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[Solved] virtualbox runs slow
Posted: 11. Jan 2022, 02:08
by winxpto10
Recently I upgraded from Windows 10 version 1809 to Windows 10 version 21H2, the virtualbox runs slow. I did clean install Windows 10 version 21H2 still virtualbox runs slow with latest windows updates installed and latest version all drivers installed. I am using latest version virtualbox
Re: virtualbox runs slow
Posted: 11. Jan 2022, 02:15
by scottgus1
Start the VM from full normal shutdown, not save-state. Run until you see the problem happen, then shut down the VM from within the VM's OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.
Right-click the VM in the main Virtualbox window's VM list, choose Show Log. Save the far left tab's log, zip it, and post the zip file, using the forum's Upload Attachment tab.
Re: virtualbox runs slow
Posted: 11. Jan 2022, 02:24
by winxpto10
Here it is
Re: virtualbox runs slow
Posted: 11. Jan 2022, 03:43
by BillG
It seems that you have somehow enabled Hyper-V on the host.
Code: Select all
00:00:03.177328 ********************* End of CFGM dump **********************
00:00:03.177386 HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
00:00:03.229697 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...
See this post.
viewtopic.php?t=99390
Re: virtualbox runs slow
Posted: 11. Jan 2022, 03:50
by winxpto10
How do i disable Hyper-V on the host?
Re: virtualbox runs slow
Posted: 11. Jan 2022, 04:13
by scottgus1
winxpto10 wrote:How do i disable Hyper-V on the host?
By reading BillG's post fully. There's a link to click on.
Re: virtualbox runs slow
Posted: 11. Jan 2022, 04:23
by winxpto10
Ok, i did enter bcdedit /set hypervisorlaunchtype off in command prompt as administrator and successfully, i do not need to enter DISM /Online /Disable-Feature:Microsoft-Hyper-V in command prompt as administrator is that correct?
Re: virtualbox runs slow
Posted: 11. Jan 2022, 06:24
by BillG
That will be fine as long as your reboot at least once after you enter the hypervisorlaunchtype command. if the hypervisor does not load, any programs which depend on it cannot run, even if they are enabled. It is a killswitch for Hyper-V, if you like to think of it that way.
Re: virtualbox runs slow
Posted: 11. Jan 2022, 06:37
by winxpto10
problem solved thank you so much now virtualbox runs fast