SCVMM error : 23351 : The input string “” for the FirstBootDevice parameter cannot be parsed and may be invalid.

After importing an exported Generation 2 template in VMM, the following error occurs when trying to deploy :
The input string “” for the FirstBootDevice parameter cannot be parsed and may be invalid.
Make sure the string uses one of the following formats: “SCSI,BusId(integer),LunId(integer)” or “NIC,SlotId(integer)”
ID: 23351

This can be fixed up in Powershell like this :

Import-Module virtualmachinemanager
Get-SCVMTemplate -Name 'TEMPLATEXXX'  | Set-SCVMTemplate -FirstBootDevice 'SCSI,0,0'

1 thought on “SCVMM error : 23351 : The input string “” for the FirstBootDevice parameter cannot be parsed and may be invalid.”

  1. Great article. Thanks! Saved me! Built out 2012 and 2016 Templates, 2016 one worked, didn’t used 2012 until just now and got the error. Quick fix thanks to this.

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