Vagrant Up Error In Headless Ubuntu: The guest machine entered an invalid state while waiting for it to boot

Question

I need to install vagrant in headless ubuntu(Ubuntu 12.04.2 LTS- 64 Bit).Vagrant ver-v1.3.0 and Virtual box- 4.2.18. After adding the vagrant package box, when I am giving \"vag

Answer 1

For me this started to happen just after upgrading Avast Free Antivirus to v11.1.2253.

Although I'm having the VT-X option enabled, when started a box using VirtualBox Manager I've been receiving errors that it is not (VERR_VMX_MSR_LOCKED_OR_DISABLED).

Another issue was that the VirtualBox Manager showed up Operating system Ubuntu (32-bit), when the box is 64-bit.

Solution is to disable 'Enable hardware-assisted virtualization' in Avast Antivirus, at least until Avast team solves it.

Source: Avast forums > Avast Free 11.1.2253 & VirtualBox 5.0.14

For future reference: VirtualBox may conflict with other programs using virtualization: The usual culprits are system level debuggers, other VM platforms, and some resident anti-virus applications as described on [VirtualBox forum](https://forums.virtualbox.org/viewtopic.php?f=1&t=62339.