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I've installed VirtualBox 4.1.18 on my 64-bit Windows 7 Professional SP1 machine. The guest is running x64 Windows 8 Enterprise.

I've read in numerous places that to get the guest to take up more than a fraction of my screen I need to install Guest Additions via the guest window Devices menu > Install Guest Additions...

When I try to do this, however, nothing happens. No error messages, no dialog box of any kind. Absolutely nothing. I might as well be clicking on the title bar of the window or something.

I can see VBoxGuestAdditions.iso in the VirtualBox installation folder on the host machine. I tried manually mounting it to the CD/DVD drive of the guest but that made no difference. Two posts I came across said explicitly not to mount it, so in the guest window I then selected Devices > CD/DVD Devices > Remove disk from virtual drive. Didn't make any difference either.

Is this a problem with running Windows 8 as a guest or am I doing something wrong?

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How long did you wait? In my experience, it can take a fair amount of time for the ISO to mount. – user3463 Aug 20 '12 at 3:17
After you hit "Install Guest Additions", and before you unmounted the drive, did you check the Guest system to see if it was reading the ISO? Windows 8 may be set by default to not perform AutoPlay/Autorun, so you might have to manually run the setup after the ISO is mounted. – Iszi Aug 20 '12 at 3:18
Windows 8 is not an officially supported client under VirtualBox right now. Initial support is slated for version 4.2, which is currently at Beta 1. – Goyuix Aug 20 '12 at 3:27
I found a SysProbs article that explained I had to go into the guest OS and run Guest Additions from there. I did so, it didn't auto run but it was pretty obvious which executable the auto-run would have executed so I ran that. It did something but I didn't see a normal installer. The VM went black. Now when I start the guest the guest window appears but the VM is completely black. No indication Windows 8 is running at all. I think I'll restore the VM from backup and wait for VB 4.2. – SimonTewsi Aug 20 '12 at 3:44
  1. DevicesCD/DVD DevicesRemove disk from virtual drive
  2. Check your connectivity if you can reach out
  3. Devices menuInstall Guest Additions
share|improve this answer
This works. Thank you :) – chhantyal Oct 16 '15 at 12:14

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protected by Community Jun 17 '13 at 16:53

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