } | `
		Select-Object -Property UninstallString
    if ($uninstall64) 
	{
	  $uninstall64 = $uninstall64.UninstallString -Replace "msiexec.exe","" -Replace "/I","" -Replace "/X",""
	  $uninstall64 = $uninstall64.Trim()
	  Write-Log "Uninstalling older 64-bit version(s)..."
	  Start-Process "msiexec.exe" -ArgumentList "/x$uninstall64 /q" -Wait
    }
3

64-bit Java should have (64-bit) name in Program and Features. To remove all Java 32-bit but leave Java 64-bit I used below command. For example: to remove all Java 8 Update xxx.

Remove-MSIApplications -Name ‘Java 8 Update’ -ExcludeFromUninstall (‘Is64BitApplication’, $true, ‘Exact’),(‘DisplayName’, ‘*(64 bit)’, ‘WildCard’)