Error message after updating

[TDS]

I run VirtualBox on my Windows 10 for an old program that runs on Windows XP. After updating I get the following error message:
Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILABLE).
VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED).


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

[scottgus1]

Either your computer's "virtualization technology" (VT-x / AMD-V / SVM) is not on in the BIOS or Hyper-V is active.

I have a 64bit host, but can't install 64bit guests