The error will appear on vSphere Web Client:
"The specified delta disk format 'nativeFormat' is not supported."
Powering on the virtual machine directly on vCenter (without Citrix) will work normally.
vCenter Server Appliance 8.0.x
ESXi hosts 8.0.x
Citrix
Issue is related to third party vendor: Citrix
Contact your Citrix vendor to work on the resolution or workaround.
Possible workaround is to remove / recreate the VM on Citrix.