Recently I started having an issue with VT-x on my Windows 10 running on HP EliteBook. I was using Oracle VirtualBox to run some VMs on it before and VT-x was enabled in BIOS and was working fine.
I started getting
VT-x is not availableerror every time I was trying to start any of my VMs. That started happening after I installed Docker on my machine, so I tried uninstalling it and rebooting. Didn’t help.I checked BIOS settings and it says VT-x is enabled but checking with Intel(R) Processor Identification Utility shows that VT-x is not supported and Oracle VirtualBox also doesn’t see it.
There were no hardware changes and the only software change was installing/uninstalling Docker.
How can this issue be fixed?
Solution:
There are three common culprits for the type of error the user is seeing:
- VT-x is not enabled in the BIOS
- The CPU doesn’t support VT-x
- Hyper-V virtualization is enabled in Windows
Since the user already eliminated the first two possible culprits, the next step is to open a command prompt as administrator and run the following command:
dism.exe /Online /Disable-Feature:Microsoft-Hyper-VAfterwards, reboot the PC and try VirtualBox again.