If VT-x virtualization technology is locked or disabled on your Mac

If you see an alert message telling you that VT-x support is locked by the firmware on your Intel-based Mac, make sure that you're running the latest software updates.

This article has been archived and is no longer updated by Apple.

When you use third-party products that incude Intel VT-x virtualization technology, an alert message might tell you that VT-x support is locked by the firmware on your Mac.

You might also notice that VT-x support is disabled when you use third-party virtualization applications on your Mac like VMWare Fusion or Parallels Desktop.

You can fix this issue by making sure that your Mac has the latest software updates available:

You should also install any updates available for software not made by Apple. If this doesn't fix the issue, contact the software manufacturer for assistance.

Learn more

Learn more about the Intel Virtualization Technology that's enabled on Intel-based Mac computers.

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