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Virtual Box Error - VT-x features locked or unavailable in MSR.

Error:

Failed to open a session for the virtual machine

VT-x features locked or unavailable in MSR.
(VERR_VMX_MSR_LOCKED_OR_DISABLED)

The details are:

Result Code:
E_FAIL (0×80004005)
Component:
Console
Interface:
IConsole {1968b7d3-e3bf-4ceb-99e0-cb7c913317bb}



Solution:

You have to change the processor Number to get rid of this error.

So go to vitual-Box Machine–>setting–>system–>Processor–> change the CPU No. to 1.
Then restart the VM and it'll work.

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