I've a lot of softwares on my Mac, so, I've forgot to check some of them before upgrading MacOS to Mountain Lion (from Lion)

Since Mountain Lion, VirtualBox throw this message when I try to open it:

You can't open the application "VirtualBox.app" because it is not supported on the type of Mac

What is the better (not the simpler but really the better) way to update VirtualBox without breaking anything?

Can I install the latest version over the old one?
Or must I uninstall completely the old one and reinstall it form scratch?

Or anything else?

Which are the problems I can expect?

Thanks in advance for your help.

[EDIT] in reply to the comment:

The VirtualBox.app details declare version: 4.1.8

For the Mac, it's a

15 inch, Late 2011

Processor 2.4 GHz Intel Core i7
Memory 8 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6770M 1024 MB
Software OS X 10.8 (12A269)

  • What version of VirtualBox do you currently have? What type of Mac do you have?
    – Gerry
    Aug 7, 2012 at 7:32
  • @Gerry post edited with informations you need, thank you for your help
    – Pascal Qyy
    Aug 7, 2012 at 7:58
  • FWIW, VirtualBox 4.1.18 is the first version that specifically supports Mountain Lion.
    – pmdj
    Aug 7, 2012 at 8:31
  • 1
    @pmjordan compatibility was earlier than 4.1.18. virtualbox.org/ticket/10267 notes that 4.1.16 was made compatible with a seeded build of Mountain Lion (and that Apple permitted that version to run). Aug 10, 2012 at 0:52

1 Answer 1


There should be no problems upgrading to the latest version of VirtualBox. You can just download and run the installer to upgrade, no additional uninstall steps are required.

You can also update automatically from the "VirtualBox" menu, by choosing "Check for Updates...". It should find a newer version, and prompt to download and install.

  • It's impossible to update automatically from VirtualBox as it can't open… But I can install the new version over the old one?
    – Pascal Qyy
    Aug 7, 2012 at 8:42
  • @PascalQyy, you're right, but indeed you can just download the latest version and install it over the old one.
    – Gerry
    Aug 7, 2012 at 8:54
  • 1
    In the past, following an update, a saved VirtualBoxVM was no longer usable. For that reason my habit is to have no VirtualBoxVM in the saved state before any update of VirtualBox. In an edge case I might suggest attention to Exceptions.plist virtualbox.org/ticket/10267#comment:5 but proceed with caution – risk of kernel panic. Aug 10, 2012 at 1:05

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