ESXi: Cannot start VM. Invalid MAC address specified. 12:34:6:78:90:12 is not an allowed static Ethernet address

Hi,

VMware vSphere does only allow to set MAC Addresses from the Range 00:50:56:00:00:00 up to 00:50:56:3f:ff:ff. You can set a static MAC out of this range but cannot start the virtual machine. The typical error message is:

Invalid MAC address specified. 12:34:6:78:90:12 is not an allowed static Ethernet address. It conflicts with VMware reserved MACs.
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VMware vSphere: Cannot register a virtual machine in inventory: A virtual machine or template having the same name is already registered

Hi,

a customer had the problem that a virtual machine is shown as invalid or orphaned. After removing from inventory (not from disk) he couldn’t register the vm again: “A virtual machine or template having the same name is already registered”

This could have multiple causes:
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VMware: Generate an URL for a VM Console Session

Hi,

with PowerCli it is simply possible to generate an direct Link to accessing a VM’s Console without clicking through the whole vSphere Tree.

The anatomy of the URL is
https://%vCenterFQDN%:9443/vsphere-client/vmrc/vmrc.jsp?vm=urn:vmomi:VirtualMachine:%MoRef%:%vCenterUUID%
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Hyper-V: Convert a VMware Virtual Machine files to Hyper-V

Hi,

this post describes how to convert VMware vmdk files to Hyper-V’s vhdx format.

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VMware: Execute scripts by Invoke-VMScript as Administrator

Hi,

this post addresses the issue that, when Windows UAC is enabled, you could not execute scripts with elevated Administrator permissions by PowerCli’s Invoke-VMScript. In my opinion when I execute scripts on VMs in more then 80% of these cases I need elevated user rights.
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