Windows Server 2016 Datacenter shows incorrect display of allocated vCPU(Only showing 4 vcpus)

 Symptoms

• VCPU allocated to the VM is not showing up inside the guest OS.
• The Device manager shows that 28 vcpus's are allocated  but when we view the number of processor's in the task manger it shows only 4 and actual VCPU allocated is more than 4 cpus(ex. 28 cpu's)
• Even with reboot of the VM issue persists.

Cause

From BCDedit it was discovered that numproc is configured to only 4 CPUs

Resolution

1. Use the command to remove it : bcdedit /deletevalue numproc .
2. Reboo the server.