Problem on windows 2008 server 64 Bits

[lalotijuas]

Hi this is my first time using VBox, I just installed VBox on a windows 2008 server 64 bits.

I tried to install a guest OS also windows 2008 server 64 bits, but when trying to startup for installing the OS, I get the following error:

00:00:02.501 ********************* End of statistics **********************
00:00:02.506 VMSetError: D:\tinderbox\win-3.1\src\VBox\VMM\VM.cpp(323) VMR3Create
00:00:02.506 VMSetError: Unknown error creating VM
00:00:02.507 ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={6375231a-c17c-464b-92cb-ae9e128d71c3} aComponent={Console} aText={Unknown error creating VM (VERR_VMX_MSR_LOCKED_OR_DISABLED)} aWarning=false, preserve=false
00:00:02.526 Power up failed (vrc=VERR_VMX_MSR_LOCKED_OR_DISABLED, rc=E_FAIL (0X80004005))

Thanks for your help

[dmcgraw]

It is telling you that VT-x/AMD-v is not available. To run a 64-bit guest, your CPU, motherboard and BIOS must all support VT-x/AMD-v and it must be enable in the BIOS.

[Perryg]

Also make sure that you are not running hyper-v on the host as this will cause the same error.

[lalotijuas]

I Tried to install windows 2003 server, but got the same error.
I enabled the "virtualization" option in the BIOS and that solved the problem for the installation of both, windows 2008 server 64 bits, and windows 2003 server.
Thanks.