After all PVS targets are UEFI booted, do you change the boot file name? From C:\ProgramData\Citrix\Provisioning Services\Tftpboot\ARDBP32.BIN to C:\ProgramData\Citrix\Provisioning Services\Tftpboot\PvsNbpX64.efi

Yes! Best practice would be to do both: • DHCP Scope Option 067 = PvsNbpX64.efi • Update PVS Configuration Wizard to PvsNbpX64.efi so it doesn't revert if the wizard is ever re-run We only did DHCP Option 067 and confirmed the file exists at C:\ProgramData\Citrix\Provisioning Services\Tftpboot\PvsNbpX64.efi — happened to work fine for us but probably got lucky!