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  • My host OS: Mac OSX 10.8.2 (just upgraded from 10.8.1)
  • Virtualbox: 4.2.0 rc80737
  • Vagrant: 1.0.4

I just upgraded my OS with the latest OSX upgrade/patch. Now, I'm unable to use my VMs:

Failed to open a session for the virtual machine vag_1347774268.

VT-x is being used by another hypervisor. (VERR_VMX_IN_VMX_ROOT_MODE).

VirtualBox can't operate in VMX root mode. Please close all other virtualization programs. (VERR_VMX_IN_VMX_ROOT_MODE).

Result Code: NS_ERROR_FAILURE (0x80004005) Component: Console Interface: IConsole {db7ab4ca-2a3f-4183-9243-c1208da92392}

I'm not running any other virtualization programs as far as I can tell.

Any ideas on how to remedy the situation?

Domino
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    Good question, wrong site. – Lucas Kauffman Sep 25 '12 at 07:28
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    @LucasKaufman: Couldn't you have pointed Domino at the better site ? – user9517 Sep 25 '12 at 07:48
  • Which site? I apologize, I thought VM issues would be here. – Domino Sep 25 '12 at 13:36
  • Welcome to Server Fault. Please see the FAQ for a detailed explanation of what we do and do not cover here. For your question, you may wish to visit our sister site [Ask Different](http://apple.stackexchange.com/) (and be sure to read their FAQ as well). – Michael Hampton Sep 25 '12 at 14:06
  • @Domino It's a bit of a gray area: If you're asking for yourself ("My Mac, at home") it really belongs on [AskDifferent](http://apple.stackexchange.com) because it's an Apple-Specific problem. If you're asking as part of work ("We upgraded my boss' mac and now VirtualBox doesn't work" or "We upgraded our Mac labs at the university and now the Windows VirtualBox instances won't run") it's on-topic here too, but we don't have many Mac Heads so Ask Different might be a better place to try if your problem is Mac-Specific. – voretaq7 Sep 25 '12 at 22:30
  • (Normally I'd also say it's best to ask the vendor about errors like this, but we're talking about VirtualBox, and getting support out of Oracle will cost you your first born, a kidney, and possibly your car... After which they'll tell you "Idunno!" because your question isn't about their database products :) – voretaq7 Sep 25 '12 at 22:32
  • Are the downvotes because the question was asked in the wrong place? Or because the question is worded badly? I the question is likely to get migrated to another stackexchange site, don't downvote it simply for that reason, because the votes will transfer too. – Jed Daniels Sep 25 '12 at 23:36
  • And if you do downvote, PLEASE explain why, so the original poster can fix it and better the site and community. – Jed Daniels Sep 25 '12 at 23:36

1 Answers1

1

It's a known issue - there's a fix due.

Chopper3
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