Windows – Enabling Intel virtualization support in BIOS makes the VMware VMs unusable


I had the bright idea to install Windows XP Mode in order to try to solve this problem from yesterday. It seemed to work nicely, but as part of the new Virtual PC and Windows XP Mode installation, I had to enable the Intel virtualization support in my BIOS. With it enabled, I could use XP Mode just fine. However, when I tried to start my VMware VMs which existed prior to my installation of XP Mode, the VMware VMs failed to start. Instead, VMware Workstation (6.5.2) gave me a discouraging error message. This message is from the log file, but the UI gave this in a messagebox also:

Msg_Post: Error
Oct 01 08:39:12.852: vcpu-0| [msg.log.error.unrecoverable] VMware Workstation unrecoverable error: (vcpu-0)
Oct 01 08:39:12.852: vcpu-0| VCPU 0 RunVM failed: -2.
Oct 01 08:39:12.852: vcpu-0| [msg.panic.haveLog] A log file is available in "D:\Virtual Machines\Win 2003 R2 Standard -- MOSS\vmware.log".  [msg.panic.haveCore] A core file is available in "D:\Virtual Machines\Win 2003 R2 Standard -- MOSS\vmware-vmx-4128.dmp".  [msg.panic.requestSupport.withLogAndCore] Please request support and include the contents of the log file and core file.  [msg.panic.requestSupport.vmSupport.windowsOrLinux] 
Oct 01 08:39:12.852: vcpu-0| To collect data to submit to VMware support, select Help > About and click "Collect Support Data". You can also run the "vm-support" script in the Workstation folder directly.
Oct 01 08:39:12.852: vcpu-0| [msg.panic.response] We will respond on the basis of your support entitlement.

This error message seems to be reversible. I can turn on hardware virtualization and get the error. I can turn off hardware virtualization and get the VM to boot up just fine. Rinse, repeat. If this is just a coincidence, it's a strange one.

So, is there any way I can get my VMware VM to run correctly with the BIOS virtualization switch turned on? I'd really like to be able to use both VMware and XP Mode, if possible.

Best Answer

You can have both and also make use of VT-x but you can't run them both at the same time.

Take a look here:

The post above corresponds with my findings.