Turning hyper-v on and off

I use hyper-v on my laptop. When I know I don't need VMs for the day, I can squeeze a bit more performance out of the machine by turning hyper-v off with:

bcdedit /set hypervisorlaunchtype off

and a reboot. To turn it back on:

bcdedit /set hypervisorlaunchtype on (or auto start)

and reboot.

Comments

• Anonymous
  January 01, 2003
  hello

• Anonymous
  January 01, 2003
  Run Cmdr as administrator

• Anonymous
  April 18, 2011
  I receive the message:  an error occurred while attempting to reference the specified entry.  I did this from the command prompt installation disk.  Thanks

• Anonymous
  April 10, 2014
  Would this work on Windows 8 or Windows 8.1? And do I need to use cmd?

• Anonymous
  May 22, 2014
  Great! Thank you, that saved my life hehe =]

• Anonymous
  June 18, 2014
  and where does the bcdedt/set hypervisorlaunchtype get switched on?

• Anonymous
  September 10, 2014
  thanks just use bcdedit /set hypervisorlaunchtype auto start for it to turn back on
  

• Anonymous
  June 03, 2015
  here is different way to disable Hyper-V: http://druss.co/2015/06/fix-vt-x-is-not-available-verr_vmx_no_vmx-in-virtualbox/

• Anonymous
  July 23, 2015
  thanks. That would be cool. to keep both!.
  
  I assume that normally this would work... however...
  
  
  The boot configuration data store could not be opened.
  The system cannot find the file specified.
  
  Note that this is a dual-boot grub2 based linux/windows setup.
  
  
  Roeland
  
  

• Anonymous
  August 21, 2015
  poop

• Anonymous
  December 18, 2015
  Command/Parameter to turn it back would be
  bcdedit /set hypervisorlaunchtype Auto
  
  Ref: https://msdn.microsoft.com/en-us/library/windows/hardware/ff542202(v=vs.85).aspx