virtualbox.org

Hi,

Since I upgrade my laptop Windows 8 Pro to Windows 8.1 Pro, I can't start any virtual machine (all guests are 32 bits).

It always end with : "Failed to load VMMR0.r0 (VERR_SVM_DISABLED)".

The same setup works fine on a Windows 7 ou 8.

No solutions ???????

Assuming you don't have something else running which uses hardware VM acceleration (i.e. Hyper-v), then the solution for the moment would be to revert to VirtualBox 4.2.18.

Hyper-V is not installed