Please have in mind if 6.1.30 is installed all 64 bit guests runs OK, if 6.1.34 is installed (without host reboot after an upgrade form 6.1.30) all 64 bit guests runs OK, the error only appears after host reboot with 6.1.34Īlso there is no need to have a 64 bit guest operating sytem installed the error appears before even try to boot the guest, at the very first stage of starting the 64 bit guest. Of course host is Windows 11 Home (64 Bits) with no Hyper-V on Apps&characteristics, i had also tried with bcdedit, dism, etc…

Try to start any 64 Bit guest -> ERROR “… host CPU does NOT support HW virtualization” Start 64 Bit guest -> Boots OK, no error at allĨ. I had also tested this steps in a loop (with such same results):ĥ. Just after installing 6.1.32 or 6.1.34 (without reboot host after install) i have no problem, any 64Bit guess (with & without gues OS installed) runs well.īut after host reboot on 6.1.32 and on 6.1.34 i any 64Bit guess (with & without gues OS installed) refuses to start with error: “WARNING! 64-bit guest type selected but the host CPU does NOT support HW virtualization.” On 6.1.30 i have no problem, any 64Bit guess (with & without gues OS installed) runs well. My problem is weird, and looks like a VirtualBOX BUG. Right Click on command prompt to and open command prompt as administrator. Go to windows search box and type cmd in search box.Ģ. Fix 3 – Running command in Command promptġ. Then, start the VM Virtual Box and start a new virtual session. dism.exe /Online /Disable-Feature:Microsoft-Hyper-VĬlose the Command Prompt window. Once the Command Prompt appears on your screen, type or paste this code and hit Enter. After that, right-click on “ Command Prompt” and choose “ Run as administrator“.ĩ. Once the computer starts up, type “ cmd” in the search box.Ĩ.

Now, your computer will restart and Windows will disable the Hyper V on your computer.ħ. Finally, click on “ Restart now” to restart the system. Windows will now start the process of disabling the HyperVisor on your computer.Ħ. Now, again Open this window, and disable (Uncheck) all features of Hyper-V. When the Optional Features opens up, just check the “ Hyper-V” option to enable all the features of Hyper V.

Oracle vm virtualbox windows 11