virtualbox.org

Solved on Bitdefender side I suppose because after some updates the problem was gone.

Seems the problem is already solved

Then Bitdefender is maybe different . All my service requests were answered within a few days so far. When I talked about problems with their software they are very helpful and communicative. So let's see what they say.

ok, with Windows 10 I had to upgrade Bitdefender antivirus to version 2016. After uninstalling that version VirtualBox works normal again. Till Bitdefender version 2015 I had no problem with it. I'll open a ticket for that behavior at Bitdefender.

Here it is.

Any idea what else I can do? I still don't know why it doesn't work anymore after upgrading to Windows 10.

I googled for disabling Hyper-V and Window 10 Home even doesen't have the possibility to install or deactivate Hyper-V. So it must be something else. Since VirtualBox was running before I can only imagine that it has something to do with the Windows 10 upgrade itself. I don't have VMware or other si...

Replace "usually" with "always". You need to disable the Hyper-v service on the host if you want to be able to use VirtualBox. Make sure you do a full power down and reboot after that. Hi, As I wrote in my post no Hyper-V Driver or Service is running and in bcdedit no active hyp...

Hi, I use VirtualBox a while already and it almost worked fine. But now it suddenly tells me, while trying to start any existing machine, the following error: VERR_VMX_IN_VMX_ROOT_MODE E_FAIL (0x80004005) This usually happens if a second hypervisor is installed an active. Windows 10 brings integrate...