Edit Machine Settings - Error in UI

[Gereral.2018]

PROBLEM:

I've imported some VBoxes from an older PC. It had a saved state at the time and I cleared it. I still can not start because of the system acceleration message. Clearing the SYSTEM->ACCELERATION->Hardware Virtualization check box does not clear the message and I can not click "OK" at the bottom to save the change.

MESSGE:

System: Acceleration page: The hardware virtualization is enabled in the Acceleration section of the System page although it is not supported by the host system. It should be disabled in order to start the virtual system.

[Gereral.2018]

error in UI settings page - can not clear msg

[Klaus Espenlaub]

Can you create a dummy VM (doesn't even need any disk creation - if you decide to let it create one, just leave it empty). Please start this VM and provide the associated VBox.log content. It will clarify which CPU functionality and OS configuration you have, and saves asking lots of questions you wouldn't necessarily know how to answer.

This smells like your new install (Windows 10?) has the Hyper-V hypervisor enabled, and then VirtualBox cannot use VT-x. To tell what's going on we need to know the situation better.

I do agree that there are at least usability bugs, if not more. The handling of the situation in the GUI isn't user friendly. It's normal that one cannot change the settings of a VM which has saved state (irrelevant whether separately or as part of a snapshot taken while the VM is running), so it shouldn't try to "help".

Depending on the VM settings (if they really were created on your old PC with hardware virtualization disabled) you might have to go back to VirtualBox 6.0.x or 'lose' the saved state, because VirtualBox 6.1.0 and later cannot do software virtualization any more. I've updated the Downloads page to provide this information explicitly. But before dropping saved state, please provide the information as otherwise you might lose data unnecessarily.

[RAR]

I get this same thing. But, I created a virtual machine from an "appliance" that I created on another machine. There is no saved state. I had VB 6.1 and just upgraded to 6.1.4. I tried to create a dummy VM and select the same OS setting (Windows 7 x64), but I noticed that I only have 32 bit options for OS. So, this HP laptop is apparently not compatible with VirtualBox anymore? Yes, Windows 10 1809. I suspect that I can go into the BIOS setup and select hardware virtualization which is just disabled at the moment. I created a Windows 7 32bit VM and tried to start it. Got: Failed to open a session for the virtual machine dummy.

Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILABLE).

AMD-V is disabled in the BIOS (or by the host OS) (VERR_SVM_DISABLED).

Result Code: E_FAIL (0x80004005) Component: ConsoleWrap Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}